1 Set STD Crankshaft / Main Bearing. 1 Set STD Connecting Con Rod Bearing. 1 Set STD Thrust Washer / Bearing.For Caterpillar CAT S3Q2 Engine 303C CR MINI EXCAVATOR. Please tell us of your engine model or a view of engine nameplate when order this item to lower the error rate. In Order To Avoid Unnecessary Return, please Check The Product Picture And Part Number Carefully To Make Sure It Is The Product You Want. If you don't receive package over 30 business workdays, please inform us. We will do our best to offer you satisfied resolutions.