DDP LML CP3 Conversion Kit w/Tuneless CP3 Pump
Description
DDP LML CP3 Conversion Kit w/ Tuneless CP3 Pump
There is no doubt that the CP4 pump found in the LML Duramax has proven to be less than reliable. These pumps have a tendency to fail for many reasons and when they do fail they send metal shavings into the fuel rails and injectors resulting in the need for a complete fuel system overhaul. #1 cause of failure is water or dirt contamination which is not covered under GMs warranty. In order to prevent this from happening we have developed a kit to convert the LML engine to accept and run a much more reliable CP3 pump that was found in the 01-10 Duramax. This kit contains everything needed to swap from a CP4 to a CP3.
Kit comes complete with CP3, lines, fittings, hoses, clamps, adapter plate.
Tuneless NC pump is for those looking for the reliability of a CP3 pump without the need for a retune or looking for additional power. This pump does not support the 9th injector.
Our Tuneless CP3 is backed by our 5-Year Unlimited Mile Warranty against manufacturer defects.
Details
- D05-F01-CCK-105TL
- D05-F01-CCK-105TL
- D05-F01-CCK-105TL
- Dan's Diesel Performance, INC.
- New
Shipping Information
- Item Requires Shipping
- 19.0 lbs.
- W10.0000” x H10.0000” x L10.0000”
- This item ships in its own box.
Customer Reviews
Total Reviews (1)
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Reviewed by: Ryan08/24/2026 01:13AM
Product ownership: Less than 3 months
Purchased from: Dan's Diesel Performance
Comments:
I’ve owned the truck for 3 years, finally swapped to this tuneless cp3 I did it for reliability but was very glad to see a little more power come from my truck. All the parts worked as they should, wish there was some better directions. Had to do some digging to figure out what the little plug was for and what to do with it.