Wehrli WCF100696-GW Upper Coolant Pipe for 11-16 GM 6.6L LML Duramax

Vehicle Fitment

• 2011-2016 Chevrolet Silverado 2500/3500HD & GMC Sierra 2500/3500HD (6.6L LML Duramax)

Features

• Aluminum upper coolant pipe replaces OEM rubber hose
• Gloss white single-stage powder-coated finish - WCF100696-GW
• High-quality silicone boots for secure sealing
• Heavy-duty T-bolt clamps included
• Improves cooling system reliability vs stock components
• Precision bent for proper Duramax LML engine bay routing
• Durable powder coating resists corrosion and heat
• Direct bolt-on installation with factory mounting locations

Specifications

• Brand: Wehrli Custom Fabrication
• Part Number: WCF100696-GW
• Material: Aluminum with gloss white powder coat
• Finish: Gloss White (single-stage powder coat)
• Engine Compatibility: 6.6L Duramax LML
• Position: Upper radiator coolant pipe
• OEM Radiator Compatibility: Designed for use with GM OEM radiator
• Silicone Boots & T-Bolt Clamps: Included for leak-resistant seal

Included Components

• 1x Upper coolant pipe - Gloss white
• 2x High-quality silicone boots
• 2x Heavy-duty T-bolt clamps

Product Description

The Wehrli WCF100696-GW Upper Coolant Pipe is a custom aluminum replacement for the factory upper radiator hose on 2011-2016 GM 2500HD/3500HD trucks equipped with the 6.6L LML Duramax engine. Finished in gloss white powder coat, this coolant pipe not only enhances the visual appeal of the engine bay but also offers superior durability and longevity compared to the OEM rubber hose. Its precision bends and quality construction provide a direct bolt-on fit that improves coolant flow and reliability under demanding conditions.

Included silicone boots and heavy-duty T-bolt clamps ensure a secure and leak-resistant connection at each end. This upper pipe is engineered specifically for use with the OEM GM radiator, and while it may not perfectly align with some aftermarket radiators, it offers a reliable performance upgrade for stock cooling systems. Ideal for Duramax owners seeking both functional and aesthetic improvements over the stock hose, the WCF100696-GW brings strength and style to your cooling setup.