Description
Fits: 2011 thru 2016 Chevy Silverado/GMC Sierra 2500HD/3500HD LML Duramax Diesel
If your CP4 pump has failed and sent metal throughout the system, it would be a good idea to replace the injector return line as well.
Replaces Part#:
- GM 12639000
- GM 12633835
- Bosch 0445130020
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