Wehrli Custom Fabrication 100742-RED L5P Upper Coolant Pipe Kit - Illusion Cherry

The Wehrli Custom Fabrication L5P Upper Coolant Pipe Kit (WCF100742) is a premium fabricated aluminum hard pipe designed to replace the factory OEM rubber upper radiator hose on L5P Duramax-equipped trucks. This direct-replacement aluminum pipe reroutes coolant from the top of the thermostat housing straight to the radiator, eliminating the restrictive factory routing path over the engine. The result is a cleaner, more professional-looking engine bay with durable, long-lasting aluminum construction.

This kit is finished in WCFab's signature Illusion Cherry two-stage custom powder coat — a deep, color-shifting red finish that adds a bold, custom look under the hood. The WCFab logo is laser-etched into the pipe and presented in a brushed aluminum finish on single-coat colors, providing an unmistakable mark of quality craftsmanship.

Kit Includes:

• Fabricated aluminum coolant pipe
• Silicone boots
• T-bolt clamps
• Custom Illusion Cherry powder coat finish

Key Features:

• Replaces the OEM rubber upper coolant hose with a rigid aluminum hard pipe
• Reroutes coolant directly from the thermostat housing to the radiator
• Custom two-stage Illusion Cherry powder coat finish
• WCFab logo in brushed aluminum finish
• Designed for use with OEM GM radiator
• Made in the USA

Note: Designed for use with the OEM GM radiator. Aftermarket radiators may cause fitment issues.