Dieselr Coolant Return Plug Rear Engine Cover Duramax LML 6.6L (2011-2016)

Coolant Return Plug – Rear Engine Cover for 6.6L LML

The Dieselr Coolant Return Plug Rear Engine Cover Duramax LML 6.6L (2011-2016) is a direct-fit sealing solution designed for the rear engine cover coolant return port on LML platforms. Engineered specifically for 6.6L Duramax LML applications, this plug provides secure closure when reconfiguring or servicing the cooling system.

Manufactured for proper thread engagement and sealing integrity, it maintains coolant system stability without introducing unnecessary complexity.

Platform Fitment

• 2011-2016 Chevrolet Silverado 2500HD 6.6L Duramax LML
• 2011-2016 Chevrolet Silverado 3500HD 6.6L Duramax LML
• 2011-2016 GMC Sierra 2500HD 6.6L Duramax LML
• 2011-2016 GMC Sierra 3500HD 6.6L Duramax LML

Confirm engine code prior to ordering. This component is specific to LML rear engine cover configuration.

Engineering Overview

Application-Specific Fitment

Designed to match the rear engine cover coolant return port dimensions found on 2011-2016 LML engines.

Secure Sealing Surface

Provides consistent thread engagement and sealing to prevent coolant leakage when properly installed.

Service and Build Use

Intended for cooling system service, modification, or reconfiguration where the return port requires closure.

Installation Notes

• Direct-fit plug for rear engine cover coolant return port
• Use appropriate thread sealant where required
• No tuning or calibration changes required

Installer is responsible for confirming correct torque and coolant system bleed procedure.

Support

Dieselr selects platform-correct components that maintain cooling system integrity. Confirm overall configuration before proceeding.

Built to work the way it should.