{"product_id":"9412a21-mercury-mercruiser-upper-unit-gear-case-83-90-1-65r-5-0l-4-3l-3-7l","title":"9412A21 Mercury Mercruiser Upper Unit Gear Case 83-90 1.65R 5.0L 4.3L 3.7L","description":"\u003cp\u003e\u003cstrong\u003e9412A21 Mercury Mercruiser Upper Unit Gear Case\u003c\/strong\u003e for 1983–1990 models with 1.65R ratio, compatible with 5.0L, 4.3L, and 3.7L engines. This OEM-style replacement gear case delivers reliable shift and thrust performance for your Mercruiser sterndrive.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e1.65R gear ratio for balanced acceleration and cruising\u003c\/li\u003e\n\u003cli\u003eFits 5.0L, 4.3L, and 3.7L engines (1983–1990)\u003c\/li\u003e\n\u003cli\u003eDirect replacement for original upper unit assembly\u003c\/li\u003e\n\u003cli\u003eSealed construction prevents water intrusion\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eRestore full steering and power transmission without compatibility guesswork.\u003c\/p\u003e","brand":"eBay Import","offers":[{"title":"Default Title","offer_id":46019667853414,"sku":null,"price":1019.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0703\/4630\/9734\/files\/s-l100_02954677-6416-47d5-a362-85b1dc15c406.jpg?v=1784931759","url":"https:\/\/findmypart.shop\/products\/9412a21-mercury-mercruiser-upper-unit-gear-case-83-90-1-65r-5-0l-4-3l-3-7l","provider":"Find My Part","version":"1.0","type":"link"}