Proform 66839 Engine Compression Test Kit. The gauge records incoming air pressure and the right gauge records individual cylinder pressure - and the difference is you leakdown. Includes 14mm spark plug adapter.
Proform 66839 Leakdown Tester
Proform for Leakdown Tester Kit Dual Gauge Model with14mm Spark Plug Hole
Proform Leakdown Tester Kit
0-100PS Engine Cylinder Leak Down Tester Kit Gasoline Engine Leakdown Tester Kit
Engine Cylinder Leak Down Tester Kitgasoline Engine Leakdown Tester Kit With Ext
