Father’s Day Sale – Up to 40% Off! Shop Now >

Find Engine Dressup for your Sierra 2500

Sinister Diesel Radiator Surge Tank Cap; Blue (17-26 6.6L Duramax Sierra 2500 HD)Find parts that fit my vehicle

Item HG67364
Our Price

$64.99

Military, Medical & First Responders $3.25 Available in AT Cash Rewards.
Confirm Eligibility

CONFIRM THIS FITS YOUR VEHICLE!

Select a different vehicle Help?
Update or Change Vehicle
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    or use

    Shop Owners Save More! Sign up for our dealer program

      Product Information

      Features, Description, Q&A

      Features

      • Impervious To Cracking Like The OEM Cap
      • CNC Machined From Solid Billet Aluminum
      • Anodized In Sinister Blue For Corrosion Resistance
      • 2 Year Warranty
      • Made In The USA
      • Fits 2017-2026 6.6L Duramax Sierra 2500 HD

      Description

      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

      Questions & Answers

      No questions about this product yet. Ask the First Question

      Will It Fit My Sierra 2500

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