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CP4 to CP-ISB21S3 (revised CP3) change for 2021 6.7L Diesel Trucks -- Merged Threads
Well, I got tired of waiting on them to do something so I did something. I sold my 2019 with 16k miles back to the dealer for what I paid for it. Don’t want to buy a Ford with a cp4. Waiting to see if the 2021+ rams have any pump issues.- Smokediver65
- Post #1,171
- Forum: 6.7 Cummins I6 Turbo Diesel