Wehrli 100645 OEM Placement Coolant Tank Kit | 2001-2007 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Features:

• Fits 2001-2007 Duramax 6.6L trucks
• Mounts in factory coolant tank location
• Fabricated aluminum construction for durability
• Powder coated for corrosion resistance and style
• Includes billet anodized aluminum cap
• Comes with low coolant level sensor
• Integrated sight glass for fluid visibility
• Includes overflow hose and all mounting hardware
• Uses OEM mounting points for easy install
• No other modifications required
• Installs with basic hand tools
• Improves engine bay appearance and reliability

Give Your Duramax A Cleaner More Durable Upgrade

If your factory coolant reservoir is starting to look tired and stained, the Wehrli OEM Placement Coolant Tank Kit is the clean upgrade your 2001-2007 Duramax has been waiting for. Built to drop into the stock location with no modifications needed, this tank immediately transforms your engine bay with a custom, powder-coated aluminum finish that looks as good as it performs. It replaces the dull plastic tank with a much tougher and more refined aluminum version that resists heat, staining, and cracking over time. The included billet black anodized cap adds a sleek touch while the built-in sight glass gives you a quick view of your coolant level without popping the cap. It also includes an integrated low coolant sensor and all the hardware you need to get it bolted in with basic hand tools. Whether you're going for a show-ready engine bay or just want to clean up and strengthen a high-wear component, this kit checks all the boxes. Simple, stylish, and functional, this is an upgrade that lasts.

Built For Direct Fitment With Long Term Reliability

The Wehrli 100645 Coolant Tank Kit is designed for 2001-2007 GM Silverado and Sierra 2500HD/3500HD models equipped with the 6.6L Duramax engine, offering a durable and functional replacement for the factory coolant reservoir. Fabricated from powder-coated aluminum, this tank is built to withstand heat and vibration while resisting corrosion and long-term wear far better than OEM plastic tanks. It mounts directly to the stock location using the original hardware points, ensuring a straightforward installation with no modifications required. The kit includes a low coolant level sensor and an integrated sight glass, allowing for easy visual fluid checks and built-in monitoring for system safety. A black anodized billet aluminum cap provides a secure seal and a refined appearance, while the overflow hose and included hardware ensure everything is ready to go out of the box. This tank is compatible with stock configurations and is ideal for trucks in both work and performance applications. It combines visual appeal with practical function, making it a smart investment for long-term durability and convenience.

Fits: 2001, 2002, 2003, 2004, 2005, 2006, 2007 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Notes:

• Designed specifically for 2001-2007 Duramax 6.6L trucks
• Mounts in the OEM coolant tank location
• Replaces the factory clear plastic coolant reservoir
• No additional modifications required for installation
• Utilizes factory mounting points for a precise fit
• Fabricated aluminum tank with durable powder-coated finish
• Includes billet black anodized aluminum cap
• Comes with low coolant level sensor pre-installed
• Coolant level sight glass allows for quick fluid checks
• Kit includes overflow hose and all necessary hardware
• Installs easily with basic hand tools