ZF 8HP transmission

Template:Short description Template:Use American English Template:Use dmy dates Template:Infobox automobile

8HP is ZF Friedrichshafen AG's trademark name for its 8-speed automatic transmission models with hydraulic converter and planetary gearsets for longitudinal engine applications. Designed and first built by ZF's subsidiary in Saarbrücken, Germany, it debuted in 2008 on the BMW 7 Series (F01) 760Li sedan fitted with the V12 engine. BMW remains a major customer for the transmission.

Another major customer is Stellantis, who both received a license to produce the transmission and set up a joint-venture plant with ZF. Stellantis has built the transmission at its Kokomo Transmission plant since 2013 under their own brand name, the Torqueflite 8.^[1]^[2] The joint venture plant in Gray Court, South Carolina opened in 2012.^[3]

The 8HP is the first transmission to use this 8-speed gearset concept. In the meantime it has become the new benchmark for automatic transmissions.

The GM 8L transmission is based on the same globally patented gearset concept. While fully retaining the gearset logic, it differs from this only in the patented^[4] arrangement of the components with gearsets 1 and 3 swapped.^[5]

Gear RatiosTemplate:Efn
Template:Diagonal split header	R	1	2	3	4	5	6	7	8	Total Span	Span Center	Avg. Step	Compo- nents

2008: Pilot Series													4 Gearsets 2 Brakes 3 Clutches
8HP 70	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
2010: 1st Generation
8HP 30/I · 8HP 45	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
8HP 55 · 8HP 70 8HP 65 · 8HP 90	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
2014: 2nd Generation
8HP 75/I	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
8HP 30/II · 8HP 50	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
8HP 75/II · 8HP 95	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
2018: 3rd Generation
8HP 76/I	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
8HP 30/III · 8HP 51	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
8HP 76/II	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
2022: 4th Generation
8HP 100	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
8HP 80	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
2016: Racing Cars
8P 45R	TBD	TBD	TBD	TBD	TBD	TBD	1.000	TBD	TBD	Template:Round	TBD	Template:Round
2017: Commercial Vehicles
8AP 600 T · 8AP 1000 T 8AP 800 T · 8AP 1200 T	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
8AP 1200 S	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round

Template:Notelist

Specifications

2008: Pilot Series

The 8HP 70 transmission with the gearset 4 in 23-85-teeth-configuration was the pilot series and therefore without generation designation. It was first used in the BMW 7 Series (F01) 760Li, has a torque handling limit of Template:Convert, and weighs Template:Convert.^[6]

2010: 1st Generation

In addition to the rear-wheel drive variant, two different four-wheel drive versions were available, with a version destined for Volkswagen Group applications using a Torsen centre differential.^[7] It is able to encompass a torque range from Template:Convert to Template:Convert, and is available for use in middle-class cars through to large luxury sport utility vehicles.^[7]

Since gearset 4 meshes in almost all gears up to and including 5th gear, large gear wheels are advantageous for durability. As the very high ratio 1st gear is formed exclusively by gearset 4, its sun gear is unusually small. For this reason, this gearset was enlarged by over 20 % when the 1st generation was introduced, even if this advantage had to be given up again immediately when the 2nd generation was introduced in order to increase the total span.

2014: 2nd Generation

Efficiency improvements over the pilot design and the first generation include a wider ratio span of 7.81, reduced drag torque from the shift elements, reduction in required oil pump pressure, and broadened use of the coasting and start-stop systems.^[8] ZF estimated fuel economy improvement over first generation to be 3 %. Refinements were also made with respect to vibration.

2018: 3rd Generation

Major improvements are total span of 8.59 and a fuel economy improvement of 2.5 % compared to the second generation. There are several options in maximum torque available, also the gearbox is available with mild hybrid and plug in hybrid options: With Template:Convert and Template:Convert supporting boosting and recuperation in combination with 48 Volt technology up to Template:Convert and Template:Convert for usage with higher voltage.^[9]

2022: 4th Generation

Major improvement is the transition to a versatile modular system that allows vehicle manufacturers to comprehensively and flexibly electrify their models as required. Plug-in Hybrid options with up to Template:Convert and Template:Convert are capable of saving up to 70 % of carbon emissions compared with a purely conventional variant of the 8HP according to the Worldwide Harmonised Light Vehicles Test Procedure (WLTP).^[10] In addition, a modification to gearset 3 increased the reverse gear ratio, making it less disadvantageous. With this gearset concept, the already disadvantageously large step from 7th to 8th gear is further increased, albeit only slightly.

Progress Gearset Concept

Main Objectives

The main objective in replacing the predecessor model was to improve vehicle fuel economy with extra speeds and a wider gear span to allow the engine speed level to be lowered (downspeeding). Compared to the 6-speed ZF 6HP transmission it uses 12 % less fuel, and 14 % less than a 5-speed transmission.^[11]^[12] Due to changes in internal design, the shift times have reduced to 0.2 seconds; additionally, the unit brings the ability to shift in a non-sequential manner – going from gear 8 to gear 2 in extreme situations simply by changing one shift element (actuating brake B and releasing clutch D).^[13]

Extent

In order to increase the number of ratios, ZF has abandoned the conventional design method of limiting themselves to pure in-line epicyclic gearing and extended it to a combination with parallel epicyclic gearing. This was only possible thanks to computer-aided design and has resulted in a globally patented gearset concept. The resulting progress is reflected in a better ratio of the number of gears to the number of components used compared to existing layouts. The 8HP has become the new reference standard (benchmark) for automatic transmissions.

Innovation Strength
With Asessment	Output: Gear Ratios	Innovation Elasticity Template:Efn Δ Output : Δ Input	Input: Main Components
With Asessment	Output: Gear Ratios	Innovation Elasticity Template:Efn Δ Output : Δ Input	Total	Gearsets	Brakes	Clutches

8HP Ref. Object	$n_{O 1}$ $n_{O 2}$	TopicTemplate:Efn	$n_{I} = n_{G} +$ $n_{B} + n_{C}$	$n_{G 1}$ $n_{G 2}$	$n_{B 1}$ $n_{B 2}$	$n_{C 1}$ $n_{C 2}$
Δ Number	$n_{O 1} - n_{O 2}$	TopicTemplate:Efn	$n_{I 1} - n_{I 2}$	$n_{G 1} - n_{G 2}$	$n_{B 1} - n_{B 2}$	$n_{C 1} - n_{C 2}$
Relative Δ	Δ Output $\frac{n_{O 1} - n_{O 2}}{n_{O 2}}$	$\frac{n_{O 1} - n_{O 2}}{n_{O 2}} : \frac{n_{I 1} - n_{I 2}}{n_{I 2}}$ $= \frac{n_{O 1} - n_{O 2}}{n_{O 2}}$ · $\frac{n_{I 2}}{n_{I 1} - n_{I 2}} <$	Δ Input $\frac{n_{I 1} - n_{I 2}}{n_{I 2}}$	$\frac{n_{G 1} - n_{G 2}}{n_{G 2}}$	$\frac{n_{B 1} - n_{B 2}}{n_{B 2}}$	$\frac{n_{C 1} - n_{C 2}}{n_{C 2}}$

8HP 6HP Template:Efn	8Template:Efn 6Template:Efn	ProgressTemplate:Efn	9 8	4 3Template:Efn	2 2	3 3
Δ Number	2	ProgressTemplate:Efn	1	1	0	0
Relative Δ	Template:Round $\frac{1}{3}$	Template:RoundTemplate:Efn $\frac{1}{3} : \frac{1}{8} = \frac{1}{3}$ · $\frac{8}{1} = \frac{8}{3}$	Template:Round $\frac{1}{8}$	Template:Round $\frac{1}{3}$	Template:Round $\frac{0}{2}$	Template:Round $\frac{0}{3}$

8HP 3-SpeedTemplate:Efn	8Template:Efn 3Template:Efn	Market PositionTemplate:Efn	9 7	4 2	2 3	3 2
Δ Number	5	Market PositionTemplate:Efn	2	2	-1	1
Relative Δ	Template:Round $\frac{5}{3}$	Template:RoundTemplate:Efn $\frac{5}{3} : \frac{2}{7} = \frac{5}{3}$ · $\frac{7}{2} = \frac{35}{6}$	Template:Round $\frac{2}{7}$	Template:Round $\frac{1}{1}$	Template:Round $\frac{- 1}{3}$	Template:Round $\frac{1}{2}$

Template:Notelist

Quality Gearset Concept

The ratios of the 8 gears are relatively unevenly distributed in all versions. Particularly noticeable are the too small step between 3rd and 4th gear and the too large one between 7th and 8th gear. This cannot be eliminated without affecting all other gear ratios. On the other hand the selected gearset concept offers 2 to 3 gears more than conventional transmissions of comparable manufacturing costs, which more than compensates for the weaknesses.

Gear Ratio Analysis
With Assessment			Planetary Gearset: TeethTemplate:Efn				Count	TotalTemplate:Efn CenterTemplate:Efn	Avg.Template:Efn

Model Type	Version		S₁Template:Efn R₁Template:Efn	S₂Template:Efn R₂Template:Efn	S₃Template:Efn R₃Template:Efn	S₄Template:Efn R₄Template:Efn	Brakes Clutches	Ratio Span	Gear StepTemplate:Efn
Gear Ratio	R $i_{R}$	1 $i_{1}$	2 $i_{2}$	3 $i_{3}$	4 $i_{4}$	5 $i_{5}$	6 $i_{6}$	7 $i_{7}$	8 $i_{8}$
StepTemplate:Efn	$- \frac{i_{R}}{i_{1}}$ Template:Efn	$\frac{i_{1}}{i_{1}}$	$\frac{i_{1}}{i_{2}}$ Template:Efn	$\frac{i_{2}}{i_{3}}$	$\frac{i_{3}}{i_{4}}$	$\frac{i_{4}}{i_{5}}$	$\frac{i_{5}}{i_{6}}$	$\frac{i_{6}}{i_{7}}$	$\frac{i_{7}}{i_{8}}$
Δ StepTemplate:Efn Template:Efn			$\frac{i_{1}}{i_{2}} : \frac{i_{2}}{i_{3}}$	$\frac{i_{2}}{i_{3}} : \frac{i_{3}}{i_{4}}$	$\frac{i_{3}}{i_{4}} : \frac{i_{4}}{i_{5}}$	$\frac{i_{4}}{i_{5}} : \frac{i_{5}}{i_{6}}$	$\frac{i_{5}}{i_{6}} : \frac{i_{6}}{i_{7}}$	$\frac{i_{6}}{i_{7}} : \frac{i_{7}}{i_{8}}$
Shaft Speed	$\frac{i_{1}}{i_{R}}$	$\frac{i_{1}}{i_{1}}$	$\frac{i_{1}}{i_{2}}$	$\frac{i_{1}}{i_{3}}$	$\frac{i_{1}}{i_{4}}$	$\frac{i_{1}}{i_{5}}$	$\frac{i_{1}}{i_{6}}$	$\frac{i_{1}}{i_{7}}$	$\frac{i_{1}}{i_{8}}$
Δ Shaft SpeedTemplate:Efn	$0 - \frac{i_{1}}{i_{R}}$	$\frac{i_{1}}{i_{1}} - 0$	$\frac{i_{1}}{i_{2}} - \frac{i_{1}}{i_{1}}$	$\frac{i_{1}}{i_{3}} - \frac{i_{1}}{i_{2}}$	$\frac{i_{1}}{i_{4}} - \frac{i_{1}}{i_{3}}$	$\frac{i_{1}}{i_{5}} - \frac{i_{1}}{i_{4}}$	$\frac{i_{1}}{i_{6}} - \frac{i_{1}}{i_{5}}$	$\frac{i_{1}}{i_{7}} - \frac{i_{1}}{i_{6}}$	$\frac{i_{1}}{i_{8}} - \frac{i_{1}}{i_{7}}$

2008: Pilot Series
8HP 70Template:Efn	Template:Convert		48^[14] 96	48^[14] 96	69^[5] 111	23^[5] 85	2 3	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color	Template:Round $\frac{108}{23}$	Template:Font color	Template:Round $\frac{162}{77}$	Template:Font color	Template:Font color	Template:Round $\frac{1}{1}$	Template:Font color	Template:Round $\frac{2}{3}$
Step	Template:Font color Template:Efn	1.0000	Template:Font color	1.4879	Template:Font color Template:Efn	Template:Font color	1.2845	Template:Font color	1.2587
Δ StepTemplate:Efn			Template:Font color Template:Efn	1.1787	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0779	Template:Font color Template:Efn
Speed	Template:Font color	1.0000	1.5000	2.2319	Template:Font color	3.6555	4.6957	Template:Font color	7.0435
Δ Speed	Template:Font color	1.0000	0.5000	0.7319	Template:Font color Template:Efn	0.8382	1.0401	Template:Font color Template:Efn	1.4478
2010: 1st Generation
HP 30/I 8HP 45	Template:Convert Template:Convert		48 96	48 96	60 96	28 104	2 3	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color	Template:Round $\frac{33}{7}$	Template:Font color	Template:Round $\frac{99}{47}$	Template:Font color	Template:Font color	Template:Round $\frac{1}{1}$	Template:Font color	Template:Round $\frac{2}{3}$
Step	Template:Font color Template:Efn	1.0000	Template:Font color	1.4921	Template:Font color Template:Efn	Template:Font color	1.2854	Template:Font color	1.2581
Δ StepTemplate:Efn			Template:Font color Template:Efn	1.1805	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0781	Template:Font color Template:Efn
Speed	Template:Font color	1.0000	1.5000	2.2381	Template:Font color	3.6576	4.7143	Template:Font color	7.0714
Δ Speed	Template:Font color	1.0000	0.5000	0.7381	Template:Font color Template:Efn	0.8390	1.0467	Template:Font color Template:Efn	1.45058

8HP 55 8HP 65 8HP 70 8HP 90	Template:Convert Template:Convert Template:Convert Template:Convert		48 ^[14]^[15] 96	48 ^[14]^[15] 96	69 111	28 104	2 3	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color	Template:Round $\frac{33}{7}$	Template:Font color	Template:Round $\frac{99}{47}$	Template:Font color	Template:Font color	Template:Round $\frac{1}{1}$	Template:Font color	Template:Round $\frac{2}{3}$
Step	Template:Font color Template:Efn	1.0000	Template:Font color	1.4921	Template:Font color Template:Efn	Template:Font color	1.2847	Template:Font color	1.2587
Δ StepTemplate:Efn			Template:Font color Template:Efn	1.1806	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0781	Template:Font color Template:Efn
Speed	Template:Font color	1.0000	1.5000	2.2381	Template:Font color	3.6696	4.7143	Template:Font color	7.0714
Δ Speed	Template:Font color	1.0000	0.5000	0.7381	Template:Font color Template:Efn	0.8410	1.0447	Template:Font color Template:Efn	1.4536
2014: 2nd Generation
8HP 75/I^[16]	Template:Convert		48 96	48 96	69 111	28 104	2 3	Template:Round Template:Round	Template:Font color Template:Efn
Ratio	Template:Font color Template:Efn	Template:Round	Template:Font color Template:Efn	Template:Round	Template:Font color Template:Efn Template:Efn Template:Efn	Template:Font color Template:Efn	Template:Round	Template:Font color Template:Efn Template:Efn	Template:Round

8HP 30/II^[16] 8HP 50^[16]	Template:Convert Template:Convert		48 96	54 96	60 96	24 96	2 3	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color	Template:Round $\frac{5}{1}$	Template:Font color	Template:Round $\frac{15}{7}$	Template:Font color	Template:Font color Template:Efn $\frac{1, 507}{1, 147}$	Template:Round $\frac{1}{1}$	Template:Font color	Template:Round $\frac{16}{25}$
Step	Template:Font color Template:Efn	1.0000	Template:Font color	1.4933	Template:Font color Template:Efn	Template:Font color	1.3139	Template:Font color	1.2846
Δ StepTemplate:Efn			Template:Font color Template:Efn	1.1986	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0802	Template:Font color Template:Efn
Speed	Template:Font color	1.0000	1.5625	2.3333	Template:Font color	3.8056	5.0000	Template:Font color	7.8125
Δ Speed	Template:Font color	1.0000	0.5625	0.7708	Template:Font color Template:Efn	0.8986	1.1944	Template:Font color Template:Efn	1.7308

8HP 75/II^[16] 8HP 95Template:Efn	Template:Convert Template:Convert		48 96	54 96	69 111	24 96	2 3	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color	Template:Round $\frac{5}{1}$	Template:Font color	Template:Round $\frac{15}{7}$	Template:Font color	Template:Font color Template:Efn $\frac{2, 315}{1, 763}$	Template:Round $\frac{1}{1}$	Template:Font color	Template:Round $\frac{16}{25}$
Step	Template:Font color Template:Efn	1.0000	Template:Font color	1.4933	Template:Font color Template:Efn	Template:Font color	1.3131	Template:Font color	1.2853
Δ StepTemplate:Efn			Template:Font color Template:Efn	1.1986	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0802	Template:Font color Template:Efn
Speed	Template:Font color	1.0000	1.5625	2.3333	Template:Font color	3.8078	5.0000	Template:Font color	7.8125
Δ Speed	Template:Font color	1.0000	0.5625	0.7708	Template:Font color Template:Efn	0.9008	1.1922	Template:Font color Template:Efn	1.7344
2018: 3rd Generation
8HP 76/ITemplate:Efn	Template:Convert		48 96	54 96	69 111	24 96	2 3	Template:Round Template:Round	Template:Font color Template:Efn
Ratio	Template:Font color Template:Efn	Template:Round	Template:Font color Template:Efn	Template:Round	Template:Font color Template:Efn Template:Efn Template:Efn	Template:Font color Template:Efn	Template:Round	Template:Font color Template:Efn Template:Efn	Template:Round

8HP 30/IIITemplate:Efn 8HP 51Template:Efn	Template:Convert Template:Convert		48 96	54 96	60 96	24 102	2 3	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color	Template:Round $\frac{21}{4}$	Template:Font color	Template:Round $\frac{63}{29}$	Template:Font color	Template:Font color	Template:Round $\frac{1}{1}$	Template:Font color	Template:Round $\frac{16}{25}$
Step	Template:Font color Template:Efn	1.0000	Template:Font color	1.5467	Template:Font color Template:Efn	Template:Font color	1.3161	Template:Font color	1.2846
Δ StepTemplate:Efn			Template:Font color Template:Efn	1.2246	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0820	Template:Font color Template:Efn
Speed	Template:Font color	1.0000	1.5625	2.4167	Template:Font color	3.9892	5.2500	Template:Font color	8.2031
Δ Speed	Template:Font color	1.0000	0.5625	0.8542	Template:Font color Template:Efn	0.9369	1.2608	Template:Font color Template:Efn	1.8173

8HP 76/IITemplate:Efn	Template:Convert		48 96	54 96	69 111	24 108	2 3	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color	Template:Round $\frac{11}{2}$	Template:Font color	Template:Round $\frac{11}{5}$	Template:Font color	Template:Font color	Template:Round $\frac{1}{1}$	Template:Font color	Template:Round $\frac{16}{25}$
Step	Template:Font color Template:Efn	1.0000	Template:Font color	1.6000	Template:Font color Template:Efn	Template:Font color	1.3172	Template:Font color	1.2853
Δ StepTemplate:Efn			Template:Font color Template:Efn	1.2509	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0836	Template:Font color Template:Efn
Speed	Template:Font color	1.0000	1.5625	2.5000	Template:Font color	4.1754	5.5000	Template:Font color	8.5938
Δ Speed	Template:Font color	1.0000	0.5625	0.9375	Template:Font color Template:Efn	0.9777	1.3246	Template:Font color Template:Efn	1.8321
2022: 4th Generation
8HP 100Template:Efn	Template:Convert ^[10]		48 96	54 96	60 108	24 96	2 3	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color	Template:Round $\frac{5}{1}$	Template:Font color	Template:Round $\frac{15}{7}$	Template:Font color	Template:Font color Template:Efn $\frac{1, 571}{1, 211}$	Template:Round $\frac{1}{1}$	Template:Font color	Template:Round $\frac{16}{25}$
Step	Template:Font color Template:Efn	1.0000	Template:Font color	1.4933	Template:Font color Template:Efn	Template:Font color	1.2973	Template:Font color	1.3011
Δ StepTemplate:Efn			Template:Font color Template:Efn	1.1986	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0803	Template:Font color Template:Efn
Speed	Template:Font color	1.0000	1.5625	2.3333	Template:Font color	3.8542	5.0000	Template:Font color	7.8125
Δ Speed	Template:Font color	1.0000	0.5625	0.7708	Template:Font color Template:Efn	0.9473	1.1458	Template:Font color Template:Efn	1.8080

8HP 80Template:Efn	Template:Convert ^[10]		48 96	54 96	60 108	24 108	2 3	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color	Template:Round $\frac{11}{2}$	Template:Font color	Template:Round $\frac{11}{5}$	Template:Font color	Template:Font color	Template:Round $\frac{1}{1}$	Template:Font color	Template:Round $\frac{16}{25}$
Step	Template:Font color Template:Efn	1.0000	Template:Font color	1.6000	Template:Font color Template:Efn	Template:Font color	1.3010	Template:Font color	1.3011
Δ StepTemplate:Efn			Template:Font color Template:Efn	1.2509	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0834	Template:Font color Template:Efn
Speed	Template:Font color	1.0000	1.5625	2.5000	Template:Font color	4.2275	5.5000	Template:Font color	8.5938
Δ Speed	Template:Font color	1.0000	0.5625	0.9375	Template:Font color Template:Efn	1.0298	1.2725	Template:Font color Template:Efn	1.9888
2016: Racing Cars
8P 45RTemplate:Efn	Template:Convert up to Template:Convert^[17]		TBD	TBD	60 96	TBD	2 3	Template:Round TBD	Template:Round Template:Efn
Ratio	TBD	TBD	TBD	TBD	TBD	TBD	1.0000	TBD	TBD
2017: Commercial VehiclesTemplate:Efn
8AP 600 TTemplate:Efn 8AP 800 T 8AP 1000 T 8AP 1200 T	Template:Convert Template:Convert Template:Convert Template:Convert Template:Efn		65Template:Efn 115	65Template:Efn 115	62 122	27 105	2 3	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color	Template:Round $\frac{44}{9}$	Template:Font color	Template:Round $\frac{1, 584}{779}$	Template:Font color	Template:Font color	Template:Round $\frac{1}{1}$	Template:Font color	Template:Round $\frac{23}{36}$
Step	Template:Font color Template:Efn	1.0000	Template:Font color	1.5361	Template:Font color Template:Efn	Template:Font color	1.2541	Template:Font color	1.3148
Δ StepTemplate:Efn			Template:Font color Template:Efn	1.2381	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0535	Template:Font color Template:Efn
Speed	Template:Font color	1.0000	1.5652	2.4043	Template:Font color	3.8983	4.8889	Template:Font color	7.6522
Δ Speed	Template:Font color	1.0000	0.5652	0.8391	Template:Font color Template:Efn	0.9153	0.9906	Template:Font color Template:Efn	1.8322

8AP 1200 S Template:Efn	Template:Convert Template:Efn		65Template:Efn 115	65Template:Efn 115	65Template:Efn 115	27 105	2 3	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color	Template:Round $\frac{44}{9}$	Template:Font color	Template:Round $\frac{1, 584}{779}$	Template:Font color	Template:Font color	Template:Round $\frac{1}{1}$	Template:Font color	Template:Round $\frac{23}{36}$
Step	Template:Font color Template:Efn	1.0000	Template:Font color	1.5361	Template:Font color Template:Efn	Template:Font color	1.2676	Template:Font color	1.2999
Δ StepTemplate:Efn			Template:Font color Template:Efn	1.2381	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0527	Template:Font color Template:Efn
Speed	Template:Font color	1.0000	1.5652	2.4043	Template:Font color	3.8568	4.8889	Template:Font color	7.6522
Δ Speed	Template:Font color	1.0000	0.5652	0.8391	Template:Font color Template:Efn	0.8738	1.0321	Template:Font color Template:Efn	1.7654

Ratio R & Even	$i_{R} = \frac{R_{2} (S_{3} S_{4} - R_{3} R_{4})}{S_{3} S_{4} (S_{2} + R_{2})}$		$i_{2} = \frac{R_{2} (S_{4} + R_{4})}{(S_{2} + R_{2}) S_{4}}$		$i_{4} = 1 + \frac{S_{2} R_{1}}{S_{1} (S_{2} + R_{2})}$		$i_{6} = \frac{1}{1}$	$i_{8} = \frac{R_{2}}{S_{2} + R_{2}}$
Ratio Odd	$i_{1} = \frac{S_{4} + R_{4}}{S_{4}}$		$\frac{(S_{1} + R_{1}) (S_{4} + R_{4})}{S_{4} R_{1} + S_{1} (S_{4} + R_{4})}$		$\frac{S_{1} R_{2} R_{4} (S_{3} + R_{3}) + S_{2} S_{3} (S_{1} + R_{1}) (S_{4} + R_{4})}{S_{1} R_{4} (S_{3} (S_{2} + R_{2}) + R_{2} R_{3}) + S_{2} S_{3} S_{4} (S_{1} + R_{1})}$			$\frac{R_{2} (S_{3} + R_{3})}{R_{2} (S_{3} + R_{3}) + S_{2} S_{3}}$
Algebra And Actuated Shift ElementsTemplate:Efn
Brake ATemplate:Efn	❶	❶	❶					❶	❶
Brake BTemplate:Efn	❶	❶	❶	❶	❶	❶
Clutch CTemplate:Efn		❶		❶		❶	❶	❶
Clutch DTemplate:Efn	❶				❶	❶	❶	❶	❶
Clutch ETemplate:Efn			❶	❶	❶		❶		❶

Template:Notelist

Applications

Variants And Applications
Model	Max. torque petrol	Max. torque diesel	Car ModelTemplate:Efn

2008: Pilot Series (8HP 70 only) · 2010: 1st Generation
8HP 45	Template:Convert	Template:Convert	BMW 1 Series (F20) BMW X1 (E84) BMW 2 Series (F22) M235i BMW 3 Series (F30) BMW 4 Series (F32) BMW 5 Series (F10/F11)	BMW 6 Series (F06/F12/F13) BMW 7 Series (F01/F02) BMW X3 (F25) BMW X4 (F26) BMW X5 (E70) 35i BMW X5 (F15) BMW X6 (F16)	BMW Z4 (E89) Jaguar XE Jaguar XF (X250) (2013–2015) Jaguar XJ (2013–) Lancia Thema V6 Land Rover Range Rover (L322) (2011–2012)	Land Rover Range Rover (L405) (2012–) Land Rover Range Rover Velar I4 (2017–)
Torqueflite 845RE^[18]	Template:Convert	Template:Convert	Chrysler 300 3.6 L Pentastar V6 (2011–2023)^[19] Chrysler 300 C Dodge Challenger 3.6 L Pentastar V6 (2015–2023)	Dodge Charger 3.6 L Pentastar V6 (2012–2023)^[20] Dodge Durango^[21]^[22] 3.6 L Pentastar V6 (2014–2017)	Jeep Grand Cherokee (WK2) 3.6 L Pentastar V6 (2014–2016)	Ram 1500 3.6 L Pentastar V6^[23]^[24]^[25] (2012–2019)
8HP 55	Template:Convert	Template:Convert	Audi A4 North American (US) B8/8.5 Quattro Versions^[26] (2011–)	Audi A5 North American (US) B8/8.5 Quattro Versions (2011–)	Audi A6 (C7) Audi A7 (C7) Audi A6 Hybrid (C7)	Audi S4 (B9) Audi S5 (B9)
8HP 65	Template:Convert	Template:Convert	Audi A4 (B9)	Audi A6 Hybrid (C7 PHEV) PR China^[27]	Audi A6 (C8) Audi A7 (C8) Audi Q7 (4M) Audi Q8	Audi A8 (D4) Audi A8 (D5) Audi S6 (C8) Porsche Cayenne (2018-) Volkswagen Touareg (2018-)
8HP 70 Pilot & 1st	Template:Convert	Template:Convert	Alpina B3 (F30/F31) Alpina D3 (F30/F31) Alpina B3 (G20/G21) Alpina D3 (G20/G21) Alpina B4 (F32/F33) Alpina D4 (F32/F33) Alpina XD4 Aston Martin Rapide S 2014–2020^[28] Aston Martin Vanquish 2015–2018 Audi Q5 8AT version Audi Q7 (2011–2015) BMW 3 Series (F30) 330d & 335d BMW 4 Series (F32) 430d & 435d BMW 5 Series (F10/F11) BMW 7 Series (F01/F02) BMW X5 (E70) 50i Chrysler 300 5.7 L HEMI V8 (2015–2023) Dodge Challenger 5.7 L HEMI V8 (2015–2023)	Dodge Charger 5.7 L HEMI V8 (2015–2023) Dodge Charger 6.4 L HEMI V8 Dodge Durango^[21]^[22] 5.7 L HEMI V8 Dodge Durango^[21]^[22] 6.4 L HEMI V8 Haval H9 (2017–) Iveco Daily (2014–)^[29] Jaguar F-Type V6 & V8 Jaguar XE 35t Jaguar XF (X250) (2013–2015) Jaguar XJ (2013–) Jeep Grand Cherokee (WK2) 5.7 L HEMI V8 Engine Code [T] EZH & 6.4 L HEMI V8 Engine Code [J] ESG (2014–) Jeep Grand Cherokee (WK2) 3.0 L EcoDiesel V6 (2014–2016)	Jeep Grand Cherokee WL & L 5.7 L HEMI V8 (2021–) Land Rover Discovery LR4 (2009–2016) Land Rover Range Rover Sport L320 SDV6 only (2012–2013) Land Rover Range Rover (L322) TDV8 only (2011–2012) Land Rover Range Rover (L405) (2012–) Land Rover Range Rover Sport L494 (2012–) Land Rover Range Rover Velar V6 & V8 (2017–) MAN TGE (longitudinal engine only) (2017–) Maserati Ghibli (M157) Maserati Grecale Maserati Levante	Maserati Quattroporte^[30] (2013–) Morgan Plus Six Porsche Panamera Diesel & Hybrid models only (2009–2016) Porsche Cayenne (2011–2018) Ram 1500 5.7 L HEMI V8^[23]^[24]^[25] (2012–2019) Ram 1500 3.0 L EcoDiesel V6^[23]^[24]^[25] (2013–2019) Rolls-Royce Phantom VII Rolls-Royce Phantom VIII Volkswagen Touareg (2011–2018) Volkswagen Amarok (2012–2020) Volkswagen Crafter SY/SZ (longitudinal engine only) (2017–)
8HP 90	Template:Convert	Template:Convert	Audi Q7 V8 TDI only (2011–2015) Audi A8 (D4) Audi RS6 (C7) Bentley Mulsanne (2010) Bentley Continental GT 2nd gen. (2011–2018)	BMW 760i/Li (F01/F02)^[27] Dodge Challenger SRT Hellcat 6.2 L HEMI V8 Supercharged	Dodge Charger SRT Hellcat 6.2 L HEMI V8 Supercharged Porsche Cayenne (2011–2018) Turbo models and V8 Diesel only Rolls-Royce Ghost^[31]	Rolls-Royce Wraith (2013) Volkswagen Touareg V8 TDI only (2011–2018)
2014: 2nd Generation
8HP 50	Template:Convert	Template:Convert	Alfa Romeo Giulia Alfa Romeo Stelvio BMW 1 Series (F20) LCI BMW X1 (E84) BMW 2 Series (F22) M240i BMW 3 Series (F30) LCI	BMW 4 Series (F32) LCI BMW 5 Series (F10//F11) BMW 5 Series (G30/G31) BMW 7 Series (G11/G12) BMW X3 20D (G01) BMW X3 30i (G01) BMW X3 M40i (G01)	BMW X4 20D (G02) BMW X4 30i (G02) BMW X4 M40i (G02) BMW X7 Jaguar F-Pace (2016–) Jaguar XF (X260) (2016–) Jaguar XJ (–2019)	Land Rover Defender (L663) (2019–) Land Rover Range Rover (L405) (–2022) Land Rover Range Rover (L460) (2022–) Maserati Grecale Hongqi H9 V6 (2024–)
Torqueflite 850RE^[32]	Template:Convert	Template:Convert	Dodge Charger Pursuit V6 (2021–2023) Dodge Durango^[21]^[22] 3.6 L Pentastar V6 (2017–)	Jeep Gladiator (JT) 3.6 L Pentastar V6 (2019–) Jeep Grand Cherokee (WK2) 3.6 L Pentastar V6 (2017–2021) Jeep Grand Cherokee WL & L 2.0 L I4 (2021–)	Jeep Grand Cherokee WL & L 3.6 L Pentastar V6 (2021–) Jeep Wrangler/Unlimited (JL) 2.0 L I4 Hurricane Turbocharged (2017–)	Jeep Wrangler/Unlimited (JL) 3.6 L Pentastar V6 (2017–) Ram 1500 (DT) 3.6 L Pentastar V6 (2019–)
8HP 75	Template:Convert ^[33]	Template:Convert ^[33]	Alfa Romeo Giulia Quadrifoglio Alfa Romeo Stelvio Quadrifoglio Alpina B5 (G30/G31) Alpina D5 (G30/G31) Alpina B6 (F12) Gran Coupé (2014) Alpina XD3 Alpina XB7 Aston Martin DB11 Aston Martin Vantage (2018) V8	BMW 5 Series (G30/G31) BMW M5 (F90) BMW 7 Series (G11/G12)^[34] BMW X3 30D (G01) BMW X5 (F15)^[35] BMW X5 (F85) M BMW X6 (F86) M BMW X7 Jaguar F-Pace (2016–) Jaguar XF (X260) (2016–) Jaguar XJ (–2019) Jeep Gladiator (JT) 3.0 L EcoDiesel V6 (2020–2023)	Jeep Grand Cherokee (WK2) 3.0 L EcoDiesel V6 (2017–2021) Jeep Wagoneer/Grand Wagoneer (WS) (2021–) Jeep Wrangler 392 (2021–) Jeep Wrangler/Unlimited (JL) 6.4 L HEMI V8 (2021–) Jeep Wrangler/Unlimited (JL) 3.0 L EcoDiesel V6 (2020–2023)	JMC Vigus Land Rover Defender (L663) (2019–) Land Rover Discovery L462 (2017–) Land Rover Range Rover (L405) (–2022) Land Rover Range Rover (L460) (2022–) Ram 1500 (DT) 5.7 L HEMI V8 (2019–) Ram 1500 (DT) 3.0 L EcoDiesel V6 (2019–2023)
8HP 75-LCV	Template:Convert ^[33]	Template:Convert ^[33]	Ram 2500 6.4 L HEMI V8 (2018–)	Ram 3500 6.4 L HEMI V8 (2018–)
8HP 95	Template:Convert	Template:Convert	Aston Martin DBS Superleggera^[28] Audi S8 Audi RS6^[36] Audi RS7^[37] Audi SQ7 \|Audi Q8 Audi RS Q8	Bentley Bentayga Bentley Flying Spur (2013) 2014–2019 BMW M760i/Li^[27] Dodge Durango^[21]^[22] SRT Hellcat 6.2 L HEMI V8 Supercharged	Jeep Grand Cherokee (WK2) SRT Trackhawk 6.2 L HEMI V8 Supercharged Lamborghini Urus Porsche Cayenne Turbo models only (2018-) Ram 1500 (DT) TRX 6.2 L HEMI V8 Supercharged (2020–)	Rolls-Royce Ghost Black Badge Rolls-Royce Wraith (2013) Black Badge Rolls-Royce Dawn Black Badge Rolls-Royce Cullinan Volkswagen Touareg V8 TDI only (2018-)
2018: 3rd Generation
8HP 51	Template:Convert	Template:Convert	BMW 2 Series (G42) BMW 3 Series (G20) BMW 4 Series (G22)	BMW Z4 (G29) BMW X3 M40i (G01)	BMW X4 M40i (G02) Jaguar XE 20d RWD (2019–)	Morgan Plus Four Toyota GR Supra
8HP 76	Template:Convert	Template:Convert	Alpina B7 (G11/12)^[38] Alpina B8 BMW 3 Series (G20/G21) M340dX & 330d & 330dX	BMW 4 Series (G22/G23) M440dX & 430d & 430dX BMW M3 (G80/G81)	BMW M5 (F90) (2020–) BMW M8 (F91/F92/F93)	BMW 730d (G11/G12) LCI BMW 8 Series (G15) BMW X5 (F95) M BMW X7
2022: 4th Generation
8HP 80	Template:Convert	Template:Convert	BMW 7 Series (G70/G73)	BMW X5 (G05) BMW X5 M (F95)	BMW X6 (G06) BMW X6 M (F96)	BMW X7(G07 LCI) Alpina XB7 (G07) Hongqi Guoya
8HP 100	Template:Convert	Template:Convert	BMW XM (G09)	BMW M5 (G90)
1st–3rd Generation
8HP 30	Template:Convert	Template:Convert	BMW 1 Series (F20) 116i	BMW X1 (E84)	CMC Zinger (2023–)
Various
8HP TBD			AEBI MT750 Great Wall Pao (2019–)	Great Wall Tank 300 (2020–)	Haval H8 (2017–2018) Ineos Grenadier	VinFast LUX A2.0 VinFast LUX SA2.0

Template:Notelist

References

Template:Reflist

External links

Template:Official website

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[ram1-23] 23.0 ^23.1 ^23.2 Template:Cite web

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[ram3-25] 25.0 ^25.1 ^25.2 Template:Cite web

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[Aston_Martin-28] 28.0 ^28.1 Template:Cite web

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[8HP75-33] 33.0 ^33.1 8HP 75 Data Sheet · p. 4 · Saarbruecken 2016

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ZF 8HP transmission

Contents

Specifications

2008: Pilot Series

2010: 1st Generation

2014: 2nd Generation

2018: 3rd Generation

2022: 4th Generation

Progress Gearset Concept

Main Objectives

Extent

Quality Gearset Concept

Applications

See also

References

External links

Navigation menu

ZF 8HP transmission

Specifications

2008: Pilot Series

2010: 1st Generation

2014: 2nd Generation

2018: 3rd Generation

2022: 4th Generation

Progress Gearset Concept

Main Objectives

Extent

Quality Gearset Concept

Applications

See also

References

External links

Navigation menu

Search