Product Description
Overview
Unlock reliable rail pressure and support for larger injectors and tuning with the Industrial Injection 0986437303SHO Modified 42% CP3 for the 2001-2004 GM 6.6L LB7 Duramax. Built from genuine Bosch OE cores and remanufactured with performance-calibrated internals, this pump is a true drop-in that delivers approximately 42% more fuel than stock while maintaining smooth drivability.
- Flows ~42% more than stock to support performance builds
- Direct bolt-on replacement for LB7 CP3
- Thoroughly remanufactured with OE-grade components
- Backed by a 1-year, unlimited-mileage warranty
Fitment
GM Duramax 6.6L LB7: 2001, 2002, 2003, 2004 (Chevrolet Silverado 2500/3500 HD & GMC Sierra 2500/3500 HD)
What's Included
- 1x Industrial Injection Modified 42% CP3 Pump (P/N: 0986437303SHO)
- Installed fuel control actuator (FCA)
- Core return instructions
Recommended Parts
For best results, pair with a quality lift pump and related fuel system upgrades:
- AirDog FP-100 4G (01-10 Duramax)
- AirDog II-5G DF-165 (01-10 Duramax)
- Shop FASS Lift Pumps
- GM Duramax CP3 Pumps & Components
- Industrial Injection Stock CP3 (LB7)
- Industrial Injection Dragon Fire 85% CP3 (LB7)
Helpful Notes
- Like-for-like core required for full core credit; mismatched cores may receive reduced credit.
- A lift pump is strongly recommended to stabilize supply pressure and extend CP3 life.
- For off-road/race use where applicable. Verify local emissions compliance.
FAQ
How much power will a 42% CP3 support?On a healthy LB7 with proper tuning and fuel system, customers commonly see ~100+ RWHP potential from the added pump capacity, plus headroom for larger injectors. Actual gains depend on total combo.
Is tuning required after installing this pump?
Recommended. While the pump bolts on and runs, custom tuning optimizes rail pressure targets and drivability with larger injectors.
Do I need a lift pump?
Strongly recommended. A quality lift pump (AirDog or FASS) improves inlet pressure, protects the CP3, and helps maintain commanded rail pressure under load.
What about the core charge?
A refundable core charge applies. Return a like-for-like LB7 CP3 in acceptable condition to receive full credit per CPP Diesel's core policy.
Will this fit other Duramax generations?
This specific part number is calibrated for the 2001-2004 LB7. See our CP3 category for LLY/LBZ/LMM options.
| Specifications for INDUSTRIAL INJECTION 0986437303SHO | |
|---|---|
| Brand | Industrial Injection |
| Part Number | 0986437303SHO |
| GTIN | 00840256903218 |
| UPC | 840256903218 |
| Engine Compatibility | 2001–2004 GM 6.6L Duramax LB7 (Chevy Silverado/GMC Sierra 2500/3500) |
| Configuration | Remanufactured Modified 42% CP3 Injection Pump |
| Country of Origin | Not specified |
| Core Charge | $300 (refundable per supplier policy) |
| Shipping Weight | ~19 lb (pump only) |
| Package Dimensions | Approx. 14" × 11" × 9" |
| Shipping Method | Ground/Parcel |
| Prop 65 Warning | This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. Learn More |
