Product Description
S&S Diesel CP3-DMX-12 is a brand-new, LBZ-based 12mm CP3 delivering 1,590 mm³/rev of displacement for 2001–2010 GM Duramax 6.6L LB7 / LLY / LBZ platforms. Built from new Bosch components and S&S Diesel Motorsport engineering, it’s the proven path to clean, reliable rail pressure on single-CP3 street/strip builds.
Fitment
- GM Duramax 6.6L (2001–2010): LB7, LLY, LBZ (LBZ-based pump)
- Direct CP3 replacement/upgrade for LB7/LLY/LBZ configurations
- Note: 2001–2005 LB7/LLY generally require custom tuning to fully utilize increased pump capacity.
Why This Pump
- 12mm stroke – 1,590 mm³/rev output for strong single-pump fueling
- Brand-new unit (not reman), built on the robust LBZ architecture
- Engineered by S&S Diesel Motorsport for durability and high-RPM efficiency
What’s Included
- New S&S Diesel CP3-DMX-12 12mm CP3 pump
- Manufacturer documentation as applicable
Recommended Parts (CPP-Only Links)
- Lift Pump / Filtration: AirDog Systems or FASS Systems
- Rail Pressure Relief Valve (LLY/LBZ/LMM): Exergy 2000 Bar PRV or Exergy 2600 Bar PRV (race)
- Category Browsing: Duramax CP3 Pumps & Components • GM Duramax Parts • Shop S&S Diesel at CPP
For early trucks (2001–2005 LB7/LLY), custom calibration is typically required to command and control the added pump capacity. Later LBZ strategies are generally more accommodating but still benefit from proper tuning.
FAQ: What lift pump should I run?A quality lift pump with filtration (AirDog or FASS) is strongly recommended to ensure adequate supply pressure and protect the CP3/injectors from contamination.
FAQ: Will this work on LMM or LML?This LBZ-based CP3 is intended for LB7/LLY/LBZ architectures. LMM swaps typically require additional parts and tuning; LML trucks require a dedicated CP3 conversion kit.
