{"title":"MerCruiser Blackhawk Sterndrive — 1994–1995 · 0F186717 \u0026 UP · Transom \/ Bell Housing","description":"\u003cdiv class=\"model-catalog\"\u003e\n\u003cp\u003e\u003ca href=\"\/collections\/mercruiser-sterndrive\"\u003eBack to MerCruiser Sterndrive\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the application and restrictions below with your engine or drive before ordering.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eCatalog reference\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/transom-bellows-seal-kit-for-mercruiser-bravo-i-ii-iii-30-803100t1-gh-marine\"\u003eTransom Bellows Seal Kit for MerCruiser Bravo I \/ II \/ III — 30-803100T1 | GH Marine\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eYear: 1994–1995; Serial: 0F186717 \u0026amp; UP\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"catalog-reference\"\u003eCatalog parts list\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e","products":[{"product_id":"transom-bellows-seal-kit-for-mercruiser-bravo-i-ii-iii-30-803100t1-gh-marine","title":"Transom Bellows Seal Kit for MerCruiser Bravo I \/ II \/ III — 30-803100T1 | GH Marine","description":"\u003cdiv style=\"width:100%;max-width:920px;margin:0 auto;box-sizing:border-box;font-family:Arial,Helvetica,sans-serif;font-size:16px;line-height:1.75;color:#263c37;background:#ffffff;overflow-wrap:anywhere;\"\u003e\n  \u003csection style=\"margin:0;padding:26px 24px;border-top:3px solid #234f42;border-bottom:1px solid #d6dfd9;background:#f3f6f2;box-sizing:border-box;\"\u003e\n    \u003cp style=\"margin:0 0 12px;color:#315a4b;font-size:12px;font-weight:700;letter-spacing:1.4px;line-height:1.6;text-transform:uppercase;\"\u003eGH MARINE \/ BELLOWS \u0026amp; RELATED PARTS\u003c\/p\u003e\n    \u003ch2 style=\"margin:0 0 16px;color:#234f42;font-family:Georgia,Times New Roman,serif;font-size:25px;font-weight:400;line-height:1.3;\"\u003eAbout this part\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eThis transom bellows seal kit is intended for transom bellows and seal service on specified MerCruiser Bravo I, Bravo II, Bravo III, and Blackhawk sterndrives. Fitment depends on the sterndrive model, model year, and serial number range rather than the engine alone. When comparing reference kits, verify both the drive serial number and the required gimbal-bearing version before ordering.\u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0;padding:30px 0;border-bottom:1px solid #d6dfd9;\"\u003e\n    \u003ch2 style=\"margin:0 0 16px;color:#234f42;font-family:Georgia,Times New Roman,serif;font-size:25px;font-weight:400;line-height:1.3;\"\u003eMatch the application\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eThis transom bellows seal kit applies to MerCruiser Bravo I, Bravo II, and Bravo III sterndrives from 1988 and up within serial number range 0B664190 and up, as well as MerCruiser Blackhawk sterndrives from 1994–1995 within serial number range 0F186717 and up.\u003c\/p\u003e\n    \u003cp style=\"margin:0 0 16px;color:#52665e;font-size:15px;line-height:1.75;\"\u003eIdentify the sterndrive assembly rather than just the engine model. Check the drive model designation, production year, and exact serial number on the drive housing or transom assembly tag against the records below.\u003c\/p\u003e\n    \u003cul style=\"list-style:none;margin:0;padding:0;\"\u003e\n      \u003cli style=\"margin:0;padding:16px 0;border-top:1px solid #d6dfd9;\"\u003e\n        \u003cp style=\"margin:0 0 4px;color:#234f42;font-size:17px;font-weight:700;line-height:1.5;\"\u003eMerCruiser · Bravo I\u003c\/p\u003e\n        \u003cp style=\"margin:0;color:#263c37;font-size:15px;line-height:1.8;\"\u003e\u003cstrong\u003eYear:\u003c\/strong\u003e 1988 \u0026amp; Up\u003c\/p\u003e\n        \u003cp style=\"margin:0;color:#263c37;font-size:15px;line-height:1.8;\"\u003e\u003cstrong\u003eSerial number:\u003c\/strong\u003e 0B664190 \u0026amp; Up\u003c\/p\u003e\n        \u003cp style=\"margin:0;color:#263c37;font-size:15px;line-height:1.8;\"\u003eFor MerCruiser Bravo I sterndrives within the stated year and serial number boundary.\u003c\/p\u003e\n        \u003cp style=\"margin:6px 0 0;color:#315a4b;font-size:13px;font-weight:700;line-height:1.6;\"\u003eApplication match\u003c\/p\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"margin:0;padding:16px 0;border-top:1px solid #d6dfd9;\"\u003e\n        \u003cp style=\"margin:0 0 4px;color:#234f42;font-size:17px;font-weight:700;line-height:1.5;\"\u003eMerCruiser · Bravo II\u003c\/p\u003e\n        \u003cp style=\"margin:0;color:#263c37;font-size:15px;line-height:1.8;\"\u003e\u003cstrong\u003eYear:\u003c\/strong\u003e 1988 \u0026amp; Up\u003c\/p\u003e\n        \u003cp style=\"margin:0;color:#263c37;font-size:15px;line-height:1.8;\"\u003e\u003cstrong\u003eSerial number:\u003c\/strong\u003e 0B664190 \u0026amp; Up\u003c\/p\u003e\n        \u003cp style=\"margin:0;color:#263c37;font-size:15px;line-height:1.8;\"\u003eFor MerCruiser Bravo II sterndrives within the stated year and serial number boundary.\u003c\/p\u003e\n        \u003cp style=\"margin:6px 0 0;color:#315a4b;font-size:13px;font-weight:700;line-height:1.6;\"\u003eApplication match\u003c\/p\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"margin:0;padding:16px 0;border-top:1px solid #d6dfd9;\"\u003e\n        \u003cp style=\"margin:0 0 4px;color:#234f42;font-size:17px;font-weight:700;line-height:1.5;\"\u003eMerCruiser · Bravo III\u003c\/p\u003e\n        \u003cp style=\"margin:0;color:#263c37;font-size:15px;line-height:1.8;\"\u003e\u003cstrong\u003eYear:\u003c\/strong\u003e 1988 \u0026amp; Up\u003c\/p\u003e\n        \u003cp style=\"margin:0;color:#263c37;font-size:15px;line-height:1.8;\"\u003e\u003cstrong\u003eSerial number:\u003c\/strong\u003e 0B664190 \u0026amp; Up\u003c\/p\u003e\n        \u003cp style=\"margin:0;color:#263c37;font-size:15px;line-height:1.8;\"\u003eFor MerCruiser Bravo III sterndrives within the stated year and serial number boundary.\u003c\/p\u003e\n        \u003cp style=\"margin:6px 0 0;color:#315a4b;font-size:13px;font-weight:700;line-height:1.6;\"\u003eApplication match\u003c\/p\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"margin:0;padding:16px 0;border-top:1px solid #d6dfd9;\"\u003e\n        \u003cp style=\"margin:0 0 4px;color:#234f42;font-size:17px;font-weight:700;line-height:1.5;\"\u003eMerCruiser · Blackhawk\u003c\/p\u003e\n        \u003cp style=\"margin:0;color:#263c37;font-size:15px;line-height:1.8;\"\u003e\u003cstrong\u003eYear:\u003c\/strong\u003e 1994-95\u003c\/p\u003e\n        \u003cp style=\"margin:0;color:#263c37;font-size:15px;line-height:1.8;\"\u003e\u003cstrong\u003eSerial number:\u003c\/strong\u003e 0F186717 \u0026amp; Up\u003c\/p\u003e\n        \u003cp style=\"margin:0;color:#263c37;font-size:15px;line-height:1.8;\"\u003eFor 1994–1995 MerCruiser Blackhawk drives within the stated serial number boundary.\u003c\/p\u003e\n        \u003cp style=\"margin:6px 0 0;color:#315a4b;font-size:13px;font-weight:700;line-height:1.6;\"\u003eApplication match\u003c\/p\u003e\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0;padding:30px 0;border-bottom:1px solid #d6dfd9;\"\u003e\n    \u003ch2 style=\"margin:0 0 16px;color:#234f42;font-family:Georgia,Times New Roman,serif;font-size:25px;font-weight:400;line-height:1.3;\"\u003eNumbers to compare\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eUse the reference numbers below to help identify your service kit or individual related references. Similar or shared cross-reference numbers do not automatically mean all kit versions or sub-component packages are interchangeable across every configuration.\u003c\/p\u003e\n\n    \u003ch3 style=\"margin:20px 0 8px;color:#234f42;font-size:17px;font-weight:700;line-height:1.5;\"\u003ePrimary OEM kit references\u003c\/h3\u003e\n    \u003ctable style=\"width:100%;table-layout:fixed;border-collapse:collapse;text-align:left;font-size:15px;\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:12px 10px 12px 0;border-bottom:1px solid #d6dfd9;text-align:left;vertical-align:top;color:#52665e;font-weight:400;\"\u003eMercury Mariner \/ Quicksilver\u003c\/th\u003e\n          \u003ctd style=\"padding:12px 0 12px 10px;border-bottom:1px solid #d6dfd9;vertical-align:top;color:#263c37;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e30-803100t 1\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:12px 10px 12px 0;border-bottom:1px solid #d6dfd9;text-align:left;vertical-align:top;color:#52665e;font-weight:400;\"\u003eMercury \/ Mercury Mariner\u003c\/th\u003e\n          \u003ctd style=\"padding:12px 0 12px 10px;border-bottom:1px solid #d6dfd9;vertical-align:top;color:#263c37;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e30-803100T1, 30-803100T 1, 30803100T1, 803100T1\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n\n    \u003ch3 style=\"margin:20px 0 8px;color:#234f42;font-size:17px;font-weight:700;line-height:1.5;\"\u003eAftermarket kit references\u003c\/h3\u003e\n    \u003ctable style=\"width:100%;table-layout:fixed;border-collapse:collapse;text-align:left;font-size:15px;\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:12px 10px 12px 0;border-bottom:1px solid #d6dfd9;text-align:left;vertical-align:top;color:#52665e;font-weight:400;\"\u003eSierra \/ Sierra Marine\u003c\/th\u003e\n          \u003ctd style=\"padding:12px 0 12px 10px;border-bottom:1px solid #d6dfd9;vertical-align:top;color:#263c37;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e18-8219, 18-8212-1, 18-8212\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:12px 10px 12px 0;border-bottom:1px solid #d6dfd9;text-align:left;vertical-align:top;color:#52665e;font-weight:400;\"\u003eSEI Marine\u003c\/th\u003e\n          \u003ctd style=\"padding:12px 0 12px 10px;border-bottom:1px solid #d6dfd9;vertical-align:top;color:#263c37;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e9A-121\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:12px 10px 12px 0;border-bottom:1px solid #d6dfd9;text-align:left;vertical-align:top;color:#52665e;font-weight:400;\"\u003eMallory \/ Mallory Marine\u003c\/th\u003e\n          \u003ctd style=\"padding:12px 0 12px 10px;border-bottom:1px solid #d6dfd9;vertical-align:top;color:#263c37;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e9-72903\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:12px 10px 12px 0;border-bottom:1px solid #d6dfd9;text-align:left;vertical-align:top;color:#52665e;font-weight:400;\"\u003eGLM\u003c\/th\u003e\n          \u003ctd style=\"padding:12px 0 12px 10px;border-bottom:1px solid #d6dfd9;vertical-align:top;color:#263c37;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e21961\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n\n    \u003ch3 style=\"margin:20px 0 8px;color:#234f42;font-size:17px;font-weight:700;line-height:1.5;\"\u003eAdditional associated \u0026amp; limited-relation references\u003c\/h3\u003e\n    \u003cp style=\"margin:0 0 16px;color:#52665e;font-size:15px;line-height:1.75;\"\u003eThe following numbers appear in the cross-reference records for this listing. Some numbers may represent individual sub-components, related service items, or alternate kit versions rather than a complete direct equivalent to the full kit.\u003c\/p\u003e\n    \u003ctable style=\"width:100%;table-layout:fixed;border-collapse:collapse;text-align:left;font-size:15px;\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:12px 10px 12px 0;border-bottom:1px solid #d6dfd9;text-align:left;vertical-align:top;color:#52665e;font-weight:400;\"\u003eMercury Mariner\u003c\/th\u003e\n          \u003ctd style=\"padding:12px 0 12px 10px;border-bottom:1px solid #d6dfd9;vertical-align:top;color:#263c37;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e8M0095485, 78458A1, 74639A2, 30-862540A3, 32-43437, 16755Q1, 86840A3, 18654A1, 8M0124227, 41802, 41674, 45518A3, 43433, 14705, 74639, 32734A3, 16755A1, 30-879194A01, 30-879194A02, 30-60794A4, 16755T1, 32-8M0090859\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:12px 10px 12px 0;border-bottom:1px solid #d6dfd9;text-align:left;vertical-align:top;color:#52665e;font-weight:400;\"\u003eSierra\u003c\/th\u003e\n          \u003ctd style=\"padding:12px 0 12px 10px;border-bottom:1px solid #d6dfd9;vertical-align:top;color:#263c37;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e18-21006, 18-2753-1, 18-2100, 18-2756, 18-2750, 18-2760, 18-3603, 18-2615\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:12px 10px 12px 0;border-bottom:1px solid #d6dfd9;text-align:left;vertical-align:top;color:#52665e;font-weight:400;\"\u003eGLM\u003c\/th\u003e\n          \u003ctd style=\"padding:12px 0 12px 10px;border-bottom:1px solid #d6dfd9;vertical-align:top;color:#263c37;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e21965, 21906, 39640, 47230, 89080, 89100, 89140\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:12px 10px 12px 0;border-bottom:1px solid #d6dfd9;text-align:left;vertical-align:top;color:#52665e;font-weight:400;\"\u003eMallory\u003c\/th\u003e\n          \u003ctd style=\"padding:12px 0 12px 10px;border-bottom:1px solid #d6dfd9;vertical-align:top;color:#263c37;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e9-72905\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:12px 10px 12px 0;border-bottom:1px solid #d6dfd9;text-align:left;vertical-align:top;color:#52665e;font-weight:400;\"\u003eOther reference\u003c\/th\u003e\n          \u003ctd style=\"padding:12px 0 12px 10px;border-bottom:1px solid #d6dfd9;vertical-align:top;color:#263c37;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003eRL21961\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n\n    \u003cdiv style=\"margin:18px 0 0;padding:12px 16px;border-left:3px solid #8b6a38;background:#faf7ef;color:#55452b;box-sizing:border-box;\"\u003e\n      When comparing kits referenced as Sierra \u003cspan style=\"font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e18-8219\u003c\/span\u003e and \u003cspan style=\"font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e18-8212-1\u003c\/span\u003e, confirm the gimbal-bearing version and the actual component list. Sierra identifies \u003cspan style=\"font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e18-8219\u003c\/span\u003e as a sealed-bearing version and \u003cspan style=\"font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e18-8212-1\u003c\/span\u003e as a greasable-bearing version. Do not assume their packages are identical.\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0;padding:30px 0;border-bottom:1px solid #d6dfd9;\"\u003e\n    \u003ch2 style=\"margin:0 0 16px;color:#234f42;font-family:Georgia,Times New Roman,serif;font-size:25px;font-weight:400;line-height:1.3;\"\u003eTechnical details\u003c\/h2\u003e\n    \u003ctable style=\"width:100%;table-layout:fixed;border-collapse:collapse;text-align:left;font-size:15px;\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:12px 10px 12px 0;border-bottom:1px solid #d6dfd9;text-align:left;vertical-align:top;color:#52665e;font-weight:400;\"\u003eProduct type\u003c\/th\u003e\n          \u003ctd style=\"padding:12px 0 12px 10px;border-bottom:1px solid #d6dfd9;vertical-align:top;color:#263c37;\"\u003eTransom Bellows Seal Kit\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:12px 10px 12px 0;border-bottom:1px solid #d6dfd9;text-align:left;vertical-align:top;color:#52665e;font-weight:400;\"\u003eBrand\u003c\/th\u003e\n          \u003ctd style=\"padding:12px 0 12px 10px;border-bottom:1px solid #d6dfd9;vertical-align:top;color:#263c37;\"\u003eGH Marine\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:12px 10px 12px 0;border-bottom:1px solid #d6dfd9;text-align:left;vertical-align:top;color:#52665e;font-weight:400;\"\u003eTarget assembly\u003c\/th\u003e\n          \u003ctd style=\"padding:12px 0 12px 10px;border-bottom:1px solid #d6dfd9;vertical-align:top;color:#263c37;\"\u003eMerCruiser Stern \/ Out Drive (Bravo I, Bravo II, Bravo III, Blackhawk)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:12px 10px 12px 0;border-bottom:1px solid #d6dfd9;text-align:left;vertical-align:top;color:#52665e;font-weight:400;\"\u003eService function\u003c\/th\u003e\n          \u003ctd style=\"padding:12px 0 12px 10px;border-bottom:1px solid #d6dfd9;vertical-align:top;color:#263c37;\"\u003eTransom bellows and seal service\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:12px 10px 12px 0;border-bottom:1px solid #d6dfd9;text-align:left;vertical-align:top;color:#52665e;font-weight:400;\"\u003ePrimary OEM reference\u003c\/th\u003e\n          \u003ctd style=\"padding:12px 0 12px 10px;border-bottom:1px solid #d6dfd9;vertical-align:top;color:#263c37;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e30-803100T1\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0;padding:30px 0;border-bottom:1px solid #d6dfd9;\"\u003e\n    \u003ch2 style=\"margin:0 0 16px;color:#234f42;font-family:Georgia,Times New Roman,serif;font-size:25px;font-weight:400;line-height:1.3;\"\u003eSupplied contents\u003c\/h2\u003e\n    \u003cul style=\"margin:0;padding-left:22px;\"\u003e\n      \u003cli style=\"margin:0 0 10px;\"\u003eTransom bellows seal kit\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003cp style=\"margin:14px 0 0;color:#52665e;font-size:15px;line-height:1.75;\"\u003eIf your repair requires a specific gimbal-bearing design (such as a sealed versus greasable bearing) or specific individual sub-components, confirm the exact package contents before disassembly.\u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0;padding:30px 0;border-bottom:1px solid #d6dfd9;\"\u003e\n    \u003ch2 style=\"margin:0 0 16px;color:#234f42;font-family:Georgia,Times New Roman,serif;font-size:25px;font-weight:400;line-height:1.3;\"\u003eWorkshop sequence\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eGeneral workshop guidance only; use the service procedure for your exact drive or engine configuration.\u003c\/p\u003e\n    \u003col style=\"margin:0;padding-left:22px;list-style-type:decimal;\"\u003e\n      \u003cli style=\"margin:0 0 10px;\"\u003eVerify the sterndrive model (Bravo I, II, III, or Blackhawk), production year, and serial number against the service manual and your parts selection before starting work.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 10px;\"\u003eIsolate the battery and propulsion systems, secure the vessel out of the water, and properly support the sterndrive assembly for removal according to factory instructions.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 10px;\"\u003eBefore removing existing bellows, seals, and hoses, note the routing, fold orientation, clamp screw positions, and connection interfaces on the gimbal housing and bell housing.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 10px;\"\u003eClean and inspect all mating flanges, grooves, passages, and adjacent transom assembly surfaces for corrosion, pitting, or old adhesive residue.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 10px;\"\u003eCheck the condition and design of the gimbal bearing (greasable vs. sealed configuration) and verify alignment with the grease passage or plug configuration on the housing.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 10px;\"\u003eFit the new bellows and seals without twisting or pinching the convolutions, following the MerCruiser service manual for required adhesives, special tools, and clamp positioning.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 10px;\"\u003eComplete sterndrive reassembly, check drive alignment and shift operation, and inspect all transom seals for proper seating before returning the vessel to service.\u003c\/li\u003e\n    \u003c\/ol\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0;padding:30px 0;border-bottom:1px solid #d6dfd9;\"\u003e\n    \u003ch2 style=\"margin:0 0 16px;color:#234f42;font-family:Georgia,Times New Roman,serif;font-size:25px;font-weight:400;line-height:1.3;\"\u003eBefore reassembly\u003c\/h2\u003e\n    \u003cul style=\"margin:0;padding-left:22px;\"\u003e\n      \u003cli style=\"margin:0 0 10px;\"\u003eConfirm that your sterndrive serial number meets the minimum serial threshold (\u003cspan style=\"font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e0B664190 \u0026amp; Up\u003c\/span\u003e for Bravo I\/II\/III; \u003cspan style=\"font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e0F186717 \u0026amp; Up\u003c\/span\u003e for 1994–1995 Blackhawk).\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 10px;\"\u003eCompare the removed components and reference numbers (\u003cspan style=\"font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e30-803100T1\u003c\/span\u003e and related cross-references) against the supplied parts prior to applying any sealants or adhesives.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 10px;\"\u003eVerify the gimbal bearing type required for your transom assembly, especially when cross-referencing between sealed (\u003cspan style=\"font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e18-8219\u003c\/span\u003e) and greasable (\u003cspan style=\"font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;\"\u003e18-8212-1\u003c\/span\u003e) kit designations.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 10px;\"\u003eInspect the bell housing and gimbal ring mounting surfaces, water passage interfaces, and shift cable routing path according to your drive service manual.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0;padding:30px 0;border-bottom:1px solid #d6dfd9;\"\u003e\n    \u003ch2 style=\"margin:0 0 16px;color:#234f42;font-family:Georgia,Times New Roman,serif;font-size:25px;font-weight:400;line-height:1.3;\"\u003eQuestions from the workshop\u003c\/h2\u003e\n    \u003cdiv style=\"margin:0;padding:16px 0;border-top:1px solid #d6dfd9;\"\u003e\n      \u003ch3 style=\"margin:20px 0 8px;color:#234f42;font-size:17px;font-weight:700;line-height:1.5;\"\u003eWhich MerCruiser sterndrives match this transom bellows seal kit?\u003c\/h3\u003e\n      \u003cp style=\"margin:0 0 14px;\"\u003eThis kit is listed for MerCruiser Bravo I, Bravo II, and Bravo III sterndrives from 1988 and up with serial numbers 0B664190 and up, and for 1994–1995 Blackhawk drives with serial numbers 0F186717 and up.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin:0;padding:16px 0;border-top:1px solid #d6dfd9;\"\u003e\n      \u003ch3 style=\"margin:20px 0 8px;color:#234f42;font-size:17px;font-weight:700;line-height:1.5;\"\u003eCan I select this kit using only my boat's engine model or horsepower?\u003c\/h3\u003e\n      \u003cp style=\"margin:0 0 14px;\"\u003eNo. Transom bellows and seals match the sterndrive and transom assembly rather than the engine block. Always identify the exact drive model (Bravo I, II, III, or Blackhawk), year, and drive serial number.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin:0;padding:16px 0;border-top:1px solid #d6dfd9;\"\u003e\n      \u003ch3 style=\"margin:20px 0 8px;color:#234f42;font-size:17px;font-weight:700;line-height:1.5;\"\u003eWhat is the difference between Sierra references 18-8219 and 18-8212-1?\u003c\/h3\u003e\n      \u003cp style=\"margin:0 0 14px;\"\u003eSierra identifies 18-8219 as a sealed-bearing version and 18-8212-1 as a greasable-bearing version. When comparing kits referenced under these numbers, confirm the gimbal-bearing version and actual component list rather than assuming both packages are identical.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin:0;padding:16px 0;border-top:1px solid #d6dfd9;\"\u003e\n      \u003ch3 style=\"margin:20px 0 8px;color:#234f42;font-size:17px;font-weight:700;line-height:1.5;\"\u003eDo all the listed Mercury and aftermarket cross-reference numbers represent the full kit?\u003c\/h3\u003e\n      \u003cp style=\"margin:0 0 14px;\"\u003eNot necessarily. While 30-803100T1, 18-8219, 18-8212-1, 18-8212, 9A-121, 9-72903, and 21961 are primary kit references, many additional numbers in the cross-reference table correspond to individual sub-components or related service parts. Check the specific part number against your manual if you are matching a single component.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin:0;padding:16px 0;border-top:1px solid #d6dfd9;\"\u003e\n      \u003ch3 style=\"margin:20px 0 8px;color:#234f42;font-size:17px;font-weight:700;line-height:1.5;\"\u003eAre installation tools or bellows adhesives included with this kit?\u003c\/h3\u003e\n      \u003cp style=\"margin:0 0 14px;\"\u003eConfirm any installation tools, adhesives or lubricants needed for your repair before ordering. Follow your MerCruiser service manual for the required tools and sealing compounds.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0;padding:30px 0;border-bottom:1px solid #d6dfd9;\"\u003e\n    \u003ch2 style=\"margin:0 0 16px;color:#234f42;font-family:Georgia,Times New Roman,serif;font-size:25px;font-weight:400;line-height:1.3;\"\u003eAbout GH Marine\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eGH Marine focuses on bellows and related marine service parts. Compare the application details, reference numbers and supplied contents together to select the part for your repair.\u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0;padding:30px 0;border-bottom:1px solid #d6dfd9;\"\u003e\n    \u003ch2 style=\"margin:0 0 16px;color:#234f42;font-family:Georgia,Times New Roman,serif;font-size:25px;font-weight:400;line-height:1.3;\"\u003eDelivery information\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eEstimated delivery: 7–15 calendar days.\u003c\/p\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003ePlanning a repair for a particular date? Contact GH Marine before ordering to discuss delivery to your destination. Check that your delivery address and contact details are complete when placing your order.\u003c\/p\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eFor a delivery question about an existing order, have your order number and delivery destination ready when you contact GH Marine.\u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0;padding:30px 0;border-bottom:1px solid #d6dfd9;\"\u003e\n    \u003ch2 style=\"margin:0 0 16px;color:#234f42;font-family:Georgia,Times New Roman,serif;font-size:25px;font-weight:400;line-height:1.3;\"\u003eWarranty and assistance\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eContact GH Marine for the warranty terms applicable to this product and assistance with a product issue.\u003c\/p\u003e\n  \u003c\/section\u003e\n\u003c\/div\u003e","brand":"GH Marine","offers":[{"title":"Default Title","offer_id":52012051824886,"sku":"18B5001","price":89.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/5781\/8102\/files\/transom-bellows-seal-kit-for-mercruiser-bravo-i-ii-iii-30-803100t1-gh-marine-1.jpg?v=1792603039"}],"url":"https:\/\/gh-marine.com\/collections\/mercruiser-blackhawk-sterndrive-19941995-0f186717-up-transom-bell-housing.oembed","provider":"GH Marine","version":"1.0","type":"link"}