OLDSMOBILE/OLDS ROCKET 330 ENGINE TAPERED RING COMPRESSOR TOOL 3.937 BORE

Just slide the piston and rod assembly down into the tapered ring compressor. The taper will create a squeezing of the piston rings  allowing the piston and rod to be tapped down into the engine bore.

Will help simplify the piston installation process during engine building.

Each tool will come with size on it.

If you need a custom size please message