Product Description
Industrial Injection 0986437308DD “Double Dragon 120” CP3 Injection Pump — 2004.5–2005 GM 6.6L Duramax LLY
Make your LLY fueling unstoppable. The Industrial Injection “Double Dragon 120” is a 120% over reman CP3 engineered to hold rail pressure at power levels where stock pumps fall flat. Built with brand-new Bosch OEM internals and a new Bosch Fuel Metering Valve (FCA), each pump is calibrated to exceed OEM spec and backed by a 1-year, unlimited-mileage warranty.
- 120% over flow for serious horsepower builds
- New Bosch FCA installed and calibrated
- Balanced, flow-verified, and tested to exceed OEM standards
- Ideal for big injectors, compounds, or Dual CP3 setups (kit available)
- Designed specifically for 2004.5–2005 GM 6.6L LLY
Fitment
- 2004.5–2005 Chevrolet Silverado/Sierra 2500HD & 3500HD — 6.6L Duramax LLY
What’s Included
- Industrial Injection 0986437308DD “Double Dragon 120” Reman CP3 Pump
- New Bosch Fuel Metering Valve (FCA)
Recommended Parts
High-flow CP3s thrive on rock-solid supply pressure and clean fuel. Pair this pump with:
- Lift pump: AirDog II-5G DF-100 (01–10 Duramax) or FASS Titanium Signature Series (01–10 Duramax)
- Dual fueler hardware: Industrial Injection Dual CP3 Kit (No Pump) — 04.5–05 LLY
- Browse all GM CP3 components: GM Duramax CP3 Pumps & Components
- Shop all Industrial Injection at CPP: Industrial Injection @ CPP Diesel
Notes
- Core charge applies. Return like-for-like CP3 core for full credit.
- Tuning and adequate lift-pump supply are highly recommended for best results.
- Intended for high-fueling builds; ensure injector/turbo system matches your goals.
Specifications
UPC: 840256903300
| Attribute | Value |
|---|---|
| Manufacturer | Industrial Injection |
| Part Number | 0986437308DD |
| Platform | GM 6.6L Duramax LLY (2004.5–2005) |
| Pump Type | High-Pressure CP3 (Reman) |
| Flow Increase | ~120% over stock |
| Fuel Metering Valve | New Bosch FCA (installed) |
| Warranty | 1-Year, Unlimited Mileage (manufacturer) |
| Core Charge | Yes — like-for-like core required |
| Approx. Dimensions | 14" L × 11" W × 9" H |
| Approx. Weight | ~19 lb |
| Emissions Note | 49-state legal; CARB status varies by configuration |
| Cross-References | 0 986 437 308; 0986437308; 0445020030; HPP7308; 97303762; 97780091; and others |
FAQ
Do I need a lift pump with a 120% CP3?
Yes, we strongly recommend a quality lift pump to stabilize supply pressure and protect the CP3. See our AirDog and FASS options for 01–10 Duramax.
Will this pump work on LB7, LBZ, LMM, or LML?
No. This listing is engineered for the 2004.5–2005 LLY only. For other generations, shop our full GM CP3 pumps/components.
Is tuning required?
While the truck can run without custom tuning, proper calibration is recommended to take advantage of the added fuel volume and to manage smoke/EGTs safely.
What size injectors pair well with a 120% pump?
Common builds pair 45%–100% over injectors and upgraded turbo(s). For drag/competition setups, consider a dual-fueler with this pump and suitable injectors.
Is this emissions legal?
49-state legal per manufacturer notes; CARB status may vary by configuration and use. Check local laws before purchase/installation.
