Duramax LML Rear Engine Cover Coolant Return Plug Fleece Performance Fuel Pump 7L diesel engine with enough

7L diesel engine with enough fuel for 600-900 HP aggressive tuning and high-performance fuel System upgrades

causing sludge and stiction

Injectors will support 700-750 RWHP with proper supporting modifications

This has now been simplified with our new bolt on brackets

Duramax LML Rear Engine Cover Coolant Return Plug Fleece Performance Fuel Pump 7L diesel engine with enoughWhether you're putting on an aftermarket turbo or deleting the EGR system on your LML, this coolant return plug will help you put the finishing touches on the job. The plug is made from high quality 6061 aluminum, anodized black, and laser etched with the Fleece Performace "F". It comes complete with a high temperature silicone o ring to ensure you won't have any leaks. Vehicle Fitments GMC Sierra 2500 HD 2011 to 2016 Chevrolet Silverado 2500 HD 2011