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Thoroughbred Diesel has been your online performance headquarters since 2002. We know how to get the most performance out of your pickup truck and offer all of today's most popular diesel performance products.
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Thoroughbred Diesel offers OEM and diesel stock parts for your diesel pickup truck. At Thoroughbred Diesel, you can buy stock diesel replacement parts such as injectors, fuel pumps, ball joints, track bars, turbos, and more for your diesel truck.
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Thoroughbred Sku #: DOR904-123 Manufacturer Sku #: 904-123
Year/Make/Model: {{year}} {{make.Name}} {{model.Name}} Edit
$95.95
2004 - 2010 Chevy Silverado 2500
2004 - 2010 Chevy Silverado 3500
2004 - 2010 GMC Sierra 2500
2004 - 2010 GMC Sierra 3500
Product Name: Dorman Products Left Diesel Return Line 2004.5-2010 GMC 2500/3500 Duramax 6.6L Manufacturer: Dorman Products Manufacturer Part #: 904-123 Thoroughbred Diesel Part #: DOR904-123
The Dorman 904-123 Driver Side Fuel Injector Return Line for your 2004.5-2010 GM 6.6L Duramax is an affordable option to the factory replacement. Dormans Fuel Injector Line restores proper operation of your fuel injection system. These should be replaced when installing new injectors to avoid any leaks. Fits driver side (left).