Amazon offers the OTC Cylinder Leakage Tester Kit
, model no. 5609, for $51.94
with free shipping
. That's the lowest total price we could find by $14. Sales tax is added where applicable. It purports to diagnose internal engine problems such as bad rings valves and leaking head gaskets. The kit features dual 2.5" chrome bezel gauges, pressure regulated manifold with quick couplers, 24" hose, two thread adapters, and carry case with removable lid.