2001-2004.5 GM/CHEVROLET 6.6L DURAMAX LB7 RACING FUEL RAIL PLUG VALVE
Maximize fuel rail pressure and eliminate pressure relief valve leaks with this high-performance racing fuel rail plug valve designed for 2001–2004.5 GM/Chevrolet 6.6L Duramax LB7 engines. This plug replaces the factory pressure relief valve (PRV), which is prone to pressure bleed-off under heavy load or aggressive tuning. It ensures consistent fuel rail pressure during high-demand situations such as racing, towing, or tuned performance applications.
Constructed from precision-machined stainless steel components, this plug delivers reliability and strength in even the most demanding diesel environments. It’s an ideal upgrade for LB7 owners looking to improve throttle response, reduce injector rattle, and enhance overall fuel system efficiency.
Key Benefits:
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304 Stainless Steel Construction
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Eliminates P1093 DTC Code
- MADE IN THE USA!
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Increases and stabilizes fuel rail pressure under load
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Eliminates pressure relief valve leak-back issues
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Ideal for performance builds and tuned LB7 applications
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Prevents low-pressure codes and limp mode issues
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Enhances throttle response and injector consistency
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Precision-machined from high-strength materials
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Easy, drop-in installation—no tuning required
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Compatible with stock and aftermarket fuel systems
Vehicle Compatibility:
Make: Chevrolet / GMC
Engine: 6.6L Duramax LB7
Years and Models:
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2001–2004 Chevrolet Silverado 2500HD / 3500 (LB7)
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2001–2004 GMC Sierra 2500HD / 3500 (LB7)
Designed to support high-performance diesel applications, this racing fuel rail plug valve replaces a known weak point in the LB7 fuel system. Whether you're building a competition-ready truck or just want to prevent pressure drops and improve drivability, this plug delivers the reliability and consistency needed to maintain strong fuel delivery under any load.
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✔️ Orders are processed within 1 business day (Monday–Friday).
✔️ Orders placed on weekends or holidays will be processed on the next business day.
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✔️ Shipping to PO Boxes, APO/FPO may be limited based on carrier restrictions.
California Proposition 65 Warning:
This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Replaces Bosch Part#: 1-110-010-024
