GMC Sierra 3500HD Upper Coolant Pipe - Wehrli - Aluminum - Bengal Grey - 2011–2016. This Wehrli Custom Fab pipe replaces the factory rubber upper coolant hose on LML Duramax models and features a durable Bengal Grey powder-coated finish.

Built for the demands of the LML platform, this aluminum upper coolant pipe adds rigidity and heat resistance to the cooling circuit, helping maintain consistent flow while avoiding the swelling and softness that can occur with aged rubber hoses. It is engineered for use with the OEM GM radiator; some aftermarket radiators may cause fitment issues. The kit includes high-temp silicone boots and T-bolt clamps for a strong, serviceable connection. Direct fit for 2011–2016 GMC Sierra 3500HD equipped with the LML Duramax.

Features

• Aluminum construction
• Single-stage Bengal Grey powder coat
• Direct replacement for OEM rubber upper hose
• Designed for 2011–2016 LML Duramax with OEM radiator
• Includes silicone boots and T-bolt clamps
• Note: some aftermarket radiators may affect fitment

Whether you’re refreshing aging components or planning your next round of mods, this piece offers reliable function and a clean under-hood look. Have questions or need guidance? Call us directly at 512-982-9393 (TX) or 562-981-6800 (CA). We have locations in Austin, Texas and the Los Angeles, California area where we offer installation and customization services.

Thinking about purchasing multiple items? Contact us for shipping discounts.

We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov