Product Description
S&S Diesel CP3-DMX-LBZ/LMM is a brand-new LBZ-based CP3 high-pressure pump engineered for 2001–2010 GM Duramax 6.6L LB7 / LLY / LBZ / LMM. It’s also a perfect match for LML CP3 conversion builds and dual CP3 setups that demand reliable rail pressure and clean drivability.
- NEW Bosch LBZ-based CP3 platform, assembled and validated by S&S Diesel
- Excellent high-rpm fueling stability compared to stock LBZ pump
- Ideal for stock to moderately modified trucks, LML CP3 conversions, and twin-pump (“dual fueler”) builds
- Data-tested and built to S&S’s OE-grade standards
Fitment
- 2001–2010 GM Duramax 6.6L: LB7 / LLY / LBZ / LMM
- Compatible with LML CP3 Conversion (with pump)
- Works in Dual CP3 (Dual Fueler) kits for LBZ/LMM
What’s Included
- 1x S&S Diesel CP3-DMX-LBZ/LMM (NEW LBZ-based) high-pressure pump
- Factory-style connections for clean install on LB7/LLY/LBZ/LMM
- Tested and documented by S&S for consistent performance
Recommended Parts & Helpful Links
- Need the exact product you’re viewing? See our listing: S&S CP3-DMX-LBZ/LMM (CPP Diesel)
- Running a CP4-equipped LML? Add the CARB-legal conversion with pump: S&S LML CP3 Conversion Kit w/ Pump (50-State)
- Dual-fueler hardware for LBZ/LMM builds: PPE Dual Fueler Kit (with Pump) – 2006–2010 LBZ/LMM
- Lift pump to protect the CP3 and stabilize supply pressure (01–10): AirDog II-5G DF-100 – 2001–2010 Duramax
- Shop the full Duramax CP3 pumps/components category: GM Duramax CP3 Fuel Pumps
- Explore more S&S Diesel parts at CPP: S&S Diesel Motorsport @ CPP Diesel
FAQ
Will this pump bolt onto my 2001–2010 LB7/LLY/LBZ/LMM without custom lines?Yes. It’s an LBZ-based CP3 with factory-style connections for 2001–2010 Duramax models.
Can I use this on an LML?Yes—when paired with a proper LML CP3 conversion kit. See our 50-state CARB-legal option above.
Do I need custom tuning?For a standard NEW LBZ-based CP3 replacement, tuning is typically not required. High-output SuperSport or stroker variants often benefit from tuning.
Is a lift pump required?Not strictly required on mild builds, but we strongly recommend a quality lift pump (e.g., AirDog II-5G) to improve supply pressure and pump longevity.
Does this work with dual CP3 kits?Yes. It’s commonly used as the secondary pump in dual-fueler systems for LBZ/LMM platforms.
