2011-2016 GM 6.6L DURAMAX LML LGH NEW BOSCH REGULATED FUEL RETURN LINE ASSEMBLY
The Bosch Regulated Fuel Return Line Assembly is a critical fuel system component designed for 2011-2016 GM/Chevrolet 6.6L Duramax LML and LGH engines. This high-quality, brand-new fuel return line ensures proper fuel pressure regulation and return flow, optimizing diesel engine performance and efficiency. Engineered to meet or exceed OEM standards, this assembly is a direct replacement for worn or leaking fuel return lines, restoring the fuel system’s integrity and preventing leaks that could lead to engine inefficiencies or damage.
Manufactured with premium materials for superior heat and chemical resistance, this regulated return line is built to withstand the rigors of high-pressure diesel injection systems. It ensures consistent fuel pressure delivery to maintain optimal combustion efficiency and engine longevity. Perfect for replacing faulty or deteriorating return lines, this Bosch fuel return line assembly is the ideal solution for maintaining peak Duramax performance.
Key Benefits:
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Restores Proper Fuel Regulation – Ensures optimal fuel return and pressure control for improved efficiency.
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OEM Direct Replacement – Designed to match factory specifications for a perfect fit and hassle-free installation.
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Prevents Fuel Leaks – Helps maintain a leak-free fuel system, reducing the risk of performance loss or damage.
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High-Quality Construction – Built from durable, heat-resistant materials for extended service life.
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Improves Engine Performance – Supports smooth fuel delivery for consistent power and fuel efficiency.
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Reduces Injector Wear – Maintains proper fuel pressure to extend the lifespan of injectors.
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Enhances Fuel Economy – Prevents fuel loss and inefficiencies for better mileage.
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Easy Installation – Pre-assembled and ready to install with minimal effort.
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Compatible with Bio-Diesel – Safe for use with ULSD and biodiesel blends.
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Reliable Bosch Engineering – Manufactured by Bosch, a trusted leader in diesel fuel systems.
Vehicle Compatibility
This Regulated Fuel Return Line Assembly is compatible with the following 6.6L Duramax LML & LGH Diesel models:
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2011-2016 Chevrolet Silverado 2500HD 6.6L Duramax LML
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2011-2016 Chevrolet Silverado 3500HD 6.6L Duramax LML
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2011-2016 GMC Sierra 2500HD 6.6L Duramax LML
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2011-2016 GMC Sierra 3500HD 6.6L Duramax LML
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2011-2016 Chevrolet Express 6.6L Duramax LGH
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2011-2016 GMC Savana 6.6L Duramax LGH
This assembly serves as a direct replacement for OEM Part Numbers: 12651991, 12662659, 12665993, 12677610.
The 2011-2016 GM/Chevrolet 6.6L Duramax LML LGH Bosch Regulated Fuel Return Line Assembly is an essential component for maintaining fuel system integrity and performance. Designed as a direct OEM replacement, this fuel return line assembly prevents leaks, ensures proper pressure regulation, and supports optimal engine efficiency. Made with high-quality, heat-resistant materials, it delivers long-lasting durability and reliable performance. Whether replacing a failing component or upgrading for better fuel management, this Bosch fuel return line assembly is a cost-effective solution for keeping your Duramax engine running at peak performance.
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**⚠California Proposition 65 Warning: Diesel engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects, and other reproductive harm.
Visit: www.p65warnings.ca.gov
