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BT-500 Combustion Leak Test Kit - Made in USA

4.6 4.6 out of 5 stars 2,753 ratings

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Purchase options and add-ons

Brand Block Tester
Item Weight 16 ounces
Item Dimensions LxWxH 10 x 3 x 5 inches

About this item

  • Complete Combustion Leak Test Kit - Includes Fluid - Nothing More to Buy
  • When Fluid Turns From BLUE to YELLOW Combustion Leak is Present
  • Tests in seconds for combustion leaks caused by: Blown Head Gasket (BHG) Cracked Head or Block Pulled Bolts or Studs Warped Sealing Surfaces
  • Quality Tool Made in USA for over 45 years with Limited Lifetime Warranty
  • Packaged in OEM white box
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Additional Details

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Product Description

Block Tester BT-500 Combustion Leak Test Kit

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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Block Tester BT-500 Combustion Leak Test Kit - Made in USA


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What's in the box

  • Block Tester BT-500 Combustion Leak Test Kit
  • Product guides and documents

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    Customer reviews

    4.6 out of 5 stars
    4.6 out of 5
    2,753 global ratings

    Customers say

    Customers like the value, performance, delivery, and quality of the electric circuit testing device. They mention that it's cheap insurance, works excellent, and is reliable. Customers are also satisfied with ease of use. That said, some complain about the color.

    AI-generated from the text of customer reviews

    126 customers mention94 positive32 negative

    Customers like the performance of the electric circuit testing device. They say it works excellent, is fast, and easy to use. Customers are impressed with the construction and the utility of the tool, which makes it easy to diagnose a potential head gasket leak.

    "This product works well, it accurately verifies combustion into the cooling system. Great product!" Read more

    "Decent bit of kit. I was impressed by the construction and utility of the tool...." Read more

    "Simple and easy to use! Highly Effective!" Read more

    "...CONCLUSIONThis tester is awesome. Super easy to use. I would recommend it to friend." Read more

    90 customers mention90 positive0 negative

    Customers find the electric circuit testing device easy to use. They mention that the instructions are very explicit, it has a pretty easy design, and the chemical is cheap to replace. They also say it's a great kit to quickly test for yourself if you have a leak and is a nice on-hand tool for quick and accurate results.

    "It was easy to use and saved me money to see if it had a head gasket. Save me money not going to a repair shop." Read more

    "...Pretty easy design and comes with instructions. first picture is testing after about 3 minutes and never changed color...." Read more

    "Simple and easy to use! Highly Effective!" Read more

    "...CONCLUSIONThis tester is awesome. Super easy to use. I would recommend it to friend." Read more

    63 customers mention56 positive7 negative

    Customers like the quality of the electric circuit testing device. They say it is well-built, reliable, and accurate. Some say it's a great tool for the DIY crowd and will last a while.

    "...Great product!" Read more

    "Decent bit of kit. I was impressed by the construction and utility of the tool...." Read more

    "Great product!" Read more

    "High quality construction. Arrived quickly on Prime.BACKGROUNDI used it to confirm (?)..." Read more

    34 customers mention24 positive10 negative

    Customers like the value of the electric circuit testing device. They mention that it's worth every penny, it'd be cheap insurance, and easy and cheap diagnostics.

    "It was easy to use and saved me money to see if it had a head gasket. Save me money not going to a repair shop." Read more

    "...It's very easy to use and really no mess when using it. It will save you money by not having to pay someone to do it for you and to help in the..." Read more

    "It's not cheap but much cheaper than going to a mechanic and risking being misdiagnosed by a dishonest one...." Read more

    "Was worried I had a coolent leak in a new truck I bought. This was a fair price and easy to use." Read more

    10 customers mention10 positive0 negative

    Customers are satisfied with the delivery of the electric circuit testing device. They mention that it is easy to use, the shipping was fast, and the service is good. They also appreciate the quick and inexpensive way to figure out if they have a blown fuse.

    "Product received quickly, packaged well and seems to be very well made. I was pleasantly surprised at the thickness of the plastic fluid tester...." Read more

    "Great product...super fast delivery....could confirm my diagnosis." Read more

    "Easy to use, fast shipping, quality product. The only bad thing is it proved that I blew my head gasket! I would definitely buy it again." Read more

    "Excellent product. Fast delivery" Read more

    9 customers mention9 positive0 negative

    Customers are satisfied with the accuracy of the electric circuit testing device. They mention that it provides accurate results and helps ease their mind when buying used. Customers also appreciate the quick and accurate results, and the fact that it works well to accurately verify combustion into the cooling system.

    "This product works well, it accurately verifies combustion into the cooling system. Great product!" Read more

    "...It is a nice on-hand tool for quick and accurate results." Read more

    "I used this product on 2 of my vehicles and the readings were spot on. I was recommended to use this product by a mechanic and a few people...." Read more

    "...The test in super easy to perform, is non invasive, and gives you accurate results within a few short minutes." Read more

    12 customers mention3 positive9 negative

    Customers are not happy with the gas. They mention that it causes combustion gas in the coolant circuit, engine overheating, and exhaust gas in their cooling system.

    "...Then it told me there was still exhaust gas in my cooling system (confirmed by a mechanic: I goofed up my head gasket job)...." Read more

    "...The first episode was when it overheated to the point the radiator let go...." Read more

    "...head gasket but it was loosing very little coolant and no smoke from the tail pipe and still running great...." Read more

    "...Photo 1 first check, positive test, combustion gas in the coolant circuit...." Read more

    10 customers mention0 positive10 negative

    Customers are not satisfied with the color of the electric circuit testing device. They mention that it turns greenish-yellow and never changes color. Some reviewers also mention that the reagent turns yellow.

    "...first picture is testing after about 3 minutes and never changed color...." Read more

    "...did a successful test, I was still concerned that the yellow color of the reagent, which is very similar to that of Prestone antifreeze, might be..." Read more

    "...Stayed blue from cooking system, immediate yellow from exhaust" Read more

    "...It turned yellow meaning it was present, but there was no other evidence that there was a problem..... I replaced the thermostat housing and..." Read more

    Works as its intended to
    5 Stars
    Works as its intended to
    First time using this type of product. Wanted to test to see if my head gasket was blown or if my turbo is instead the culprit. Pretty easy design and comes with instructions. first picture is testing after about 3 minutes and never changed color. so i got curious to see if this product actually works so i tested it on the exhaust fumes coming out of the oil fill cap and sure enough it turned yellow (2nd picture). This product does actually work and saves me a headache! however i do need a new turbo now...
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    Top reviews from the United States

    Reviewed in the United States on February 29, 2024
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    Reviewed in the United States on January 19, 2024
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    Dan
    5.0 out of 5 stars Works as its intended to
    Reviewed in the United States on January 19, 2024
    First time using this type of product. Wanted to test to see if my head gasket was blown or if my turbo is instead the culprit. Pretty easy design and comes with instructions. first picture is testing after about 3 minutes and never changed color. so i got curious to see if this product actually works so i tested it on the exhaust fumes coming out of the oil fill cap and sure enough it turned yellow (2nd picture). This product does actually work and saves me a headache! however i do need a new turbo now...
    Images in this review
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    Customer imageCustomer image
    2 people found this helpful
    Report
    Reviewed in the United States on October 5, 2017
    64 people found this helpful
    Report
    Reviewed in the United States on January 27, 2024
    Customer image
    5.0 out of 5 stars HEAD GASKET CHECKER!
    Reviewed in the United States on January 27, 2024
    Simple and easy to use! Highly Effective!
    Images in this review
    Customer image
    Customer image
    Reviewed in the United States on October 25, 2023
    One person found this helpful
    Report
    Reviewed in the United States on January 29, 2024
    Reviewed in the United States on March 20, 2018
    76 people found this helpful
    Report

    Top reviews from other countries

    Translate all reviews to English
    Brian
    5.0 out of 5 stars Worked great
    Reviewed in Canada on February 4, 2024
    ENRIQUE MICHELLE FIGUEROA ESQUEDA
    5.0 out of 5 stars De las mejores pruebas de hidrocarburos
    Reviewed in Mexico on November 22, 2022
    Alex
    5.0 out of 5 stars Solid test for head gasket leak
    Reviewed in the United Kingdom on August 22, 2023
    Maccar
    5.0 out of 5 stars Excellent test kit with fast results
    Reviewed in Australia on December 23, 2023
    madcowjack
    5.0 out of 5 stars This kit tells you the truth
    Reviewed in Canada on November 5, 2023
    3 people found this helpful
    Report