Wehrli Custom Fabrication WCF100860-BB Upper Coolant Pipe Duramax - LB7/LLY Gloss Black

The Wehrli Custom Fabrication Upper Coolant Pipe is a direct replacement for the factory rubber coolant hose found on 2001-2005 GM Duramax LB7/LLY engines. This performance upgrade transforms your engine bay with a durable aluminum pipe finished in a custom Gloss Black powder coat.

Key Features:

• Heavy-duty 14-gauge aluminum construction for superior strength and resistance to crushing during clamp installation
• Custom Gloss Black powder coat finish applied in-house for a professional, show-quality appearance
• Includes premium silicone boots and stainless steel T-bolt clamps for secure, leak-free connections
• Direct replacement for GM part numbers 15792832 and 15198345
• Made in the USA with precision fabrication and quality materials

This coolant pipe upgrade eliminates the unsightly factory rubber hose while maintaining optimal cooling system performance. The heavier 14-gauge aluminum wall thickness prevents denting and kinking when tightening clamps, ensuring reliable long-term performance. Note that this LB7/LLY pipe does not include a WCFab badge and is designed to work with the OEM-style hard pipe from the thermostat housing.