703 Compression Tester

Our Price $30.40

A simple compression tester for diagnosing engine problems including burnt valves, scored cylinders, leaking head gaskets, tight tappets, broken valve springs, broken rings or damaged pistons.


  • Tester screws into 4 mm Spark plug hole on outboard engines and other small engines
  • Use to check for low compression
  • Measures up to 200 PSI or 14KGS