Product Description
Industrial Injection 0986437308SHOSE - 42% Over Reman CP3 (LLY)
Unlock reliable fueling and headroom for your tune & injectors. The Industrial Injection 0986437308SHOSE is a remanufactured, 42% over Bosch CP3 for the 2004.5-2005 GM 6.6L LLY Duramax. Built with brand-new Bosch OEM internals and a new Fuel Control Actuator (FCA), it's calibrated to exceed OE specs and backed by a 1-year, unlimited-mileage warranty. Pair with a quality lift pump to protect the high-pressure system and maintain rail pressure under load.
Fitment
- 2004.5-2005 Chevrolet Silverado/Sierra 2500HD & 3500HD - 6.6L LLY Duramax
- Direct replacement/upgrade for factory CP3 on LLY platforms
Why This Pump
- 42% increased displacement vs. stock LLY CP3 for stable rail pressure with larger injectors/tunes.
- Brand-new Bosch internals + new FCA for OE-grade reliability and smooth drivability.
- SEMA Emissions Cert (Manufacturer listing): SC-IDI01-0110.
- 1-Year Warranty from Industrial Injection.
What's Included
- Industrial Injection 0986437308SHOSE Reman 42% Over CP3 (LLY)
- New Bosch FCA installed
- Manufacturer documentation
Recommended Supporting Parts
- AirDog FP-100 4G (01-10 LB7/LLY/LBZ) - stabilize supply side pressure.
- AirDog II-5G DF-165 (01-10 Duramax) - for higher horsepower builds.
- FASS Signature Series 165GPH (01-16 Duramax) - premium filtration & air separation.
- Duramax Fuel Filtration & Filter Adapters - protect your new CP3.
- Industrial Injection Dual CP3 “Kit Only - 04.5-05 LLY - add a second pump for serious power.
- Shop All GM Duramax CP3 Pumps/Components - lines, hardware, and more.
Core & Notes
- Core charge applies per supplier policy; return your usable core promptly after install.
- Prime/bleed the low-pressure side and verify clean filtration before first start.
FAQ
Will this bolt onto my 2004.5-2005 LLY without custom lines?Yes. It's a direct-fit CP3 for LLY with OE-style connections. A healthy lift pump is recommended to support the added displacement.
Do I need a lift pump with a 42% CP3?Highly recommended. A lift pump like the AirDog or FASS stabilizes supply pressure, improves filtration, and protects the CP3 from cavitation under load. See our recommendations above.
Is this emissions compliant?The manufacturer lists SEMA Emissions Certificate SC-IDI01-0110. Always verify local regulations for your use case.
What injectors pair well with a 42% pump?For streetable builds, modest over-fuel injectors with a quality tune work well. Monitor rail pressure; if you're out-fueling the single pump at your power goal, consider a dual-CP3 kit.
All fitment data and features based on manufacturer and CPP Diesel catalog sources.
| Brand | Industrial Injection |
| Part Number | 0986437308SHOSE |
| GTIN | 840256910988 |
| UPC | 840256910988 |
| Engine Compatibility | 2004.5–2005 GM 6.6L LLY Duramax Diesel |
| Configuration | Remanufactured Modified CP3 Injection Pump – 42% higher flow than stock; includes test calibration and pre-assembled hose fittings |
| Core Charge | $400.00 refundable core (added to purchase price) |
| Country of Origin | USA (remanufactured and tested in Salt Lake City, UT) |
| Shipping Method | Standard Ground or Expedited (UPS/FedEx) |
| Shipping Weight | ~22 lb (9.98 kg) |
| Package Dimensions | Approx. 12" × 10" × 8" |
| 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. |
