Dual Gauge Model with14mm Spark Plug Hole Adapter Hose Ends - Braided Rubber This is the kit you

This is the kit you need to accurately cc most cylinder head combustion chambers

and reduces wheel hop

This provides external oil lines to run an engine oil cooler while dropping the factory oil filter only 1" lower than stock

Built from premium chrome-silicon and H-11 tool steels with precision heat treatment and shot-peening

Easily replaces the stock relief valve

Dual Gauge Model with14mm Spark Plug Hole Adapter Hose Ends - Braided Rubber This is the kit youThis dual gauge leakdown tester measures the condition of your head gaskets, piston rings, and valves. 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.