Product Description
Put more clean, reliable fuel on tap for your 2004.5–2005 GM 6.6L LLY Duramax with the Industrial Injection 0986437308SHO Remanufactured Modified 42% CP3 Injection Pump. Built from a genuine Bosch core and remanufactured with all-new internal components, this pump is calibrated to flow approximately 42% over stock to support larger injectors and tuning while maintaining OE drivability and rail pressure control.
- Calibrated & flow-tested for ~42% increase over stock
- All-new Bosch OEM internal components during reman
- Direct bolt-in for LLY CP3 systems (no wiring changes)
- Ideal with upgraded injectors, lift pump, and tuning
- Competition/Race use where applicable emissions laws permit
Fitment
Fits the following LLY Duramax applications (mid-2004.5–2005):
- 2004.5–2005 Chevy Silverado 2500HD/3500HD 6.6L LLY
- 2004.5–2005 GMC Sierra 2500HD/3500HD 6.6L LLY
What’s Included
- Industrial Injection 0986437308SHO Modified 42% CP3 Injection Pump
- Fuel pressure regulator (installed) and required seals/gaskets (as supplied by reman)
- Installation instructions (basic)
Recommended Supporting Parts
- Lift pump (LLY) to ensure consistent inlet supply
- Upgraded LLY injectors matched to your power goal
- High-flow rail pressure relief valve
- CP3 installation hardware kit (lines/seals as needed)
- Custom LLY tuning to calibrate for added fuel
Cross-Reference & Alternatives (CPP Diesel)
- Stock reman CP3 (LLY) — direct stock flow
- Dragon Fire 85% CP3 — higher output
- Double Dragon 120% CP3 — max fueling
UPC & Specifications
Note: Industrial Injection does not consistently publish a numeric UPC for this modified pump. A commonly referenced EAN/UPC for the base Bosch reman 0986437308 is 4047024236394. If you require a specific barcode for inventory, please contact us.
| Brand | Industrial Injection |
|---|---|
| Manufacturer Part # | 0986437308SHO |
| Engine | GM 6.6L Duramax (LLY) |
| Model Years | 2004.5–2005 |
| Pump Type | Bosch CP3 (High Pressure Common Rail) |
| Flow Increase | ~42% over stock |
| Core Charge | Yes — refundable upon acceptable core return |
| Emissions Use | Race/Competition where permitted |
| Warranty | 1 year (unlimited mileage) limited manufacturer warranty |
| UPC/EAN (Reference) | 4047024236394 (Bosch 0986437308 base, informational) |
Installation Notes
- Prime the system and verify lift-pump supply pressure during initial start.
- LLY-specific tuning is recommended to realize full benefits.
- Use only clean, water-separated diesel fuel and fresh filters.
FAQ
Is this pump a direct bolt-in for my LLY?Yes. It’s built from the correct Bosch LLY CP3 architecture and installs in the factory location using OE-style connections.
Do I need tuning with a 42% over CP3?While the truck will run on stock calibration, custom tuning is recommended to properly command rail pressure and fueling, especially with larger injectors and a lift pump.
Will this pass emissions testing?Modified fueling components are generally intended for race/competition use only. Check and comply with all local, state, and federal emissions laws before installation.
What’s the core policy?A refundable core charge applies. Return an acceptable LLY CP3 core in rebuildable condition within the specified timeframe to receive your core refund.
How much power will it support?Supportable power depends on total combo (injectors/turbo/tune). A 42% over CP3 is a proven match for mid-power builds that outgrow the stock pump but don’t need an 85–120% unit.
