GM OE Fuel Injector Return Line Seal for L5P Chevrolet/GMC 6.6L Duramax Trucks. Essential for maintaining fuel system integrity, these fuel injector return line seals prevent leaks and ensure optimal engine performance. These are a must-have for performing fuel injector replacement and/or service.
Please note: Each return line requires eight seals. Sixteen seals would be required to work on both sides of the engine.
Durable Copper Construction
Prevent fuel leaks from occurring at fuel injector and return line connection points