
01-04 GM 6.6L Duramax Dorman Return Line Gasket Kit
$18.31
- Part Number: 904-103
- Est. Ship Time: Usually Ships by Next Business Day

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Features & Benefits
Dorman’s Fuel Injection Return Line and Gasket effectively prevent leaks from forming between the fuel rails and fuel injectors. The gaskets should be replaced any time the fuel injectors are serviced.
• Protects against leaks that could cause fuel pressure to drop—and the subsequent engine damage that could occur
• Includes five gaskets, enough to service one engine bank. TWO KITS NEEDED PER ENGINE.
• Provides a fuel-tight fit
• A necessary safety item for preventing fuel leaks
OE #: 97228933 / 97600925
Dorman Part number: 904-103

Features & Benefits
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Features & Benefits
Dorman’s Fuel Injection Return Line and Gasket effectively prevent leaks from forming between the fuel rails and fuel i..
$18.31
Discontinued (1/21/2025).
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Fuel Return Line Banjo Bolt
OEM Part Number: 97228929
Year Range: Engine:
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Power Steering Line Kit, LB7/LLY/LBZ/LMM, 2001-2010
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Included in this base kit:
GM Grade C Right and Left Head Gaskets
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Replace these when removing the rear engine cover to block. Seals water jackets.
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This fuel water separator drain valve is designed to match the fit and function of the original valve on specified vehicles, and is engineered for dur..
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Wheel hub bolts stripped, bent or seized? These wheel hub bolts directly replace the original bolts on certain vehicle years, makes and models.
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Replacing a drive shaft doesn't have to be complicated. This complete drive shaft assembly is pre-balanced and ready to install with 100% new yokes, t..
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Fuel lines on certain Ford and International vehicles leak due to vibration from a weak bracket. This Dorman OE FIX upgrades the bracket to prevent fu..
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This replacement engine coolant thermostat housing is engineered to match the fit and durability of the stock thermostat housing on specified vehicles..
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Original equipment brake lines are highly rust prone. This Dorman OE FIX brake hydraulic line kit is made of upgraded stainless steel to resist corros..
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Fits: 2001-2004 GM 6.6L Duramax
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This transmission range sensor is designed to match the fit and function of the original sensor on specified vehicles, and is engineered for durabilit..
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