The 2017 6.7 Cummins engine, commonly found in heavy-duty Ram trucks, is paired with powerful transmissions designed to handle high torque and demanding workloads. However, when repair or replacement becomes necessary, truck owners often wonder: what year model transmissions are interchangeable with a 2017 6.7 Cummins?
The 2017 Cummins 6.7L was typically paired with two main types of transmissions:
68RFE automatic transmission – Found in most Ram 2500 and 3500 models.
AISIN AS69RC automatic transmission – Available in Ram 3500 heavy-duty trucks for higher towing capacities.
G56 6-speed manual transmission – Offered in select 2500/3500 models, though becoming less common.
Each of these transmissions has its own interchangeability considerations.
The 68RFE automatic transmission was introduced in 2007.5 and continued through newer Ram trucks. For a 2017 model:
Generally compatible with 2010–2018 Ram 2500/3500 models equipped with the 6.7 Cummins.
Minor differences in electronics and programming may require TCM (Transmission Control Module) reprogramming.
The AISIN AS69RC transmission was introduced in 2013 for high-output Cummins models.
Interchangeable with 2013–2018 Ram 3500 models with the HO Cummins.
Some calibration adjustments may be necessary to match the ECM and TCM for proper operation.
The G56 6-speed manual transmission was used from 2005–2018 in Cummins-powered Ram trucks.
For a 2017 6.7 Cummins, most 2007–2018 G56 units are compatible.
Clutch and flywheel specifications may vary slightly depending on year, so matching parts is recommended.
Electronics: Later-year transmissions may require ECU/TCM reprogramming for compatibility.
Wiring Harnesses: Ensure connectors match or be prepared for modifications.
Mounting & Hardware: Transmission mounts and driveshafts may differ slightly between years.
Intended Use: Heavy towing applications may benefit from the AISIN swap, while standard 2500 use may stay with the 68RFE.
For a 2017 6.7 Cummins, transmission interchangeability depends on the type:
68RFE: Compatible with most 2010–2018 models.
AISIN AS69RC: Works with 2013–2018 HO Cummins trucks.
G56 Manual: Generally fits 2007–2018 Cummins models.
When swapping, always confirm part numbers, electronics compatibility, and calibration requirements. With the right match, your 2017 6.7 Cummins will continue delivering reliable performance on the road or the job site.