Applicable Mercury/Mariner outboard engines (75hp & higher) & MerCruiser Alpha One & Bravo drives: This product is suitable for specific Mercury/Mariner outboard engines with 75hp or higher (excluding 225EFI 4-Stroke) and MerCruiser Alpha One & Bravo drives Visit Amazon's SONAR parts finder at [fit-guideseastarsolutionscom](http://fit-guideseastarsolutionscom) to confirm product compatibility with your application Replaces Mercury/Mercruiser part numbers: This product replaces Mercury/Mercruiser part numbers 11-52707A1 and 11-52707Q1, containing Sierra NO. O.E. No. 18-3200, 14-31210, 14-816629, Tab Washer 18-3700, and Prop Nut OEM: MERCURY MARINE 11-52707A1, 11-52707Q1 Product dimensions: Kit dimensions are approximately 1 centimeter in width, length, and height, making it compact and easy to store Brand & material: Kit is manufactured by Teleflex, made from alloy steel with a machined finish and zinc plating for exterior protection