WEHRLI CUSTOM FAB WCF100646 2007.5-2010 LMM DURAMAX OEM PLACEMENT COOLANT TANK KIT

Product Description

wehrli custom fab wcf100646, lmm duramax coolant tank kit, 2007.5-2010 duramax coolant reservoir upgrade, aluminum coolant tank duramax, gm duramax expansion tank replacement, billet coolant tank kit, heavy duty duramax coolant overflow tank

The WEHRLI CUSTOM FAB WCF100646 2007.5-2010 LMM DURAMAX OEM PLACEMENT COOLANT TANK KIT is a premium replacement for the factory plastic coolant reservoir used on LMM Duramax trucks. The OEM tank is known for discoloration, cracking, and deterioration over time due to heat cycles and engine bay stress. Wehrli Custom Fab engineered this aluminum replacement tank to provide superior durability while maintaining the factory mounting location and hose routing.

This kit replaces the fragile factory reservoir with a fabricated aluminum coolant tank designed for long-term reliability and improved engine bay appearance. The direct OEM-placement design means installation is straightforward with no major modifications required. For Duramax owners who want reliability and a cleaner engine bay, this upgrade offers a strong combination of performance, durability, and premium fabrication quality.

Each kit includes the aluminum reservoir, mounting hardware, and all required fittings for a clean and professional installation. The tank is engineered to maintain proper coolant expansion and return flow while offering significantly improved strength compared to the factory plastic unit.

Key Features:

• Direct replacement coolant tank for 2007.5-2010 LMM Duramax
• Maintains OEM mounting location and hose routing
• Fabricated aluminum construction for long-term durability
• Improves engine bay appearance and reliability
• Designed to eliminate common plastic tank cracking issues
• Precision welded construction
• Simple bolt-on installation
• Made in the USA

Fitment:

• 2007.5 Chevrolet Silverado 2500HD / 3500HD – 6.6L Duramax LMM
• 2008 Chevrolet Silverado 2500HD / 3500HD – 6.6L Duramax LMM
• 2009 Chevrolet Silverado 2500HD / 3500HD – 6.6L Duramax LMM
• 2010 Chevrolet Silverado 2500HD / 3500HD – 6.6L Duramax LMM
• 2007.5 GMC Sierra 2500HD / 3500HD – 6.6L Duramax LMM
• 2008 GMC Sierra 2500HD / 3500HD – 6.6L Duramax LMM
• 2009 GMC Sierra 2500HD / 3500HD – 6.6L Duramax LMM
• 2010 GMC Sierra 2500HD / 3500HD – 6.6L Duramax LMM

What’s Included:

• Fabricated aluminum coolant reservoir
• Mounting brackets
• Installation hardware
• Coolant fittings and connections

FAQ

Why replace the factory coolant tank on an LMM Duramax?

The factory plastic coolant reservoir can become brittle over time due to heat cycles. This aluminum tank eliminates cracking issues and offers significantly greater durability.

Does this coolant tank install in the factory location?

Yes. The WCF100646 is designed to mount in the OEM coolant tank location using factory mounting points.

Does this kit require modifications to install?

No major modifications are required. The tank is designed as a direct-fit replacement with included mounting hardware.

Is this coolant tank compatible with stock or modified trucks?

Yes. This reservoir works with both stock trucks and modified Duramax builds while maintaining proper coolant expansion function.

Is the tank powder coated?

Most Wehrli coolant tanks are available in multiple finishes including raw aluminum and powder coated options depending on supplier availability.