If you want the convenience of purchasing the gaskets and oil seals you need in one kit, we have you covered. Kits come complete with engine oil seals, head, base, and case gaskets and other necessary gaskets, valve seals, and O-rings (where applicable) for rebuilding the top & bottom end on your machine. These TopendGaskets brand Kits are made from the highest quality materials, to OEM specs, and are 100% Non-Asbestos, as shown in photos.