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Return policy: Returnable until Jan 31, 2021
For the 2020 holiday season, returnable items shipped between October 1 and December 31 can be returned until January 31, 2021.
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  • PLAN STARTS: Plans start date of purchase. Coverage for mechanical breakdowns begins after the manufacturer's warranty expires.
  • COVERAGE DETAIL: 100% functional parts and labor included on products used for normal use, including mechanical and electrical failures, for parts purchased on Amazon within the last 30 days.
  • PLAN BENEFITS: $0 deductible and no hidden fees. Fully transferable if bought as a gift. Not valid on auto parts purchased for commercial use.
  • FILING A CLAIM: Easy claims process online 24/7. Visit assurant360claims.com. We’ll fix it, replace it or send you an Amazon gift card up to the price you paid for your product.
  • HOW TO CANCEL: Cancel anytime, full refund within the first 30 days (less any claims paid). To cancel, visit "Your Orders" on Amazon.com and click "Return or Replace Item" next to the protection plan.

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3-Year Auto Parts Protection Plan

from Assurant
$7.24
  • PLAN STARTS: Plans start date of purchase. Coverage for mechanical breakdowns begins after the manufacturer's warranty expires.
  • COVERAGE DETAIL: 100% functional parts and labor included on products used for normal use, including mechanical and electrical failures, for parts purchased on Amazon within the last 30 days.
  • PLAN BENEFITS: $0 deductible and no hidden fees. Fully transferable if bought as a gift. Not valid on auto parts purchased for commercial use.
  • FILING A CLAIM: Easy claims process online 24/7. Visit assurant360claims.com. We’ll fix it, replace it or send you an Amazon gift card up to the price you paid for your product.
  • HOW TO CANCEL: Cancel anytime, full refund within the first 30 days (less any claims paid). To cancel, visit "Your Orders" on Amazon.com and click "Return or Replace Item" next to the protection plan.

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Block Tester BT-700 Combustion Leak Test Kit in Hard Case - Made in USA

4.6 out of 5 stars 276 ratings

List Price: $49.99
Price: $42.99 & FREE Returns
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  • 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
  • Comes in Sturdy Plastic Case
  • Quality Tool Made in USA for over 45 years with Limited Lifetime Warranty
See more product details

Frequently bought together

  • Block Tester BT-700 Combustion Leak Test Kit in Hard Case - Made in USA
  • +
  • EPAUTO Spill Proof Radiator Coolant Filling Funnel Kit
  • +
  • Block Tester BT-600 Replacement Combustion Leak Test Fluid 16 oz
Total price: $69.85
Buy the selected items together

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Product description

The Block Tester is a used to detect the presence of exhaust gases in an engine's cooling system, typically caused by a blown head gasket or cracked head or block. It comes complete with enough fluid to conduct 16 tests. There are no additional tools needed, and no need to tap into an engine vacuum source. Works with virtually any liquid-cooled internal combustion engine or generator with a closed cooling system including: gasoline, diesel, propane, natural gas and other alternative fuels. Large, single-chamber design provides greater accuracy and uses less test fluid. Comes in a sturdy hard shell case suitable for rugged storage and transport.


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4.6 out of 5 stars
4.6 out of 5
276 global ratings
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Top reviews from the United States

Reviewed in the United States on July 29, 2018
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21 people found this helpful
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Reviewed in the United States on October 23, 2020
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Reviewed in the United States on November 6, 2019
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Reviewed in the United States on November 12, 2019
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Reviewed in the United States on March 29, 2019
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Reviewed in the United States on September 16, 2019
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Reviewed in the United States on October 24, 2019
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Reviewed in the United States on September 21, 2018
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5.0 out of 5 stars Brilliant Product
Reviewed in the United Kingdom on June 29, 2020
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