Login
My Account
My Cart
The site navigation utilizes arrow, enter, escape, and space bar key commands. Left and right arrows move across top level links and expand / close menus in sub levels. Up and Down arrows will open main level menus and toggle through sub tier links. Enter and space open menus and escape closes them as well. Tab will move on to the next part of the site rather than go through menu items.
Enter your truck info so we can recommend the right products for you.
Can't find it? Call us at 859-737-4966 for free advice.
Menu
Injection Pump
Injector
Programmers
Turbo Charger
Banners
Decals
Hats
Hoodies
License Plates
Shirts
Tank Tops
Show your support with a Thoroughbred Diesel t-shirt, sweatshirt, or sticker decal.
Thoroughbred Sku #: DOR904-123 Manufacturer Sku #: 904-123
Year/Make/Model: {{year}} {{make.Name}} {{model.Name}} Edit
$118.95
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).