{"product_id":"sierra-18-2750-exhaust-bellows-with-clamp-replaces-mercury-18654a1-32734a3-fits-mercruiser-mc-i-r-mr-alpha-one-gen-ii-bravo-blackhawk-vazer-1963-newer","title":"Sierra 18-2750 Exhaust Bellows, Replaces Mercury Marine 18654A1 32734A3, Fits Mercruiser Alpha One Gen II, Bravo I\/II\/III, Blackhawk","description":"\u003cp\u003eThe Sierra 18-2750 Exhaust Bellows is a round, clamp-on replacement bellows for Mercruiser sterndrive exhaust systems. It is used to seal the exhaust passage between the drive unit and the transom on applicable Mercruiser drives, and a mounting clamp is included so the bellows can be installed as a complete unit. The bellows measures 5.2 inches L x 3.8 inches W and weighs 0.44 pounds.\u003c\/p\u003e\u003cp\u003eThis part fits Mercruiser Alpha One Gen II drives from 1991 and newer (serial number 0D469859 and up), Mercruiser Bravo I\/II\/III drives from 1988 and newer (serial number 0B664190 and up), and Mercruiser Blackhawk drives from 1994-1995 (serial number 0F18677 and up). It is a direct equivalent for Mercury Marine part number 18654A1 and part number 32734A3, so it can be ordered as a like-for-like replacement using either of those reference numbers. As with other exhaust bellows, this component is a wear item that should be inspected periodically and replaced if it shows cracking, hardening, or splitting, since a failed exhaust bellows can allow water intrusion into the boat.\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 18-2750\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercruiser Bellows\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 5.2 inches L x 3.8 inches W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.44 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Type:\u003c\/strong\u003e Clamp-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Exhaust Bellows, Clamp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Equivalent Part Number:\u003c\/strong\u003e 32734A3, MERCURY MARINE 18654A1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercruiser Alpha One Gen II, 1991 and Newer, S\/N 0D469859 and Up\u003c\/li\u003e\n\u003cli\u003eMercruiser Bravo I\/II\/III, 1988 and Newer, S\/N 0B664190 and Up\u003c\/li\u003e\n\u003cli\u003eMercruiser Blackhawk, 1994-1995, S\/N 0F18677 and Up\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury Marine 18654A1\u003c\/li\u003e\n\u003cli\u003e32734A3\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2750 exhaust bellows fit?\u003c\/strong\u003e The 18-2750 fits Mercruiser Alpha One Gen II drives from 1991 and newer (S\/N 0D469859 and up), Mercruiser Bravo I\/II\/III drives from 1988 and newer (S\/N 0B664190 and up), and Mercruiser Blackhawk drives from 1994-1995 (S\/N 0F18677 and up).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2750 a direct replacement for Mercury Marine 18654A1?\u003c\/strong\u003e Yes, part number 18-2750 is a direct equivalent for Mercury Marine 18654A1 and can be ordered in its place.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-2750 cross-reference to 32734A3?\u003c\/strong\u003e Yes, 32734A3 is listed as an OEM equivalent number for the Sierra 18-2750 exhaust bellows.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-2750 exhaust bellows?\u003c\/strong\u003e This bellows measures 5.2 inches in length by 3.8 inches in width.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2750 exhaust bellows weigh?\u003c\/strong\u003e The 18-2750 weighs 0.44 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2750 come with a clamp?\u003c\/strong\u003e Yes, the Sierra 18-2750 exhaust bellows package includes a mounting clamp along with the bellows itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat shape is the 18-2750 exhaust bellows?\u003c\/strong\u003e The 18-2750 is a round exhaust bellows with a clamp-on installation design.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-2750 fit an Alpha One Gen I drive?\u003c\/strong\u003e No, the 18-2750 is specified for Alpha One Gen II drives (1991 and newer, S\/N 0D469859 and up), not the earlier Gen I generation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-2750 fit Mercruiser Bravo III drives?\u003c\/strong\u003e Yes, 18-2750 is listed for Bravo I\/II\/III drives, 1988 and newer, S\/N 0B664190 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat years of Blackhawk drives use the 18-2750 bellows?\u003c\/strong\u003e The 18-2750 fits Mercruiser Blackhawk drives built in 1994-1995, S\/N 0F18677 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would I need to replace an exhaust bellows like the 18-2750?\u003c\/strong\u003e An exhaust bellows seals the exhaust path on the sterndrive, and the 18-2750 should be replaced if the bellows shows cracking, hardening, or splitting to prevent water intrusion.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the 18-2750 exhaust bellows installed?\u003c\/strong\u003e The 18-2750 is a clamp-on bellows, using the included clamp to secure it in place on the applicable Mercruiser Alpha One Gen II, Bravo I\/II\/III, or Blackhawk drive.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988111241435,"sku":"SIE-18-2750","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-1__06387.1772718313.500.750.jpg?v=1785188420","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-2750-exhaust-bellows-with-clamp-replaces-mercury-18654a1-32734a3-fits-mercruiser-mc-i-r-mr-alpha-one-gen-ii-bravo-blackhawk-vazer-1963-newer","provider":"Good Vibes Marina","version":"1.0","type":"link"}