Is this feature helpful?
Thank you for your feedback.


Have one to sell?

BlueDevil Radiator & Block Sealer

3.7 out of 5 stars 55 ratings

Available from these sellers.
    This fits your .
  • Make sure this fits by entering your model number.
  • Permanent repair for radiator and block leaks.
  • Works effectively on plastic, aluminum and/or metal radiators
  • Contains no solids or fibrous materials.
  • Safe and Easy to use.
  • Guaranteed
See more product details
New (2) from $27.95 + FREE Shipping

Compare with similar items


BlueDevil Radiator & Block Sealer
Bar's Leaks HDC Radiator Stop Leak Tablet - 60 Grams
Prestone AS145 Radiator Sealer Stop Leak - 11 oz.
Bar's Leaks PLT11 Pelletized HD Radiator Stop Leak - 11 oz.
J-B Weld DS-114 PERM-O-Seal Radiator Stop Leak - 0.7 oz.
Irontite All Weather Seal, Blue, 16 oz
Customer Rating 3.7 out of 5 stars (55) 4.4 out of 5 stars (209) 4.4 out of 5 stars (25) 4.0 out of 5 stars (144) 4.3 out of 5 stars (61) 4.3 out of 5 stars (52)
Price From $27.95 $5.92 $8.68 $3.27 $6.42 $17.00
Shipping FREE Shipping on your first order. Details FREE Shipping on your first order. Details FREE Shipping on your first order. Details FREE Shipping on your first order. Details FREE Shipping on your first order. Details
Sold By Available from these sellers Amazon.com Amazon.com Amazon.com G.P.S. G.P.S.

Special offers and product promotions

Have a question?

Find answers in product info, Q&As, reviews

There was a problem completing your request. Please try your search again later.
All Product Information Customer Q&A's Customer Reviews

Your question may be answered by sellers, manufacturers, or customers who purchased this item, who are all part of the Amazon community.

Please make sure that you are posting in the form of a question.

Please enter a question.


Product information

Technical Details

Additional Information

Important information

Legal Disclaimer

NOTICE: WARRANTEE VOID on product if purchased from any other amazon.com seller other then BlueDevil Products. www.gobdp.com NO EXCEPTIONS!

Product description

BlueDevil Radiator & Block Sealer is an easy-to-use formula that will repair and seal leaks in radiators and/or engine blocks. It does not contain solid or fibrous materials and will not clog or harm cooling systems. It will bond to plastic, cast iron, aluminum, alloy or metal. BlueDevil Radiator & Block Sealer is compatible in gasoline and diesel engines. It is a guaranteed permanent repair.


Customer Questions & Answers

Customer reviews

3.7 out of 5 stars
3.7 out of 5
55 customer ratings
How does Amazon calculate star ratings?
Reviewed in the United States on April 13, 2016
Verified Purchase
15 people found this helpful
Comment Report abuse
Reviewed in the United States on August 29, 2019
Verified Purchase
One person found this helpful
Comment Report abuse
Reviewed in the United States on March 26, 2018
Verified Purchase
5 people found this helpful
Comment Report abuse
Reviewed in the United States on June 25, 2019
Verified Purchase
2 people found this helpful
Comment Report abuse
Reviewed in the United States on August 26, 2019
Verified Purchase
One person found this helpful
Comment Report abuse
Reviewed in the United States on September 27, 2017
Verified Purchase
3 people found this helpful
Comment Report abuse
Reviewed in the United States on January 8, 2018
Verified Purchase
2 people found this helpful
Comment Report abuse
Reviewed in the United States on February 20, 2020
Verified Purchase