Wehrli Custom Fabrication WCF100311-FB Upper Coolant Pipe Fire Brick

The Wehrli Custom Fabrication WCF100311-FB is a high-quality fabricated upper coolant pipe designed as a direct replacement for the factory plastic upper coolant pipe on GM Duramax diesel engines. Built to outlast the fragile OEM plastic components, this pipe is constructed from mandrel-bent aluminum tubing and finished in Wehrli's signature Fire Brick (FB) powder coat for long-lasting corrosion resistance and a clean, custom appearance under the hood.

Wehrli Custom Fabrication is renowned among diesel performance enthusiasts for producing precision-crafted components that combine improved durability with a show-quality finish. This upper coolant pipe is a popular upgrade for owners looking to eliminate the risk of cracked or leaking factory coolant pipes, particularly on higher-mileage or modified Duramax applications.

Key Features:

• Fabricated aluminum construction — superior strength over factory plastic OEM pipe
• Fire Brick (FB) powder coat finish for corrosion resistance and aesthetic appeal
• Mandrel-bent tubing ensures smooth, unrestricted coolant flow
• Direct OEM replacement — no cutting or modification required
• Designed and manufactured in the USA by Wehrli Custom Fabrication
• Compatible with GM Duramax diesel engine applications

Upgrade your cooling system with confidence using a Wehrli Custom Fabrication upper coolant pipe — built to handle the demands of daily driving, towing, and performance applications alike.