Ram 2021 questions
Going to get a new Ram Have a 2012 3500 Dually going to go to a 3500 crew cab 8 ft bed SRW, is the HO worth the 3 thousand upgrade over the standard cummins. I have the high output on my dually but ...
Forum Discussion
I think the pump failures are rare and at least Cummins seems to look after you if it happens under warranty. The CP3 is a much more reliable pump than the CP4. It is capable of handling a bit of abuse and if it does fail it doesn’t destroy the rest of the fuel system. That said I wouldn’t base my decision of what truck to buy solely on avoiding a crappy designed CP4 pump. The regular output Cummins has higher compression pistons in it and is likely to get a little better fuel economy than the high output.
