Service kit includes replacement bellows, gimbal bearing, gaskets, & o-rings for OMC Cobra non-cone clutch stern drives. OMC Cobra Transom Seal Kit | Sierra 18-2771 Sierra Cobra transom bellows kit Fits all OMC Cobra stern drives without cone clutch Kit contains out drive mounting gasket, U-joint bellows, exhaust bellows, shift cable bellows, gimbal bearing, and hose clamp Does not include water intake hose Replaces OMC 3854270 Replaces Mallory 9-72930