Upgrade the coolant reservoir on your 2011–2016 Chevrolet Silverado HD or GMC Sierra HD with the Wehrli Custom Fabrication OEM Placement Coolant Tank Kit in Gloss Black for the 6.6L LML Duramax diesel. This direct-replacement aluminum coolant tank installs in the stock location, providing far superior heat resistance and structural integrity compared to the factory plastic reservoir that's prone to cracking and coolant loss over time.
Wehrli fabricates the coolant tank from welded aluminum with a machined billet filler cap and precision fittings for leak-proof compatibility with your factory coolant hoses. The Gloss Black powder coat delivers a sharp, polished appearance under the hood and resists corrosion through years of high-temperature use. All installation hardware is included for a straightforward, bolt-on upgrade.
Key Features
- Fits: 2011–2016 Chevrolet Silverado 2500HD / 3500HD and GMC Sierra 2500HD / 3500HD with 6.6L LML Duramax diesel
- OEM placement coolant tank — installs directly in the factory reservoir location
- Welded aluminum construction — far stronger and more heat-resistant than OEM plastic
- Gloss Black powder coat — bold, clean finish that resists heat and corrosion
- Machined billet filler cap included
- Compatible with factory coolant hoses — direct bolt-on installation
- All hardware included for easy installation
- Made in the USA by Wehrli Custom Fabrication (WCFab)
- MPN: WCF100647-GB
A must-have upgrade for any 2011–2016 LML Duramax owner who wants reliable coolant system performance and a cleaner engine bay appearance. Pairs perfectly with other Wehrli cooling upgrades for a complete LML Duramax cooling system refresh.