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Features, Description, Q&A
High-Quality Radiator Cap. The Sinister Diesel Radiator Surge Tank Cap Blue is a durable replacement designed to securely seal the coolant radiator surge tank. It prevents leaks and spills, maintaining proper coolant system pressure and protecting the engine from overheating.
_x000D_Construction and Appearance. CNC machined from solid billet aluminum, this surge tank cap offers superior strength and durability. Its Sinister Blue anodized finish resists corrosion and adds a sleek, custom look to the engine bay.
_x000D_Installation. Installation is straightforward and requires no drilling, providing a quick and easy upgrade over the factory cap. It is engineered for a precise fit to the surge tank.
_x000D_Warranty. Backed by a two-year warranty for quality assurance.
_x000D_Application. Designed to fit 2017 through 2026 6.6L Duramax Silverado 2500 HD models.
Sinister Diesel SD-RSTC-L5P
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov