Yamaha Yamalube Big Bear 400 (2007-2012) Differential/Gear Oil (1 Quart) Change Kit, #ACC-SHAFT-PL-32/ Washers Kit Includes: (1) Quart ACC-SHAFT-PL-32 Kit Includes: Front Differential Gaskets Yamaha Part#s 90430-10003-00, 214-11198-01-00 Kit Includes: Rear Differential Gasket Yamaha Part# 's (2) 214-11198-01-00 Kit Inlcudes: Xfinder Helmet Sticker Yamaha Original OEM Oil and Air Filter Change Kits. Differential and Gear Oil change Kits. Every kit, every part contains all Original OEM Yamaha parts. Every gasket, O-ring, crush washer and filter is made by Yamaha- specifically for Yamaha. If you receive this kit and there are 3rd party gaskets, or the parts are not in Original Yamaha Part packaging - please return the kit immediately for full refund – You do not want to risk your Yamaha with inferior parts. We understand that quality does cost more even if it’s just a gasket. Better Quality means longer lasting and better performance. So, the choice is yours, I know I always choose Yamaha OEM parts for my Yamaha, down to every nut, bolt and washer.