2004.5-2005 GM 6.6L DURAMAX LLY DIESEL FUEL INJECTOR - REMANUFACTURED
Restore the performance and efficiency of your Duramax engine with this Remanufactured Fuel Injector for 2004.5–2005 GM 6.6L Duramax LLY diesel engines. Each injector is professionally remanufactured to meet or exceed OEM specifications, ensuring precise fuel delivery, reliable operation, and long service life. The injector body and nozzle are ultrasonically cleaned, inspected, and flow-tested to guarantee consistent performance and proper balance across all cylinders.
These remanufactured injectors are an excellent choice for stock replacement, offering the same performance as new units at a fraction of the cost. Perfect for daily driving, towing, or light performance use.
What’s Included in the Kit:
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(1) Remanufactured Fuel Injector – LLY Application
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(1) O-Ring and Seal Kit (Installed)
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(1) Copper Washer
Features and Benefits:
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OEM-quality remanufactured injector for 2004.5–2005 GM/Chevrolet 6.6L Duramax LLY
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Restores factory fuel economy, power, and emissions compliance
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Each injector is disassembled, cleaned, and fitted with new internal components
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Flow-balanced to ensure even fuel delivery across cylinders
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100% tested for proper spray pattern, leak integrity, and response time
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Direct-fit replacement—no modifications required
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Cost-effective alternative to new OEM injectors
Truck Compatibility:
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2004.5 Chevrolet Silverado 2500HD / 3500 6.6L Duramax LLY
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2004.5 GMC Sierra 2500HD / 3500 6.6L Duramax LLY
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2005 Chevrolet Silverado 2500HD / 3500 6.6L Duramax LLY
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2005 GMC Sierra 2500HD / 3500 6.6L Duramax LLY
Product Summary:
This remanufactured LLY fuel injector provides factory-grade reliability and precision fueling for your 6.6L Duramax. Designed to deliver OEM-level performance and efficiency, it’s the perfect replacement for worn or leaking injectors.
Shipping Disclaimer
✔️ We ship via USPS, UPS, and FedEx.
✔️ Carrier selection is based on package size, weight, and destination.
✔️ Expedited shipping options available, call to check freight options
✔️ Orders are processed within 1 business day (Monday–Friday).
✔️ Orders placed on weekends or holidays will be processed on the next business day.
✔️ Tracking information will be provided once the item ships.
✔️ Shipping to PO Boxes, APO/FPO may be limited based on carrier restrictions.
California Proposition 65 Warning:
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, go to www.P65Warnings.ca.gov
The 8th digit of the VIN will identify which engine model you have. LLY engines have "2" as the 8th digit of the VIN.
- Comes with New Combustion Seal and O-rings for installation.
- Every injector is individually tested on a state of the art test bench to ensure they meet OE specifications.
- Every injector test consists of: solenoid performance, response time, back leak flow test, full load test, mid load test, idle test, pre-injection test, and emission test points.
Injector Type: Bosch common-rail injectors
Flow Rate: Approximately 26-28 liters per hour (lph) at 160 MPa (megapascal)
Fuel Pressure: Up to 26,000 psi (1,800 bar)
Actuation Method: Solenoid
Control Method: Electronic signals from the Engine Control Module (ECM)
| Model Year(s) | 8th digit of VIN | Duramax Model |
| 2001-2004 | 1 | LB7 |
| 2004.5-2006 | 2 | LLY |
| 2006-2007 | D | LBZ |
| 2007-2010 | 6 | LMM |
| 2011 | 8 | LML |
Install Specs:
Injector hold-down bolts: 22 lb-ft.
Fuel Injector fuel pipe nut: 30 lb-ft.
Fuel Injector fuel pipe bracket bolt: 15 lb-ft.
