GMC Sierra 3500 HD Coolant Tank Kit - Wehrli - OEM Placement - Brizzle Blue (2007.5–2010). This fabricated aluminum reservoir replaces the factory plastic unit on Duramax LMM trucks while retaining the stock mounting position.

Built by Wehrli Custom Fabrication, the tank features a durable Brizzle Blue powder coat, a billet aluminum sight glass for quick level checks, and a black anodized CNC-machined cap. It installs in the OEM location using factory mounting points on stock vehicles, with no other modifications required. The kit includes mounting hardware, overflow hose, and a low-coolant sensor, and it replaces GM part number 15120611. Made in the USA and designed for 2007.5–2010 Silverado/Sierra 2500/3500 HD with the 6.6L Duramax LMM.

Features

• Direct OEM placement for 2007.5–2010 GM Duramax LMM (Silverado/Sierra 2500/3500 HD)
• Fabricated aluminum construction
• Brizzle Blue custom powder coat
• Black anodized CNC-machined billet cap
• Integrated coolant level sight glass
• Low coolant level sensor included
• Overflow hose and mounting hardware included
• Installs with basic hand tools

Whether replacing an aging reservoir or adding a clean, durable upgrade, this kit offers a factory-fit solution and straightforward installation. Questions or need help planning your build? Call our Austin, TX store at 512-982-9393 or our Los Angeles, CA area store at 562-981-6800. We have two locations in Austin, Texas and the Los Angeles California area where we offer installation and customization services.

If you are considering multiple items, please contact us for potential shipping discounts. We install on premises at both locations.

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