ENGINE THRUST WASHERS / THRUST BEARINGS – SMALL PART, BIG RESPONSIBILITY Many people overlook thrust washers (also called thrust bearings) during engine assembly, yet they play a critical role in engine longevity. 🔧 What is the purpose of thrust washers? Thrust washers control crankshaft end-float (axial movement). They prevent the crankshaft from moving forward and backward when forces are applied by: Clutch operation (manual vehicles) Torque converter load (automatic vehicles) Crankshaft rota