【Perfect Compatibility】 Specifically designed for Mercury MerCruiser outdrives. Fits all Alpha One, Pre Alpha, Generation 2, Bravo One, and TRS units. Also compatible with Mercury/Mariner outboards 150HP and up.
【Exact OEM Replacement】 Directly replaces Mercury part numbers 91-36235, 91-17256, Sierra 18-9803, and GLM 90100. A must-have DIY tool for removing and installing driveshaft housing (upper) bearing retainer nuts.
【Heavy-Duty Construction】 Forged from high-grade alloy steel with a black oxide finish. This spanner wrench is built for high torque, ensuring rust resistance and lifelong durability.
【Professional Design】 Features a 1/2-inch socket driver for use with breaker bars or torque wrenches. Precisely engineered to fit the 4-3/8" retainer nut without slipping, protecting your expensive marine parts from damage.
【Purchase Note】 Please verify your part number before purchase. Note: Will NOT fit Bravo 2, 3, XR, or TR units.