2001-2004 Duramax Heavy Duty Injector Return Line Bolt (10491-X)

Duramax Heavy Duty Injector Return Line Bolt

The stock fuel injector return line bolt tends to round out during removal or installation due to its shallow head. To prevent this, use the redesigned MA Heavy Duty Duramax Fuel Injector Return Line Bolt with increased tool engagement. Properly engaging the Allen wrench is crucial for accurate torque to avoid fuel leaks during reassembly, and the unique head shape of LB7 bolts offers strength while maintaining clearance on other engine components. Be careful when removing these bolts, as they commonly become rounded and can cause leaks if not tightened correctly. Avoid expensive problems and future issues by replacing damaged bolts.

Part Number: 10491-1 / 10491-8