{"product_id":"brand-new-mercury-mercruiser-alpha-one-gen-ii-lower-driveshaft-assembly-1969-1990","title":"Mercury Mercruiser Alpha One Gen II Lower Driveshaft Assembly (1991-Current)","description":"\u003cp dir=\"auto\"\u003eThis is a \u003cstrong\u003ebrand new\u003c\/strong\u003e genuine Mercury Lower driveshaft assembly (also known as the lower gearcase or lower unit) for Mercruiser Alpha One Generation II sterndrives, compatible with models from 1991 to present (serial numbers 0D494570 \u0026amp; higher). It includes a 2\u003cstrong\u003e-year manufacturer warranty\u003c\/strong\u003e for peace of mind.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eAvailable Gear Ratios:\u003c\/strong\u003e Please select your required gear ratio below:\u003c\/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.47:1\u003c\/strong\u003e – Commonly used with higher HP V8 engines (e.g., 5.7L\/350 and up, 220+ HP models)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.62:1\u003c\/strong\u003e – Commonly used with 4.3L V6 or lower HP V8 engines in standard applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.81:1\u003c\/strong\u003e – Commonly used with some 4.3L V6 models, especially earlier Gen II or heavier boats\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.00:1\u003c\/strong\u003e (or 1.94:1 equivalent) – Commonly used with 3.0L 4-cylinder engines (130-135 HP); note that 2.00:1 replaced 1.94:1 starting around 1998 for improved durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e This item is typically not stocked in-store and ships directly from the manufacturer for guaranteed freshness and quality.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eImportant Fitment Information:\u003c\/strong\u003e To ensure you receive the correct upper unit with the \u003cstrong\u003eproper gear ratio\u003c\/strong\u003e and full compatibility, please provide your sterndrive serial number and engine details (HP, cylinders, model\/year) from the transom bracket. We're here to help verify the exact match!\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eSpecial Note:\u003c\/strong\u003e The yoke\/input shaft design changed with Gen II models starting at serial number 0D494570. This upper unit is specifically for Gen II and is not compatible with earlier Gen I (\"R\" style or pre-1991) without potential modifications.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eIf you have any questions, feel free to email us at \u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e\u003ca href=\"mailto:orders@hawkeyemarine.net\"\u003eorders@hawkeyemarine.net\u003c\/a\u003e\u003c\/span\u003e or call 615-691-1433. Our team is ready to assist with your purchase.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis upper driveshaft assembly comes complete and ready for installation, with \u003cstrong\u003eno core charge required\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eAn optional \u003cstrong\u003e12-month extended warranty\u003c\/strong\u003e is available for an additional $540.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eWelcome to OBR Parts and Marine\u003c\/strong\u003e Since 1982, OBR has been the industry leader in providing new and remanufactured outboard powerheads, gearcases, and sterndrive units. Marine parts dealers across the nation trust us for top-quality components, prompt same-day shipping, and expert technical support. We're committed to getting you back on the water quickly and reliably!\u003c\/p\u003e","brand":"OBR Parts","offers":[{"title":"Gear Ratio 1.50 1.51 1.81 1.94","offer_id":52951934566673,"sku":"1065","price":2552.0,"currency_code":"USD","in_stock":true},{"title":"Gear Ratio 2.0 2.4","offer_id":52951934599441,"sku":"1066","price":2552.0,"currency_code":"USD","in_stock":true},{"title":"3 Year Warranty","offer_id":53369367232785,"sku":null,"price":3092.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0681\/1307\/2401\/files\/Lowergen2.png?v=1766068464","url":"https:\/\/hawkeyemarine.net\/products\/brand-new-mercury-mercruiser-alpha-one-gen-ii-lower-driveshaft-assembly-1969-1990","provider":"Hawkeye Marine, LLC","version":"1.0","type":"link"}