1972-1978 (65,70 & 75HP - 3 Cyl.) 1976-1978 (150,175,200 & 235 HP - 6 Cyl. - 2 Req.) Cross Flow Engines, Screw Terminal Power Pack, No RPM Limit. Includes: Cover & Gasket Replaces: 581334, 581493, 581551, 581552, 581713, 581726, 582057, 581925, 18-5757, 18-5754, 300-01400, 4-5757