Engineered specifically for 2004.5 through 2010 Chevrolet Silverado and GMC Sierra 2500HD/3500 trucks powered by the 6.6L Duramax V8 turbo diesel engine (LLY, LBZ, and LMM codes), the BD Diesel Common Rail Fuel Rail Plug (Part # 1050071) permanently replaces the factory spring-loaded pressure relief valve. Under high-performance tuning, heavy towing, or aggressive wide-open throttle, factory relief valve springs fatigue and unseat prematurely, causing power-robbing rail pressure drops and P0087 low-pressure trouble codes.

The BD solid fuel plug seals the common rail completely, maintaining up to 30,000 psi of commanded fuel rail pressure under maximum engine load. This simple upgrade improves cold starting, eliminates rail pressure leaks, and ensures your CP3 injection pump supplies uninhibited fuel flow directly to the injectors with zero core charge.

Key Features & Benefits

• Eliminates Rail Pressure Drops: Replaces weak factory spring valves to prevent premature fuel bleeding under heavy acceleration and high boost.
• Seals 30,000+ PSI: Engineered from solid barstock to lock in extreme common-rail pressures safely and dependably.
• Improves Engine Starting: Cures hard-start conditions caused by leaking or unseated factory pressure relief valves.
• 50-State Emissions Legal: CARB compliant and legal for use across all 50 states (E.O. pending/exempt where applicable).
• Zero Core Charge: Brand-new outright performance upgrade requiring no core deposit or core return shipping.

Technical Specifications

• Manufacturer / Brand: BD Diesel Performance
• Manufacturer Part Number / SKU: 1050071
• UPC / GTIN: 990011404235
• Product Type: Common Rail Fuel Rail Plug / Pressure Relief Valve Block-Off
• Material Composition: Heavy-Duty Machined Steel Barstock
• Pressure Rating: Up to 30,000+ PSI Common Rail Pressure
• Emissions Status: 50-State Legal
• Truck Compatibility: 2004.5–2010 GM Duramax (LLY, LBZ, LMM) & 2007.5–2018 Dodge Ram 6.7L Cummins
• Core Requirement: None
• Warranty: BD Diesel 1-Year Limited Warranty

Vehicle Fitment & Technical Installation Notes

• 2004.5–2005 GM 2500HD / 3500 Duramax 6.6L (LLY)
• 2006–2007 GM 2500HD / 3500 Duramax 6.6L (LBZ Classic)
• 2007.5–2010 GM 2500HD / 3500 Duramax 6.6L (LMM)
• 2007.5–2018 Dodge Ram 2500 / 3500 / 4500 / 5500 6.7L Cummins
• Installation Tip: Relieve all high-pressure fuel system residual pressure completely before unthreading the factory relief valve. Clean the fuel rail threads meticulously to keep debris out of the common rail. Torque the BD 1050071 fuel rail plug securely to 70 ft-lbs during installation.