Product Description
Industrial Injection 0986437303SHOSE GM LB7 Reman Modified 42% CP3 Injection Pump — 2001–2004 6.6L Duramax
Turn up your LB7’s fueling the right way. This Industrial Injection Remanufactured Modified 42% CP3 (P/N 0986437303SHOSE) delivers ~42% more fuel than stock to support larger injectors and aggressive tuning while retaining factory-style fitment on 2001–2004 GM 6.6L Duramax LB7 trucks. Expect substantially improved high-rpm rail pressure stability and headroom for future upgrades when paired with proper lift-pump supply and clean fuel.
- Direct-fit for 2001–2004 Chevy/GMC 2500HD/3500HD 6.6L LB7 (CP3-equipped).
- Flows ~42% over stock; commonly supports ~100+ RWHP gains depending on setup.
- Core required (like-for-like recommended).
Fitment
2001, 2002, 2003, 2004 GM Duramax 6.6L LB7 — Silverado/Sierra 2500HD & 3500HD (CP3 high-pressure pump).
Recommended Parts (CPP-Only Links)
- AirDog II-5G DF-100 Lift Pump (01–10 Duramax) — Maintain clean, positive supply to the CP3.
- PPE CP3 1/2" Fuel Feed Line Kit (01–10 GM) — Reduce restriction on the inlet side.
- S&S Diesel LB7 TorqueMaster Injector Set (New) — Balanced, OE-level quality for performance builds.
- Shop All GM Duramax CP3 Pumps & Components — More CP3 options and accessories.
Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Industrial Injection |
| Manufacturer Part # | 0986437303SHOSE |
| Flow Increase | ~42% over stock |
| Core Charge | Required (like-for-like recommended) |
| UPC | 840256903225 |
| GTIN | 840256903225 |
| Prop 65 | Yes — Cancer & Reproductive Harm (fuels/combustion by-products). |
| Vehicle Fitment | 2001–2004 GM 6.6L Duramax LB7 (Silverado/Sierra 2500HD/3500HD) |
Helpful Notes
- Supply Pump Recommended: A quality lift pump (e.g., AirDog II-5G) helps protect the CP3 and maintain rail stability under load.
- Tuning: Gains depend on turbo, injectors, and calibration; custom tuning may be required for smoke control and drivability.
- Installation Best Practices: Purge air properly, verify no inlet restrictions, and monitor commanded vs. actual rail pressure after install.
FAQ
Is this a direct bolt-on for LB7?Yes. It’s designed as a drop-in CP3 replacement for 2001–2004 LB7 trucks using factory connections.
How much power can a 42% over CP3 support?Industrial Injection notes typical 100+ RWHP increases versus stock when the rest of the system (injectors, turbo, tuning) supports the added fuel.
Do I need to send a core?Yes. A like-for-like core is required for full credit; mismatched numbers may reduce credit.
Will I need a lift pump?Strongly recommended for performance builds to ensure adequate inlet supply and pump longevity. See our recommended AirDog systems above.
