Feature:1. Part Number: The reference part number for Mercruiser are 91 43506T, 91 43506, for Sierra is 18 9842, for GLM is 90240, 8245191, 824519 1, 11 42632, 824519, 853651.2. Strong Compatibility: Wrench tool is replacement for Mercruiser Alpha One Gen 1 2 2.0L, 2.4L, 2.5L without preloaded pin, fit for MR, fit for Alpha One, fit for Gen 1 Gen 2.3. Easy Disassembly: Designed specifically for removing and installing sterndrives and outboards' threaded bearing retainers, this wrench makes the task effortless and efficient.4. High Torsion Capacity: With its ability to withstand high torsion, the wrench tool ensures stability and safety during the tightening and securing of bearings.5. Professional Performance: This wrench is a trusted tool among professionals in the marine industry, offering exceptional performance and ease of use for optimal results.Specification:Item Type: Drive Shaft Bearing Retainer WrenchMaterial: Alloy steelReference Part Number: 8245191, 824519 1, 11 42632, 824519, 853651for Mercruiser: 91 43506T, 91 43506for Sierra: 18 9842for GLM: 90240Fitment: Replacement for Mercruiser Alpha One Gen 1 2 2.0L, 2.4L, 2.5L 3.0L without preloaded pinFit for MR, fit for Alpha One, fit for Gen 1 Gen 2.Package List:1 xWrench ToolNote:Please double check the part number of your item, matching information is for reference only.