Transmissions
Every transmission paired with a diesel engine on this site, with what it's known for and known to struggle with. Click through from any truck's year-range entry, or browse the full list here.
Aisin AS69RC 6-Speed Automatic
6-speed automatic · 2013-2026
Ram 2500-3500, 6.7L Cummins high-output
Allison 10-Speed (10L1000) Automatic
10-speed automatic · 2020-2026
Chevrolet/GMC 2500HD-3500, Duramax L5P (2020 onward)
Allison 1000 (5-Speed, LCT1000) Automatic
5-speed automatic · 2001-2006
Chevrolet/GMC 2500HD-3500, Duramax LB7 and LLY
Allison 1000 (6-Speed) Automatic
6-speed automatic · 2006-2019
Chevrolet/GMC 2500HD-3500, Duramax LBZ, LMM, LML, and early L5P
Chrysler 46RH/47RH/47RE 4-Speed Automatic
4-speed automatic · 1994-2004
Dodge/Ram 2500-3500, 12-valve and 24-valve Cummins
Chrysler 48RE 4-Speed Automatic
4-speed automatic · 2003-2007
Dodge Ram 2500-3500, 24-valve Cummins (high-output)
Chrysler 68RFE 6-Speed Automatic
6-speed automatic · 2007-2026
Dodge/Ram 2500-3500, 6.7L Cummins (standard output)
Chrysler A727 (TorqueFlite) 3-Speed Automatic
3-speed automatic · 1989-1991
Dodge D250/W250 and D350/W350, 12-valve Cummins 6BT
Ford 4R100 4-Speed Automatic
4-speed automatic · 1999-2003
Ford F-250/F-350 Super Duty, 7.3L Power Stroke
Ford 5R110W TorqShift 5-Speed Automatic
5-speed automatic · 2003-2010
Ford F-250/F-350 Super Duty, 6.0L and 6.4L Power Stroke
Ford 6R140W TorqShift 6-Speed Automatic
6-speed automatic · 2011-2026
Ford F-250/F-350 Super Duty, 6.7L Power Stroke
Ford E4OD 4-Speed Automatic
4-speed automatic · 1994-1997
Ford F-250/F-350, 7.3L IDI Turbo and Power Stroke
Getrag G360 5-Speed Manual
5-speed manual · 1989-1993
Dodge D250/W250 and D350/W350, 12-valve Cummins 6BT
GM 4L80-E 4-Speed Automatic
4-speed automatic · 1992-2000
Chevrolet/GMC C/K and Silverado/Sierra HD, 6.5L Detroit Diesel turbo
Mercedes-Benz G56 6-Speed Manual
6-speed manual · 2005-2007
Dodge Ram 2500-3500, 24-valve Cummins (final years)
New Venture NV4500 5-Speed Manual
5-speed manual · 1994-2002 (Ram); 2001-2006 (GM Duramax)
Dodge/Ram 2500-3500 12-valve and 24-valve Cummins; Chevrolet/GMC 2500HD-3500 Duramax LB7 and LLY
New Venture NV5600 6-Speed Manual
6-speed manual · 1999-2004
Dodge/Ram 2500-3500, 24-valve Cummins
ZF PowerLine 8AP1075 (TorqueFlite HD) 8-Speed Automatic
Unverified draft8-speed automatic · 2025-2026
Ram 2500-3500, 6.7L Cummins (all trim levels, replacing the 68RFE)
ZF S5-47 5-Speed Manual
Unverified draft5-speed manual · 1994-1997
Ford F-250/F-350, 7.3L IDI Turbo and Power Stroke
ZF S6-650 6-Speed Manual
6-speed manual · 1999-2003 (Ford); 2001-2006 (GM Duramax)
Ford F-250/F-350 Super Duty 7.3L Power Stroke; Chevrolet/GMC Duramax LB7-LLY-LBZ
ZF S6-750 6-Speed Manual
6-speed manual · 2003-2010
Ford F-250/F-350 Super Duty, 6.0L and 6.4L Power Stroke