BlueDevil Radiator & Block Sealer
BlueDevil Radiator & Block Sealer
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Blue Devil

BlueDevil Radiator & Block Sealer

4.3 stars out of 24 reviews
(4.3)|
24 ratings

Key item features

  • Permanent Repair: This sealer offers a lasting solution for leaks in radiators and engine blocks, ensuring vehicle functionality.
  • Versatile Material: It effectively seals leaks in plastic, aluminum, cast iron, alloy, and other metal radiators and engine components.
  • Clog-Free Formula: The product's composition is free of solid or fibrous materials, preventing clogging or harm to the vehicle's systems.
  • Internal Correction: It addresses and corrects leaks from within the system, providing a reliable and quick fix.
  • Engine Compatibility: The sealer is compatible for use in both gasoline and diesel engines, broadening its application.
  • Safety Compliant: The formula meets ASTM D1881 and ASTM D3147 compliance standards, indicating its safety and effectiveness.
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Current price is Now $18.99
You save $7.00
was $25.99
$1.19/oz
Price when purchased online
  • Free shipping

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Columbus, 43215
Arrives by Fri, Mar 6
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Sold and shipped by Monster Materials
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Customer ratings & reviews

4.3 out of 5 stars
stars24 ratings12 reviews
How item rating is calculated
  1. 5 stars67% (16)
  2. 4 stars17% (4)
  3. 3 stars8% (2)
  4. 2 stars0% (0)
  5. 1 star8% (2)
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Showing 1-3 of 12 reviews

Dec 16, 2025
joe
Sold and shipped byCraigsparts
5 out of 5 stars review

Verified Purchase

simple to use and doesn't clog the radiator or heater

Incentivized Review
Helpful?5P8KONGICM5F124403839
Aug 20, 2025
Jerry
Sold and shipped byIQP
5 out of 5 stars review

Verified Purchase

This product worked way better than I expected keep up the good work

Incentivized Review
Helpful?5P8KONGICM5F124403839
Dec 15, 2025
betty
Sold and shipped byAutoParts USA
5 out of 5 stars review

Verified Purchase

awesome!

it did the job!

Incentivized Review
Helpful?5P8KONGICM5F124403839