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.
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.
| Brand | Industrial Injection |
| Part Number | 0986437303SHOSE |
| GTIN | 840256901719 |
| UPC | 840256901719 |
| Engine Compatibility | 2001–2004 GM 6.6L Duramax LB7 |
| Configuration | Remanufactured CP3 injection pump; 42% performance increase; includes high-pressure hose fitting; tuned for higher fuel delivery |
| Core Charge | $300.00 refundable core (in addition to product price) |
| Country of Origin | USA |
| Shipping Method | Standard ground shipping |
| Shipping Weight | ~25 lb (11.3 kg) |
| Package Dimensions | Approx. 12" × 12" × 10" |
| Prop 65 Warning | This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov. |
