Everything needed to replace those lines are included with this kit! If you have experienced a leak with yours, here is your fix.
Fleece FPE-LML-CP Duramax LML Rear Engine Cover Coolant Return Plug
Fleece Performance Rear Engine Cover Coolant Return Plug for 11-15 Duramax LML
Fleece Performance Duramax LML Rear Engine Cover Coolant Return Plug
Fleece Performance FPE-LML-CP3-WP GM 2500/3500 Duramax LML CP3 Conversion Kit w
Fleece Performance FPE-LML-CP3-NP GM 2500/3500 Duramax LML CP3 Conversion Hardw
