{"product_id":"sierra-18-0549-plug-off-cap-replaces-omc-909829-1-in-i-d-fits-v-8-stern-drives-inboards-1977-present","title":"Sierra 18-0549 Plug Off Cap, 1 Inch I.D., Replaces OMC 909829, V-8 Stern Drives and Inboards 1977 to Present","description":"\u003cp\u003eThe Sierra 18-0549 Plug Off Cap is a machined marine plug designed to seal a 1 inch inside-diameter opening on qualifying V-8 model stern drives and inboards built from 1977 to present. It is a direct replacement for OMC part number 909829, making it a straightforward swap when the original plug is damaged, corroded, or missing during service and inspection work. The cap is a simple, single-piece component with no moving parts, built to hold a reliable seal against water and fluid intrusion at its mounting location. Its compact size and light weight of 0.05 pounds make it an easy, low-cost item to keep on hand as a spare for routine maintenance. Buyers working on qualifying V-8 stern drive and inboard applications should confirm the 1 inch I.D. Opening size before ordering, since Sierra also offers the 18-0550 Plug Off Cap with a larger 1 1\/4 inch I.D. For the same application range but a different opening size. The 18-0549 carries UPC 030999874535 for easy identification when ordering or verifying stock.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-0549\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter:\u003c\/strong\u003e 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 4 x 1 x 5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999874535\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e V-8 Model Stern Drives and Inboards (1977 to present)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces:\u003c\/strong\u003e OMC 909829\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eV-8 Model Stern Drives and Inboards (1977 to present)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eOMC 909829\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-0549 Plug Off Cap?\u003c\/strong\u003e It is a machined plug off cap made by Sierra, part number 18-0549, used to seal a 1 inch inside-diameter opening on qualifying V-8 model stern drives and inboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the inside diameter of the 18-0549 plug off cap?\u003c\/strong\u003e The 18-0549 has a 1 inch inside diameter (I.D.).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines and drives does the Sierra 18-0549 fit?\u003c\/strong\u003e This cap fits V-8 model stern drives and inboards built from 1977 to present.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-0549 replace OMC part number 909829?\u003c\/strong\u003e Yes, the 18-0549 is a direct replacement for OMC 909829.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the Sierra 18-0549 and Sierra 18-0550?\u003c\/strong\u003e The 18-0549 has a 1 inch I.D. And replaces OMC 909829, while the 18-0550 has a larger 1 1\/4 inch I.D. And replaces OMC 909830; both cover V-8 model stern drives and inboards from 1977 to present but are separate part numbers, so the correct one depends on the opening size on your unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-0549 plug off cap weigh?\u003c\/strong\u003e It weighs 0.05 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-0549 a genuine Sierra part?\u003c\/strong\u003e Yes, the 18-0549 is manufactured under the Sierra brand and is not discontinued.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-0549 plug off cap?\u003c\/strong\u003e The UPC for this Sierra plug off cap is 030999874535.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the Sierra 18-0549 fit a 1 1\/4 inch opening?\u003c\/strong\u003e No, the 18-0549 is sized for a 1 inch I.D. Opening; a 1 1\/4 inch opening requires the Sierra 18-0550 instead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat years of V-8 stern drives and inboards does the 18-0549 cover?\u003c\/strong\u003e The 18-0549 plug off cap covers V-8 model stern drives and inboards from 1977 to present.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988077261019,"sku":"SIE-18-0549","price":11.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-0549_lg__47603.1558119978.500.750.jpg?v=1785188055","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-0549-plug-off-cap-replaces-omc-909829-1-in-i-d-fits-v-8-stern-drives-inboards-1977-present","provider":"Good Vibes Marina","version":"1.0","type":"link"}