Block Tester BT-500 Combustion Leak Test Kit


This is our original kit that comes with the tester, squeeze bulb, and a 16 ounce bottle of fluid packaged in a white box.



The Block TesterĀ® is 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.


Block Tester Operating Instructions

Safety Data Sheeet (SDS)