{"product_id":"sierra-18-7153-9-o-ring-5-pack-replaces-oem-911851-3852565-for-mercury-outboard-powerheads","title":"Sierra O-Ring 18-7153-9 for Mercury Stern Drives (Alpha I, Alpha I SS, Bravo I\/II), Pack of 5","description":"\u003cp\u003eThe Sierra 18-7153-9 O-Ring is sold in a pack of 5 and is used on a range of Mercury stern drive units, including R\/MR\/Alpha I, Alpha I SS, Bravo I\/II, IA\/IB\/IC, and II drives, depending on the serial number of the unit. Each application on these drives requires 2 of these o-rings, so a single pack of 5 covers more than one repair with one spare o-ring left over. The o-ring is a small, lightweight sealing component at 0.02 pounds, designed to be used as part of a routine seal replacement or rebuild on the applicable stern drive.\u003c\/p\u003e\u003cp\u003eBecause fitment depends on the specific stern drive model and its serial number range, buyers should confirm their drive model and serial number before ordering to ensure the 18-7153-9 o-ring is the correct part for their unit. This o-ring is identified by the manufacturer with the internal description code UJ.\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 18-7153-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 5 o-rings per pack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity Required Per Application:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282165321\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercury Outboard Powerhead Seals \u0026amp; O-Rings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Seal Description Code:\u003c\/strong\u003e UJ\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStern Drive Fitment:\u003c\/strong\u003e R\/MR\/Alpha I, Alpha I SS, Bravo I\/II, IA\/IB\/IC, II\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eR\/MR\/Alpha I stern drive, serial number 6225577 and up\u003c\/li\u003e\n\u003cli\u003eAlpha I SS stern drive, all serial numbers\u003c\/li\u003e\n\u003cli\u003eBravo I\/II stern drive, serial number B664190 and up\u003c\/li\u003e\n\u003cli\u003eIA, IB, IC stern drive, serial numbers 1684188 through 2065189\u003c\/li\u003e\n\u003cli\u003eII stern drive, serial numbers 2398798 through 2671321\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eNo cross-reference numbers listed\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eHow many o-rings come in the Sierra 18-7153-9 pack?\u003c\/strong\u003e The Sierra 18-7153-9 o-ring is sold in a pack of 5.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many of these o-rings does one repair need?\u003c\/strong\u003e Each stern drive application listed for the 18-7153-9 o-ring requires 2 o-rings, so one pack of 5 is enough for a repair with one spare left over.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich stern drives use the 18-7153-9 o-ring?\u003c\/strong\u003e This o-ring fits the R\/MR\/Alpha I, Alpha I SS, Bravo I\/II, IA\/IB\/IC, and II Mercury stern drives, with fitment depending on the drive's serial number range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-7153-9 o-ring fit the Alpha I SS drive?\u003c\/strong\u003e Yes, the Alpha I SS stern drive uses the 18-7153-9 o-ring across all serial numbers, requiring 2 per application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat serial number range applies to the R\/MR\/Alpha I fitment?\u003c\/strong\u003e For the R\/MR\/Alpha I stern drive, the Sierra 18-7153-9 o-ring applies to serial number 6225577 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-7153-9 o-ring compatible with Bravo I\/II drives?\u003c\/strong\u003e Yes, Bravo I\/II stern drives with serial number B664190 and up use the 18-7153-9 o-ring, 2 per application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the serial number range for the IA, IB, IC fitment?\u003c\/strong\u003e On IA, IB, and IC stern drives, the 18-7153-9 o-ring applies to serial numbers 1684188 through 2065189.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this o-ring fit the II stern drive?\u003c\/strong\u003e Yes, the II stern drive uses the 18-7153-9 o-ring on serial numbers 2398798 through 2671321.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-7153-9 o-ring pack weigh?\u003c\/strong\u003e The Sierra 18-7153-9 o-ring pack weighs 0.02 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-7153-9 o-ring pack?\u003c\/strong\u003e The UPC for this o-ring pack is 808282165321.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the manufacturer's description code for this o-ring?\u003c\/strong\u003e The 18-7153-9 o-ring is identified internally with the description code UJ.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-7153-9 a genuine Sierra part?\u003c\/strong\u003e Yes, part number 18-7153-9 is a Sierra-branded o-ring sold as a pack of 5.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988364636379,"sku":"SIE-18-7153-9","price":8.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-7153-9__25184.1737880984.500.750.jpg?v=1785329173","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-7153-9-o-ring-5-pack-replaces-oem-911851-3852565-for-mercury-outboard-powerheads","provider":"Good Vibes Marina","version":"1.0","type":"link"}