Wehrli 100860 Upper Coolant Pipe Kit | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Features:

• Fits 2001-2005 6.6L Duramax LB7 and LLY
• Replaces factory rubber upper coolant hose
• Durable aluminum construction for long life
• Includes silicone boots and T-bolt clamps
• Powder coated in color of your choice
• Improves reliability and heat resistance
• Provides clean, custom engine bay look
• Direct fit, easy to install design

Upgrade Cooling and Clean Up Your Engine Bay

If you’re still relying on the factory rubber upper coolant hose on your 2001–2005 Duramax, the Wehrli 100860 Upper Coolant Pipe Kit is an upgrade worth making. Designed specifically for LB7 and LLY engines, this high-quality aluminum pipe eliminates the risk of hose deterioration and collapse that can come with age or high heat. It replaces the stock rubber hose with a rigid, durable aluminum option that not only improves long-term reliability but also brings a much cleaner, finished look to your engine bay. Wehrli offers this pipe powder coated in the color of your choice, giving you the freedom to match or highlight your engine’s appearance.

Complete Kit with Easy Installation

The kit comes ready to install with everything you need, including silicone boots and heavy-duty T-bolt clamps for a secure, leak-free fit. Whether you’re performing preventative maintenance or chasing a more custom look under the hood, this coolant pipe offers both function and style. It’s a direct replacement, meaning no cutting or modifications are required. While this particular version does not include the WCFab badge found on later model kits, it still delivers the same level of craftsmanship and performance you expect from Wehrli. It’s a simple, worthwhile upgrade for any LB7 or LLY owner looking to extend cooling system life and add a little extra visual appeal.

Fits: 2001, 2002, 2003, 2004, 2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax