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Wehrli 17-19 Chevrolet 6.6L L5P Duramax OEM Placement Coolant Tank Kit - Gloss Black
Replace the factory plastic coolant overflow tank on your 2017–2019 Chevrolet Silverado HD or GMC Sierra HD with the Wehrli Custom Fabrication OEM Placement Coolant Tank Kit in Gloss Black, purpose-built for the 6.6L L5P Duramax diesel. Wehrli's aluminum coolant tank fits directly in the stock location, offering greater durability and heat resistance than the OEM plastic unit — helping protect your Duramax cooling system for years to come.
The Gloss Black powder coat gives this tank a bold, polished look that complements any engine bay color scheme. It's fabricated from welded aluminum with machined billet fittings, ensuring a leak-proof, long-lasting connection to your factory coolant hoses. All necessary installation hardware is included for a simple bolt-on upgrade.
Key Features
- Fits: 2017–2019 Chevrolet Silverado 2500HD / 3500HD and GMC Sierra 2500HD / 3500HD with 6.6L L5P Duramax diesel
- OEM placement coolant tank — direct bolt-in replacement for the factory reservoir
- Welded aluminum construction — far superior to the OEM plastic tank
- Gloss Black powder coat — eye-catching finish that resists heat and corrosion
- Billet machined filler cap included
- Easy bolt-on installation — all hardware included
- Made in the USA by Wehrli Custom Fabrication (WCFab)
- MPN: WCF100433-GB
Whether you're towing daily, running a modified power level, or simply want to ditch the fragile OEM plastic coolant tank, the Wehrli aluminum coolant tank kit is an excellent, long-lasting upgrade for your 2017–2019 L5P Duramax.