A-B1795432-AI RING SET-020 One New Aftermarket Replacement Piston Ring Set . 020 Oversize Fits Briggs and Stratton (B&S) Small Engines This aftermarket replacement piston ring set is machined to . 020 inch oversize for use in Fits Briggs and Stratton (B&S) small gasoline engines that have been bored or honed . 020 inch over standard. The rings seal the piston to the cylinder wall, separating the combustion chamber from the crankcase to maintain compression and reduce oil
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