OEMTOOLS 27145 Block Tester<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Locate Internal Combustion Leaks Quickly and Easily</li><li>When Fluid Turns From BLUE to YELLOW Combustion Leak is Present</li><li>Tests in seconds for: Blown Head Gasket (BHG) Cracked Head or Block Pulled Bolts or Studs Warped Sealing Surfaces</li><li>Designed for Professional Auto Mechanics and Heavy duty Applications</li><li>Comes in Sturdy Blow Molded Plastic Case</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31u0CRguloL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41L6bfA9MJL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51hKiYt4D0L.jpg" noproxy>