2001-2004.5 GM/CHEVROLET 6.6L DURAMAX LB7 FUEL RAIL RETURN LINE GASKETS KIT (ONE BANK)
Prevent fuel leaks and restore proper fuel return system sealing with this Fuel Rail Return Line Gasket Kit designed for 2001–2004.5 GM/Chevrolet 6.6L Duramax LB7 engines. These gaskets are located on the return lines that sit atop each fuel rail and are a common source of fuel seepage as they degrade over time. The gaskets should be replaced any time the fuel injectors are serviced.
This kit includes high-quality replacement seals manufactured to meet or exceed OEM specifications. It is an ideal solution when servicing the fuel return line, replacing injectors, or addressing leaks in the upper fuel rail area.
Features & Benefits:
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Direct-fit gasket kit for 6.6L LB7 Duramax engines
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Seals fuel return fittings to prevent leaks and seepage
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High-temperature and diesel-resistant construction
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Ideal for use during injector or fuel rail service
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OEM-quality fitment ensures no fuel system re-torquing issues
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Designed for long service life under high-pressure conditions
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Eliminates air intrusion and restores fuel pressure stability
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Essential maintenance item for aging LB7 trucks
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Compatible with factory or aftermarket fuel rails
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Cost-effective solution to avoid drivability and emissions issues
Truck Compatibility / Applications:
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2001 Chevrolet Silverado 2500HD / 3500 6.6L Duramax LB7
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2002 Chevrolet Silverado 2500HD / 3500 6.6L Duramax LB7
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2003 Chevrolet Silverado 2500HD / 3500 6.6L Duramax LB7
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2004 (early build) Chevrolet Silverado 2500HD / 3500 6.6L Duramax LB7
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2001 GMC Sierra 2500HD / 3500 6.6L Duramax LB7
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2002 GMC Sierra 2500HD / 3500 6.6L Duramax LB7
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2003 GMC Sierra 2500HD / 3500 6.6L Duramax LB7
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2004 (early build) GMC Sierra 2500HD / 3500 6.6L Duramax LB7
Not compatible with 2004.5+ LLY models
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✔️ Orders placed on weekends or holidays will be processed on the next business day.
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California Proposition 65 Warning:
This product may expose you to chemicals including diesel engine exhaust and petroleum-based materials, known to the State of California to cause cancer and reproductive harm.
For more information, visit: www.P65Warnings.ca.gov
OEM : 97251046, 97251047
