Manual Piston Ring Filer By Proform. To assure proper piston ring end-gap, the piston ring filer enables the user to file piston rings quickly and accurately including LS1 engines. Position the piston ring firmly against the dowel pins, crank the handle to turn the abrasive wheel. Using a feeler gauge, file the piston ring to meet the manufacturer's specification.
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Part #: 66785
Mount the filer to your work bench, position the ring against the stops, and crank the wheel. Carbide coated steel wheel files the hardest of rings
Part #: 66786
ptimize the performance of Piston Ring Filer P/N 66785 with this replacement grinding wheel.