2011-2016 LML 6.6L Duramax Upper Coolant Pipe

This aluminum upper coolant pipe replaces the OEM rubber upper coolant hose on 2011-2016 LML 6.6L Duramax trucks. It is finished in a custom powder coat color and is built for use with the OEM GM radiator; some aftermarket radiators may cause fitment issues.

Why Replace the OEM Coolant Hose

The factory upper coolant hose is a rubber piece that ages and discolors over time. This aluminum pipe dresses up the engine bay with a custom powder coat finish, using silicone boots and stainless steel T-bolt clamps at the connections.

What Comes in the Kit

• Aluminum upper coolant pipe
• Silicone boots
• Stainless steel T-bolt clamps

Cross-Reference

This pipe replaces GM part numbers 22884211, 25874337, and 23455292.

Common Ordering Mistakes

• Installing on an aftermarket radiator without confirming fitment
• Assuming this fits an engine outside the 2011-2016 6.6L LML Duramax range
• Ordering a pipe color that does not match other installed WCFab components

Final Order Check

• Confirm your truck is a 2011-2016 GM 6.6L LML Duramax
• Confirm your radiator is the OEM GM radiator or a confirmed-compatible aftermarket unit
• Select your preferred powder coat color before ordering

This pipe is the correct upper coolant hose upgrade for a 2011-2016 LML Duramax running the OEM GM radiator.

Frequently Asked Questions