Engineered specifically for 2006 through 2007 Chevrolet Silverado and GMC Sierra 2500HD/3500HD Classic trucks powered by the 6.6L LBZ Duramax diesel engine, the genuine Bosch Remanufactured Stock Fuel Injector (Part # 0986435521 / OE Cross 0445120042) provides the ultimate factory-spec replacement to correct rough idling, hard starting, and fuel dilution.

Completely stripped, cleaned, and rebuilt using all-new internal wear components and the latest factory engineering revisions, this genuine Bosch unit matches original flow rates perfectly. Sold individually, this remanufactured component carries an exchange core requirement.

Key Features & Benefits

• Genuine Bosch Remanufactured OE: Rebuilt directly by Bosch utilizing the latest factory specifications, updated internal components, and stringent end-of-line testing.
• Stock Flow Calibration: Maintains precise factory fuel delivery to ensure smooth idle, optimal fuel economy, and reliable towing power.
• Direct-Fit OE Replacement: Matches factory mounting dimensions, electrical connectors, and common-rail plumbing without tuning modifications.
• Individual Availability: Sold individually to allow targeted replacement of specific out-of-balance cylinders.
• Core Exchange Program: Backed by standard core return policies with a fully refundable core deposit.

Technical Specifications

• Manufacturer / Brand: Bosch (Original Equipment Manufacturer)
• Manufacturer Part Number / SKU: 0986435521 (Remanufactured Stock Common Rail Injector)
• Product Type: Remanufactured Common Rail Fuel Injector
• Horsepower Rating: Stock Replacement
• Truck Compatibility: 2006–2007 GM Silverado / Sierra 2500HD / 3500HD (LBZ Duramax)
• Engine Platform: 6.6L V8 Turbo Diesel (LBZ)
• Core Requirement: Core exchange program applies (refundable core deposit required at purchase).
• Warranty: Bosch 2-Year Unlimited Mileage Warranty

Vehicle Fitment & Technical Installation Notes

• 2006–2007 GM 6.6L LBZ Duramax (Includes Classic body style models)
• Installation Tip: Clean injector bores meticulously using a bronze brush kit. Always replace high-pressure fuel lines, hold-down clamps, and sealing O-rings upon installation to prevent high-pressure rail leaks.