FREE 1 to 3-Day Delivery on Orders $149+ Details

$12K Summer Sweepstakes! Enter Now >

Find Engine Dressup for your Silverado 2500

Sinister Diesel Coolant Block-Off Plate; Blue (14-26 6.6L Duramax Silverado 2500 HD)Find parts that fit my vehicle

Item HS76299
Product Image
Our Price

$69.99

Military, Medical & First Responders $3.50 Available in AT Cash Rewards.
Confirm Eligibility

CONFIRM THIS FITS YOUR VEHICLE!

Select a different vehicle Help?
Update or Change Vehicle
Add to Cart
Save for later
    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
    Join For FREE

      Product Information

      Features, Description, Q&A

      Features

      • O-Ring Seal Provides Maximum Longevity
      • Thicker Billet Block-Off Plate Compared to OEM
      • Anodized Sinister Blue Finish for Corrosion Resistance
      • CNC Machined From T6-6061 Billet Aluminum
      • Etched Sinister Diesel Logo
      • Replacement for Failure-Prone OEM Plate Using a Gasket
      • Fits 2014-2026 6.6L Duramax Silverado 2500 HD Models

      Description

      Premium Coolant Block-Off Plate. The Sinister Diesel Coolant Block-Off Plate in Blue is designed as a durable, leak-free replacement for the standard OEM coolant block-off plate. It effectively seals coolant passages to prevent gasket failure issues common with the factory part, ensuring improved reliability and longevity of your diesel truck's coolant system.

      Construction and Appearance. Crafted from CNC-machined T6-6061 billet aluminum, this block-off plate is thicker and more robust than the OEM version. It features an anodized Sinister Blue finish that provides corrosion resistance and enhances visual appeal, complemented by an etched Sinister Diesel logo that highlights quality craftsmanship.

      Installation. Installation is straightforward, requiring no drilling or complex modifications. The included durable O-Ring ensures a secure, leak-free seal with minimal effort.

      Application. Specifically engineered to fit 2014-2026 6.6L Duramax Silverado 2500 HD models, this product offers precise fitment and compatibility for this engine and vehicle combination.

      Sinister Diesel SD-CBO-DMAX-01

      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 Silverado 2500

      • 6.6L V8 Duramax - 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26