AWTF-80 SC

AWTF-80 SC
Overview
ManufacturerAisin Seiki
Production2005 – 2019
Model years2005 – 2019
Body and chassis
Class6-Speed Transverse Automatic Transmission
RelatedFord 6R
GM 6L
ZF 6HP
Chronology
SuccessorAisin-Toyota 8-speed

The Aisin AW TF-8# SC series is a 6-speed automatic transmission designed for use in transverse engine applications produced by Aisin Seiki. It is built in Anjō, Japan, and is also called TF-80SC (AWF21), AF40-6, AM6, AW6A-EL and TF-81SC (AF21). All-wheel drive transfer cases can be fitted to the AWTF-80 SC.

It uses a Lepelletier gear mechanism, an epicyclic/planetary gearset, which can provide more gear ratios with significantly fewer components. This means the Aisin AW TF-8# SC series is actually lighter than its five-speed predecessors.

The Ford 6R, GM 6L, and ZF 6HP transmissions are based on the same globally patented gearset concept. The AWTF-80 SC is the only one for transverse engine installation.

Gear Ratios
Gear
Model
R 1 2 3 4 5 6 Total
Span
Span
Center
Avg.
Step
Compo-
nents
Aisin AWTF-80
2005
−3.394 4.148 2.370 1.556 1.155 0.859 0.686 6.049 1.687 1.433 3 Gearsets
2 Brakes
3 Clutches
ZF 6HP All · 2000 −3.403 4.171 2.340 1.521 1.143 0.867 0.691 6.035 1.698 1.433
  1. Differences in gear ratios have a measurable, direct impact on vehicle dynamics, performance, waste emissions as well as fuel mileage
  2. first transmission to use this 6-speed gearset concept