Chevrolet 3500 Coolant Tank Kit - Wehrli - OEM Placement - Bronze Chrome - 17-19. This replacement coolant reservoir is a direct-fit fabricated aluminum unit designed to mount in the OEM coolant tank location for 2017–2019 Chevrolet 6.6L L5P Duramax 3500 applications. It swaps the aging plastic reservoir for a durable, serviceable aluminum tank finished in bronze chrome.

The Wehrli tank addresses common issues with stock reservoirs — clouding, yellowing, and non-serviceable sensors — by providing a high-quality, powder-coated aluminum tank with a serviceable float-type low coolant sensor and a billet aluminum sight glass. Built to replace original GM assemblies, the unit includes installation hardware and an anodized billet cap for a finished under-hood look. It’s a practical upgrade for enthusiasts who want improved longevity and easier sensor serviceability without modifying the original mounting points.

Features

• Fabricated aluminum construction with bronze chrome powder coat
• OEM placement mounting — direct fit for 2017–2019 6.6L L5P Duramax (3500)
• Serviceable float-type low coolant level sensor
• Billet aluminum coolant level sight glass and black anodized cap
• Includes installation hardware; made in USA; replaces GM PN 84257137, 84214124, 84138913, 84174037

If you have questions or want help confirming fitment, call us directly — we’re happy to help: 512-982-9393 (TX) or 562-981-6800 (CA). We have two locations offering installation and customization services in Austin, Texas and the Los Angeles, California area. If you’re considering multiple items, contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov