Hay Dude
Super Star Member
- Joined
- Aug 28, 2012
- Messages
- 18,603
- Location
- A Hay Field along the PA/DE border
- Tractor
- Challenger MT655E, Massey Ferguson 7495, Challenger MT535B, Krone 4x4 XC baler, (2) Kubota ZD331’s, 2020 Ram 5500 Cummins 4x4, IH 7500 4x4 dump truck, Kaufman 35’ tandem 19 ton trailer, Deere CX-15, Pottinger Hay mowers
I am one of the “lucky” owners of a ‘19 or ‘20 Ram Cummins with the CP-4 pump. If you didn’t already know, these pumps are found in all 3 major brands of truck and across a few different models as well.
As far as I know, Ram was the only manufacturer to offer free replacement of all affected models.
Mine was done on Monday & Tuesday, absolutely free of charge. I have read the replacement cost per truck cost Stellantis about $8,000 per truck! Ram did the right thing for its’ customers.
Truck feels basically the same. Start times are just slightly longer than with the CP-4. Could be air working it’s way out. Interesting that the CP-4 actually developed higher rail/injector pressures than the CP-3.
Read about the whole thing here. Pretty interesting read. Looks like Ford & GM have yet to step up to the plate despite lawsuits.
www.dieselworldmag.com
As far as I know, Ram was the only manufacturer to offer free replacement of all affected models.
Mine was done on Monday & Tuesday, absolutely free of charge. I have read the replacement cost per truck cost Stellantis about $8,000 per truck! Ram did the right thing for its’ customers.
Truck feels basically the same. Start times are just slightly longer than with the CP-4. Could be air working it’s way out. Interesting that the CP-4 actually developed higher rail/injector pressures than the CP-3.
Read about the whole thing here. Pretty interesting read. Looks like Ford & GM have yet to step up to the plate despite lawsuits.

THE RECALL YOU WANTED - Cummins CP4
With a CGI block, forged-steel connecting rods, updated pistons with low-friction rings, and 1,000 lb-ft of torque right out of the box,
