{"product_id":"sierra-18-2760-exhaust-tube-replaces-mercruiser-78458a1-for-mercruiser-1-and-bravo-i-ii-iii-sterndrives","title":"Sierra 18-2760 Exhaust Tube - Replaces Mercruiser 78458A1, Fits Bravo I\/II\/III 1988 \u0026 Newer","description":"\u003cp\u003eThe Sierra 18-2760 Exhaust Tube is a machined replacement exhaust tube built for Mercruiser Bravo I, II, and III sterndrives. It directs exhaust flow through the drive unit and is manufactured to meet or exceed the fit, form, and function of the original equipment part it replaces. The tube ships with an 18-7314 clamp included, so the hardware needed for a proper connection is in the box.\u003c\/p\u003e\u003cp\u003eThis part is designed as a direct interchange for Mercruiser 78458A1 and 78458, as well as GLM 89150 and Mallory 9-72810, giving installers flexibility when sourcing a replacement for aging or corroded exhaust tubes. The exterior finish is machined for a consistent fit against mating exhaust components. At a compact 0.39 x 0.39 x 0.39 inches and 0.38 pounds, it is sized specifically for the Bravo I\/II\/III exhaust bellows connection point.\u003c\/p\u003e\u003cp\u003eFitment covers Bravo I, II, and III drives from 1988 and newer with serial number 0B664190 and up, as well as Blackhawk drives from 1994-1995 with serial number 0F18677 and up. Confirm the drive serial number range before ordering to ensure correct fitment.\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 18-2760\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Exhaust Tube\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.38 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Hardware:\u003c\/strong\u003e 18-7314 clamp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999313003\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e Mercruiser 78458A1, Mercruiser 78458, GLM 89150, Mallory 9-72810\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBravo I\/II\/III, 1988 \u0026amp; Newer, serial number 0B664190 \u0026amp; Up\u003c\/li\u003e\n\u003cli\u003eBlackhawk, 1994-1995, serial number 0F18677 \u0026amp; Up\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercruiser 78458A1\u003c\/li\u003e\n\u003cli\u003eMercruiser 78458\u003c\/li\u003e\n\u003cli\u003eGLM 89150\u003c\/li\u003e\n\u003cli\u003eMallory 9-72810\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2760 Exhaust Tube fit?\u003c\/strong\u003e It fits Mercruiser Bravo I, II, and III sterndrives built 1988 and newer with serial number 0B664190 and up, and Blackhawk drives from 1994-1995 with serial number 0F18677 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2760 a genuine Sierra part or aftermarket?\u003c\/strong\u003e The 18-2760 is a Sierra-manufactured replacement part, built to meet or exceed the original equipment exhaust tube it replaces rather than being a Mercruiser-branded OEM part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich OEM part numbers does the 18-2760 replace?\u003c\/strong\u003e The Sierra 18-2760 Exhaust Tube is designed to interchange with Mercruiser 78458A1 and 78458, GLM 89150, and Mallory 9-72810.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2760 exhaust tube come with a clamp?\u003c\/strong\u003e Yes, the Sierra 18-2760 ships with an 18-7314 clamp included, so no separate clamp purchase is needed for installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2760 Exhaust Tube weigh?\u003c\/strong\u003e The Sierra 18-2760 Exhaust Tube weighs 0.38 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-2760 exhaust tube?\u003c\/strong\u003e It measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material or finish does the 18-2760 have?\u003c\/strong\u003e The Sierra 18-2760 has a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-2760 fit a Bravo drive older than 1988?\u003c\/strong\u003e No, the Sierra 18-2760 is specified for Bravo I\/II\/III drives from 1988 and newer with serial number 0B664190 and up; drives outside that serial range are not confirmed fitments for this part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-2760 be used on a Blackhawk drive?\u003c\/strong\u003e Yes, the 18-2760 fits Blackhawk drives from 1994-1995 with serial number 0F18677 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2760 covered by a warranty?\u003c\/strong\u003e The Sierra 18-2760 Exhaust Tube is covered under Sierra's standard customer satisfaction warranty that applies to its parts.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988111798491,"sku":"SIE-18-2760","price":50.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2760_lg__70560.1729092953.500.750.jpg?v=1785188338","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-2760-exhaust-tube-replaces-mercruiser-78458a1-for-mercruiser-1-and-bravo-i-ii-iii-sterndrives","provider":"Good Vibes Marina","version":"1.0","type":"link"}