Wehrli Custom Fabrication WCF100541-GM Upper Coolant Pipe Kit L5P Duramax 2020-2026

The Wehrli Custom Fabrication WCF100541-GM Upper Coolant Pipe Kit is a direct-fit aluminum upgrade designed to replace the factory OEM rubber upper radiator hose on 2020–2026 L5P 6.6L Duramax-powered GM HD trucks. Built to WCFab's exacting standards, this kit delivers improved durability and a clean, custom appearance under the hood.

WCFab's coolant pipes are constructed from fabricated aluminum with beaded and rolled ends for a secure, leak-free connection. The result is a hard-pipe solution that outlasts the stock rubber hose while giving your engine bay a professional, finished look in your choice of custom powder coat color.

Kit Includes:

• Fabricated aluminum upper coolant pipe
• Silicone boots for secure sealing at both ends
• T-bolt clamps for a tight, reliable connection
• Custom powder coat finish of your choice

Available Powder Coat Colors:

• WCFab Red, WCFab Grey, Illusion Purple, Bronze Chrome, Candy Teal, Bengal Red, Gloss White, and Gloss Black — in stock and ready to ship
• Additional custom colors available with extended lead time

Made in the USA by Wehrli Custom Fabrication, a trusted name in high-performance diesel upgrades. This kit is a straightforward bolt-on installation and is an ideal complement to other WCFab coolant system upgrades including their OEM Placement Coolant Tank Kit.