STOP AND READ THIS RE: CP4 to CP-ISB21 (not CP3) PUMP CHANGE IN 2021 TRUCKS

[Brutal_HO]

Please post your replies to the thread below and refrain from starting new posts regarding the 2021 change to CP3 CP-ISB21.

CP4 to CP-ISB21S3 (revised CP3) change for 2021 6.7L Diesel Trucks -- Merged Threads

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Threads may be deleted without notice.

Additionally if you joined to post a pump failure, please do so in the thread below. Any new pump failure threads will be merged into that thread.

Ram cp4 failure thread - Post all CP4 failures here DO NOT start a new thread.

I have a 2020 5500 with cp4 failure ,parts are On back order , might be 4 months before I get it back [MOD: HPFP Recall issued 11-11-2021] Compliments of @Jimmy07 : Here’s two advanced communications for it: https://drive.google.com/file/d/17Iw3kDj_LagGfe0yds7PCPcb0UGyeJkd/view?usp=drivesdk...

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