Oil Tank Reservoir Aluminum Sleeve for Ski Doo S Chassis, XP, Rev, F, ZX, and CK Reshape the top opening of your oil reservoir back to a perfect sealing surface No more oily residue on the pull rope, exhaust, clutches or brakes Makes removing and installing the oil cap easier Complete with rubber O-ring for added sealing Wide top lip for large sealing surface; tapered bore for added strength