Engineered specifically for 2006 through 2010 Chevrolet Silverado and GMC Sierra 2500HD/3500 trucks powered by the 6.6L Duramax V8 turbo diesel engine (LBZ and LMM codes), the Bosch Original Equipment Fuel Pressure Regulator (Part # 1465ZS0063 / 0928400673) controls high-pressure fuel volume delivered to the common rail. As the original equipment manufacturer (OEM) for the Duramax high-pressure fuel system, Bosch builds this regulator to exact factory specifications.

Over time, fuel contamination, high mileage, and electrical wear can cause the internal solenoid valve to stick or fluctuate, resulting in erratic idle surges, P0087 low rail pressure codes, and sudden engine stalling. Replacing the worn regulator with an authentic Bosch OE unit restores flawless fuel delivery control with zero core charge.

Key Features & Benefits

• Genuine Bosch Original Equipment: Manufactured by the original OE fuel system supplier to guarantee factory fit, form, and function.
• Resolves Rail Pressure Fluctuations: Eliminates erratic idle surging, hesitation, and diagnostic trouble codes (DTCs) related to fuel rail pressure control.
• Precision Solenoid Actuation: Delivers exact fuel metering to the injection pump for smooth combustion and optimal power output.
• Direct OE Replacement: Installs seamlessly into factory CP3 injection pump locations without requiring tuning modifications.
• Zero Core Charge: Brand-new outright OE replacement part requiring no core deposit or core return shipping.

Technical Specifications

• Manufacturer / Brand: Bosch (Original Equipment)
• Manufacturer Part Number / SKU: 1465ZS0063
• Alternative Part Numbers / Interchanges: 0928400673 / 97369850 / 97384667 / 904-572
• Product Type: Fuel Pressure Regulator (FPR) / Fuel Control Actuator
• Truck Platform: 2006–2010 GM 2500HD / 3500 Silverado & Sierra
• Engine Platform: 6.6L Duramax V8 Turbo Diesel (LBZ & LMM Codes)
• Core Requirement: None
• Warranty: Bosch Limited 1-Year Warranty

Vehicle Fitment & Technical Installation Notes

• 2006–2007 Chevrolet Silverado / GMC Sierra 2500HD / 3500 (LBZ) – 6.6L Duramax Diesel
• 2007.5–2010 Chevrolet Silverado / GMC Sierra 2500HD / 3500 (LMM) – 6.6L Duramax Diesel
• Fits Model Years: 2006, 2007, 2008, 2009, 2010
• Installation Tip: Disconnect the negative battery cables. Access the CP3 injection pump regulator location carefully. Clean around the mounting area to prevent any debris from entering the fuel system. Install the new Bosch 1465ZS0063 regulator with a light coating of clean diesel fuel on the O-rings and torque mounting screws evenly. Note: Pair with a new Fleece wiring harness (FPE-HAR-DMAX-FPR) if the original pigtail connector shows heat fatigue or corrosion.