FREE 1 to 3-Day Delivery on Orders $149+ Details
$64.99
Saved - View your saved items
We're sorry. We couldn't save this product at this time.
or use
Features, Description, Q&A
High-Quality Radiator Cap. The Sinister Diesel Radiator Surge Tank Cap in Blue is designed to replace your factory coolant radiator surge tank cap. It provides a secure, tight seal to prevent leaks and protect your engine cooling system during regular vehicle operation.
Construction and Appearance. Crafted from solid billet aluminum through CNC machining, this surge tank cap offers superior strength and durability. It also features an anodized Sinister Blue finish, enhancing corrosion resistance and adding a stylish touch to your engine bay.
Installation. Installation is straightforward and requires no drilling, making this a simple and effective upgrade to improve your vehicle's cooling system reliability.
Warranty. This product includes a 2-year warranty, ensuring quality and providing customer confidence.
Application. Specifically designed to fit the 2017-2026 6.6L Duramax Sierra 2500 HD models without exclusions.
Sinister Diesel SD-RSTC-L5P
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov