Features: 1.Part Number: According to the original factory specifications, replacing reference part number is 91?78310. 2.Applicable Model: Marine hinge pin tool, replacement for Mercruiser Alpha One, One Generation Two; Replacement for Mercruiser Bravo One, Two, Three, R, MP, MC?1. 3.Function: This hinge pin tool is used on the hinge pin bolt and separates the housing from the gimbal ring. 4.Durable Material: Made of superior quality steel material, strong wear resistance, rugged and durable. 5.Professional Installation: Professional installation is highly recommended, according to the original factory specifications, perfect match to the original. Specification: Item Type: Marine Hinge Pin Tool_x000D_ Material: Steel_x000D_ Color: Black_x000D_ Replacement Part Number: 91-78310_x000D_ Fitment:_x000D_ Replacement for Mercruiser Alpha One_x000D_ Replacement for Mercruiser Alpha One Generation Two_x000D_ Replacement for Mercruiser Bravo One, Two, Three, R, MP, MC-1 PackageList: 1 x_x000D_ _x000D_ Marine Hinge Pin Tool Note: 1. Please double check the part number of your item, matching information is for reference only._x000D_ 2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!