A-B1821297-AI SHIM-END PLAYOne New Aftermarket Replacement End Play Shim Fits Briggs and Stratton Small Engines This crankshaft end play shim (also called a thrust shim or crankshaft thrust washer) is used during engine rebuilds and crankshaft service to set correct crankshaft end play in Fits Briggs & Fits Stratton small engines. Proper end play is critical to engine longevity too much play accelerates bearing wear, while too little can cause binding. This shim is installed at