Injector Fuel Return Line Seal 8 Pack, LML | 2011-2016

Injector Fuel Return Line Seal 8 Pack, LML | 2011-2016

This set of 8 injector fuel return line seals is for the 6.6L Duramax LML. Each seal goes where the fuel return (leak-off) line connects to the injector, and there is one seal per injector, so a single pack covers all 8. These seals should be replaced any time the return lines come off, including during injector replacement. A reused or hardened seal can let diesel seep onto the top of the engine.

Key Features

• 8 injector fuel return line seals, one per injector
• Sized for the LML injector return line connection
• Also called leak-off line seals
• 8 required per engine; one pack does the job

Benefits

Return line seals take heat and fuel exposure on top of the engine and lose their seal once they've been disturbed. With all 8 in one pack, every injector gets a fresh seal during an injector or valve cover job, with no single seal left as the weak point. Replace if worn or damaged. Commonly replaced at the same time: Injector Body Seal 8 Pack | 2011 - 2016, Fuel Injector Hold Down Bracket Bolt.

Frequently Asked Questions

How many seals do I need?
One per injector, so 8 per engine. This pack includes all 8.

Can I reuse the old seals?
We don't recommend it. Once a seal has been heat-cycled and the line removed, it often won't reseal, and a small fuel leak on top of the engine is hard to track down later.

Is a special tool needed to pull LML injectors?
Our Fuel Injector Removal Tool Kit, Duramax | 2011 - 2016 makes a stuck LML injector much easier to remove without damaging the injector or the head.

Fitment

Fits 2011-2016 Chevrolet Silverado and GMC Sierra 2500HD and 3500HD with the 6.6L Duramax LML. 8 seals required per engine. For 2004.5-2010 LLY, LBZ and LMM trucks, use the Injector Fuel Return Line Seal - 8 Pack, Duramax | 2004.5 - 2010.

What's Included

• (8) Injector fuel return line seals

For warranty information or to submit a claim, see our Warranty Form.