ZF 6HP transmission

6HP
Automatic Transmission 6HP 26 cutaway
Overview
ManufacturerZF Friedrichshafen
Production2000–2014
Model years2000–2014
Body and chassis
Class6-Speed Longitudinal Automatic Transmission
RelatedFord 6R
GM 6L
Aisin AWTF-80 SC
MB 7G-Tronic
Chronology
PredecessorZF 5HP
SuccessorZF 8HP

6HP is ZF Friedrichshafen AG's trademark name for its 6-speed automatic transmission models (6-speed transmission with Hydraulic converter and Planetary gearsets) for longitudinal engine applications, designed and built by ZF's subsidiary in Saarbrücken. Released as the 6HP 26 in 2000, it was the first 6-speed automatic transmission in a production passenger car. Other variations of the first generation 6HP in addition to the 6HP 26, were 6HP19, and 6HP 32 having lower and higher torque capacity, respectively. In 2007, the second generation of the 6HP series was introduced, with models 6HP 21 and 6HP 28. A 6HP 34 was planned, but never went into production.[1]

The last 6HP automatic transmission was produced by the Saarbrücken plant in March 2014 after 7,050,232 units were produced.[2][3] The ZF plant in Shanghai continued to produce the 6HP for the Chinese market.[2]

Gear Ratios[a]
Gear
Model
R 1 2 3 4 5 6 Total
Span
Span
Center
Avg.
Step
Compo-
nents
2000: 1st Generation 3
Gearsets
2
Brakes
3
Clutches
6HP 26 · 6HP 19 · 6HP 32 −3.403 4.171 2.340 1.521 1.143 0.867 0.691 6.035 1.698 1.433
2007: 2nd Generation
6HP 28 · 6HP 21 · 6HP 34 −3.403 4.171 2.340 1.521 1.143 0.867 0.691 6.035 1.698 1.433
Other Manufacturer
Aisin AWTF-80 SC · 2005 −3.394 4.148 2.370 1.556 1.155 0.859 0.686 6.049 1.687 1.433
Ford 6R 60 · 6R 80 · 2005 −3.403 4.171 2.340 1.521 1.143 0.867 0.691 6.035 1.698 1.433
Ford 6R 140 · 2005 −3.128 3.974 2.318 1.516 1.149 0.858 0.674 5.899 1.636 1.426
GM 6L 45 · 6L 50 · 2006 −3.200 4.065 2.371 1.551 1.157 0.853 0.674 6.035 1.655 1.433
GM 6L 80 · 6L 90 · 2005 −3.064 4.027 2.364 1.532 1.152 0.852 0.667 6.040 1.638 1.433
  1. ^ Differences in gear ratios have a measurable, direct impact on vehicle dynamics, performance, waste emissions as well as fuel mileage
  1. ^ "ZF 6HP34" (PDF). ZF Friedrichshafen AG. Retrieved 18 September 2009.[permanent dead link]
  2. ^ a b "More than Seven Million: ZF Ends Production of Successful 6-Speed Automatic Transmission" (Press release). ZF Friedrichshafen. 31 March 2014. Retrieved 2 August 2016.
  3. ^ "Review: Ford FG X Falcon (2014–16)". AustralianCar.Reviews. Retrieved 2 August 2016.