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Sinister Diesel Radiator Surge Tank Cap; Blue (17-26 6.6L Duramax Silverado 3500 HD)Find parts that fit my vehicle

Item SHS67256
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$64.99

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      Product Information

      Features, Description, Q&A

      Features

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      • Impervious to Cracking Compared to OEM Cap
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      • CNC Machined from Solid Billet Aluminum
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      • Anodized in Sinister Blue for Corrosion Resistance
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      • 2-Year Warranty Included
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      • Made in the USA
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      • Fits 2017-2026 6.6L Duramax Silverado 3500 HD
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      Description

      Precision Radiator Cap. The Sinister Diesel Radiator Surge Tank Cap in blue is designed to replace the factory surge tank cap on your vehicle. It provides a tight, secure seal to prevent coolant leaks and protects your engine’s cooling system for reliable everyday performance.

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      Construction and Appearance. Made from high-strength billet aluminum, this cap is CNC machined for precise fitment and long-lasting durability. The anodized blue finish adds a corrosion-resistant, stylish accent to your engine bay.

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      Installation. Installation is simple and requires no modifications or drilling. It fits directly in place of the factory cap for a hassle-free upgrade.

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      Warranty. This product includes a 2-year warranty for confidence in quality.

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      Application. Specifically engineered to fit 2017-2026 6.6L Duramax Silverado 3500 HD models without exception.

      Sinister Diesel SD-RSTC-L5P

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

      Questions & Answers

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      Will It Fit My Silverado 3500

      • 6.6L V8 Duramax - 17, 18, 19, 20, 21, 22, 23, 24, 25, 26