SkegShield SS00501 Mercruiser Alpha 1 Drives 1985-1990 Skeg Guard Fits Mercruiser Alpha 1 Drives 1985-1990 Made from high quality 316 Marine Grade Polished Stainless Steel. No welding required, no epoxies an easy do-it-yourself 10 minute application. 3 Year Warranty for Original Purchaser. Guards from reefs, coral head, lake bed rocks, boat ramps and submerged floating debris. Superior endcap design with a reinforced lower edge for protection from ramp damage or riverbed, lakebed dragging, and better water/hydro streamlining. The only skeg guard with a drainage hole at the lower backside for when motor is not tilted (storage/boat dock) and will drain from front/top when motor is tilted, protecting from water retention.