3YM30 Overhaul Rebuild Kit For Yanmar Marine Engine. 1set Full gasekt kit 3pcs Liner Cylinder 3pcs Piston, STD size 3pcs Piston Pin 6pcs Pin Clips 3 Intake Valves 3 Exhaust Valves 6 Valve Guides 3 Intake Valves Seats 3 Exhaust Valves Seats 3set Ring set for 3pistons.STD size 1set Crankshaft bearing 1set Connect Rod Bearing 1Set Thrust washer Engine Model 3YM30. If you don't receive package over 30 business workdays, please notify us. Please make sure it is correct. We believe our items are so outstanding. All products are quality checked. We will be happy to resolve any issues you may have in a cordial and friendly manner. We appreciate your Postive Feedback, and will do the same in return.