Product Description
Direct-fit stock replacement injector for the 2004.5–2005 GM 6.6L Duramax LLY. Industrial Injection’s 0986435504SE-IIS reman is built with brand-new Bosch OEM internals and calibrated to tight tolerances for smooth idle, clean starts, and factory-correct fueling.
Fitment
- 2004.5–2005 Chevrolet/GMC 2500HD & 3500HD 6.6L Duramax LLY (mid-2004 changeover to LLY)
What’s Included
- (1) Remanufactured LLY injector (Bosch 0986435504 base)
- New copper crush washer and O-rings for installation
Key Details
- Built with brand-new Bosch OEM parts and nozzles
- Factory replacement flow for stock applications
- 2-Year unlimited-mileage warranty
- $150 core charge (fully refundable when returned within the listed window)
Recommended Parts (CPP Internal Links)
- Industrial Injection Stock CP3 Injection Pump — LLY (2004.5–2005)
- Injector Return Line Kit — LLY/LBZ/LMM (2004.5–2010)
- Shop All Duramax Injectors / Nozzles
Cross-Reference / Alternatives
- Increase flow with matched options:
- Bosch base part: 0986435504 (reference only)
Helpful Notes
- Sold individually; order quantity (8) for a complete set.
- Verify your truck is an LLY (mid-2004 changeover) before ordering.
- Maintaining clean fuel supply and proper filtration is critical to injector life.
FAQ
Is this a true stock-flow injector?Yes. The 0986435504SE-IIS is calibrated to factory stock flow for the LLY. If you need more fuel, consider the R1 (23 LPM) or R2 (25 LPM) variants linked above.
What comes with the injector?Each injector ships with a new copper crush washer and O-rings for installation.
What is the warranty and core policy?Industrial Injection backs this unit with a 2-year, unlimited-mileage warranty. A $150 core applies and is refundable when your core is returned within the specified timeframe.
Should I replace any other parts during injector service?We recommend refreshing the return line kit and verifying CP3 health; a new stock CP3 is a great preventative step on higher-mileage trucks.
