OE Number: The referencing OE number of this cylinder piston gasket kit are 2XJ 11631 01 97, 4L0 11633 00 00, 93310 316D6 00, 2XJ 11181 00 00, B8E S0000 00 00, 3JM 11351 02 00 . Fitment: The piston gasket rings top end kit is a replacement for Blaster 200 YFS200 19882006, please check the moden and year of manufacturing before ordering. Function: The piston is a cylindrical engine component, used to transfer force from expanding gas in the cylinder to the crankshaft through a piston rod or connecting rod. High Performance: The cylinder piston can work normally under harsh conditions, effectively improve engine displacement, performance, horsepower and torque! Easy Installation: Easy to install, no modification, cutting, or drilling required. It adopts original standard, which is a perfect replacement and can perfectly match to your vehicle.