Wehrli Custom Fabrication WCF100860-KIWI Duramax Upper Coolant Pipe Kiwi Green

The Wehrli Custom Fabrication WCF100860-KIWI is a direct-fit aluminum upper coolant pipe designed for the 2001–2005 Chevrolet Silverado and GMC Sierra equipped with the 6.6L LB7 or LLY Duramax diesel engine. This upgrade replaces the factory OEM rubber upper coolant hose with a durable 14-gauge aluminum pipe finished in a striking Kiwi Green custom powder coat — a bold, show-quality look under the hood.

Engineered and fabricated in the USA by Wehrli Custom Fabrication (WCFab), this coolant pipe delivers a significant improvement in durability and aesthetics over the stock rubber hose. The included silicone boots and stainless steel T-bolt clamps ensure a leak-free, secure connection that holds up to the demands of high-performance diesel use.

Kit Includes:

• 14-gauge aluminum upper coolant pipe
• Silicone boots
• Stainless steel T-bolt clamps
• Kiwi Green custom powder coat finish

Key Features:

• Direct OEM replacement for the factory rubber upper coolant hose
• Heavy-duty 14-gauge aluminum construction for long-lasting performance
• Stainless steel T-bolt clamps provide a secure, leak-free seal
• Durable custom powder coat finish in Kiwi Green
• Made in the USA by Wehrli Custom Fabrication
• Note: This pipe does not include a WCFab badge, unlike other model-year coolant pipes

WCFab's upper coolant pipes are a popular upgrade among Duramax diesel enthusiasts looking to replace aging rubber hoses while adding a custom, color-coordinated appearance to their engine bay.