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 #: MATHDINJECTORRETURNLINEBOLT
Year/Make/Model: {{year}} {{make.Name}} {{model.Name}} Edit
With the shallow head on the stock bolt, it is common for the head to round out during removal. The MA Heavy Duty LB7 Injector Return Line Bolt has been redesigned to allow nearly double the tool engagement. Proper engagement of the Allen wrench is crucial for accurate torque during reassembly to avoid a fuel leak at the return line fitting. The unique head shape offers the needed strength while maintaining proper clearance on other engine components.