Winderosa 822238 Engine Oil Seal Kit Fits: Yamaha YFZ450 2004 - 2013 Include all oil seals necessary to Rebuild the engine and transmission including crankshaft, output shaft, water pump, clutch, shaft and starter seals (valve stem seal or mechanical seal not included) Winderosa engine oil seal kits are designed for a total Rebuild of the engine and transmission, delivering best-in-class value by offering the right balance of price and performance Constructed from quality materials that meet or exceed OEM specifications Made in the USA