Who we are
Cummins Owners is an owner's handbook from the Dodge Off Road crew: experts and enthusiasts in the off-road and diesel truck industry since the early 2000s.
How we write it
Every chapter is built from manufacturer manuals and guides, government sources and specialist industry sources, with at least two sources behind key points and a source list on each page. We do not invent intervals, specs, torque values or part numbers; where makers publish them, we send you to the manual.
Related sites
For engine specs and identification, the troubleshooting library, Ram lift planning and steering symptoms, see the sister sites linked in the Ram, maintenance, lift and steering chapters.
Dodge Off Road
Dodge Off Road builds suspension and steering for Ram trucks. Questions on fitment? Store FAQ.
Photo credits
Free-license photos from Wikimedia Commons, credited below and in captions. Product photos are Dodge Off Road's own.
- Green 1994-2002 Dodge Ram 2500 regular cab with the 5.9L Cummins diesel: Green 94–02 Dodge RAM 2500 regular cab - Cummins 5.9L Diesel.jpg by FLGALine1999, CC0.
- Black 2004-2005 Dodge Ram 3500 crew cab pickup: '04-'05 Dodge Ram 3500 Crew Cab.JPG by Bull-Doser, Public domain.
- White 2005 Dodge Ram 2500 Cummins quad cab parked on a street: '05 Dodge Ram 2500 Cummins Crew Cab (Orange Julep).jpg by Bull-Doser, Public domain.
- Gray and silver 2012 Ram 2500 Heavy Duty crew cab with the Cummins diesel: 2012 Ram 2500 Heavy Duty crew cab Cummins diesel - in Aberdeen NC.jpg by CZmarlin, CC0.
- White 2020 Ram 2500 Cummins crew cab parked by a house: '20 Ram 2500 Cummins Crew Cab.jpg by Bull-Doser, Public domain.
- Black Ram 3500 Limited crew cab with the Cummins diesel, front view: Ram 3500 Cummins DS-DJ Crew Cab.jpg by Bull-Doser, Public domain.
- Black 2019 Ram 3500 Heavy Duty dually with the Cummins Turbo Diesel at an auto show: 2019 Ram 3500 Heavy Duty Turbo Diesel with Cummins engine front NYIAS 2019.jpg by Kevauto, CC BY-SA 4.0; resized, metadata removed.
- 5.9L Cummins in a Dodge Ram with the valve cover off, showing the rocker arms: 5.9 Cummins Diesel.jpg by Dana60Cummins, CC BY-SA 3.0; resized, metadata removed.
- White 2019 Nissan Titan XD PRO-4X pickup: 19 Nissan Titan XD PRO-4X.jpg by HJUdall, CC0.
- Late-1990s Class A motorhome parked on a city street: 1998 Tiffin Allegro Class A motorhome.jpg by Oleg Yunakov, CC BY-SA 4.0; resized, metadata removed.
- Red Peterbilt 579 pulling a white dry-van trailer: Peterbilt 579 Lone Pine 2018-04-07 California 01.jpg by Agnieszka Kwiecień, Nova, CC BY-SA 4.0; resized, metadata removed.
- Black 2014-2016 Ram 3500 Cummins crew cab dually towing a car-hauler trailer: 2014-2016 Ram 3500 Crew Cab Towing Cummins.JPG by Bull-Doser, Public domain.
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Last reviewed 2026-10-19. General information only: your owner's manual and service information come first.