Product Description
S&S Diesel CP3-DMX-SS is the brand-new, LBZ-based SuperSport CP3 designed for higher output above 3,500 RPM. It’s a direct, high-performance replacement for 2001–2010 GM Duramax 6.6L LB7 / LLY / LBZ platforms and is built from a new Bosch LBZ pump that S&S modifies for sustained delivery at elevated engine speeds. Backed by a 2-year manufacturer warranty.
- Fitment: 2001–2010 GM Duramax 6.6L LB7 / LLY / LBZ (see details below)
- Output Focus: Higher fuel delivery maintained at >3500 RPM for performance use
- Build: Brand-new LBZ-based Bosch CP3 (not reman)
- Warranty: 2 years (manufacturer)
Fitment
- Chevy Silverado / GMC Sierra 2500HD & 3500HD — 2001–2004 LB7, 2004.5–2005 LLY, 2006–2007 LBZ
- Works across 2001–2010 Duramax platforms where an LBZ-based CP3 is applicable; tuning is typically required on 2001–2005 models.
Recommended Parts (CPP-curated)
- GM DURAMAX CP3 PUMPS & COMPONENTS — category hub for pumps, FCA/MPROP, install hardware.
- FUEL SYSTEMS / COMPONENTS (DURAMAX) — filters, lines, regulators, rails, ancillary parts.
- GM DURAMAX PARTS (ALL GENERATIONS) — browse supporting mods (intakes, intercoolers, head studs, etc.).
- S&S 12MM CP3 HIGH SPEED (LBZ-BASED) — step up for high-RPM fueling.
- S&S 14MM CP3 (LBZ-BASED) — maximum single-pump displacement.
- FASS LIFT PUMPS & FILTRATION (DURAMAX) — improve supply side & protect injectors.
Helpful Notes
- Tuning: Custom calibration is commonly required on 2001–2005 (LB7/LLY) trucks to maximize performance and drivability with this pump.
- High-RPM Strategy: S&S internally modifies their LBZ-based pumps so they keep delivering fuel well beyond typical peak RPM, which is why the SuperSport variant emphasizes >3500 RPM performance.
- Data Sheet: S&S includes a pump data sheet used for proper ECM calibration & QA. Keep it with your build records.
FAQ
Is this pump brand-new or reman?Brand-new LBZ-based Bosch CP3 that S&S modifies (not a reman core).
Will it fit my 2001–2005 LB7/LLY without tuning?Physical fitment is correct; however, custom tuning is typically required to get the most out of it on 2001–2005 trucks.
What’s the advantage of “higher output >3500 RPM”?The SuperSport pump sustains fuel delivery at elevated engine speeds where standard pumps start to nose over, supporting high-RPM performance builds.
What warranty does S&S provide?Manufacturer warranty is 2 years on S&S CP3 pumps. Keep your purchase record and follow install/filtration best practices.
Is there an official S&S comparison for CP3 variants?Yes—S&S publishes a CP3 pump comparison showing SuperSport and high-speed variants across RPM. Useful when sizing for your goals.
