{"product_id":"sierra-18-7070-carburetor-rebuild-kit-for-rochester-2bbl-replaces-mercruiser-1347-818619-rochester-7040080-fits-1964-1983-mcm-gm-4-6-cyl","title":"Sierra Carburetor Kit 18-7070 for Rochester 2BBL, 1964-1983 MCM GM 4 \u0026 6 Cyl Engines","description":"\u003cp\u003eThe Sierra 18-7070 Carburetor Kit is a rebuild kit for the Rochester 2BBL carburetor used on 1964-1983 MCM GM 4 \u0026amp; 6 Cylinder marine engines. It is built to restore correct fuel metering and idle performance in carburetors that have gone soft, worn, or dried out from ethanol-blended fuel and normal service life. Sierra engineers this kit to meet or exceed the specifications of the original equipment part it replaces, so the rebuilt carburetor performs to factory tolerances once assembly is complete.\u003c\/p\u003e\u003cp\u003eThis kit is intended for boat owners and marine technicians rebuilding a Rochester 2BBL carburetor rather than replacing the entire unit, which keeps rebuild cost down while restoring reliable starting, smooth idle, and consistent throttle response. Sierra supplies OEM engine manufacturers and boat builders with marine parts every day, and this carburetor kit is manufactured to the same standard used in that original equipment supply chain.\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 18-7070\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Carburetor Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Carburetor:\u003c\/strong\u003e Rochester 2BBL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines:\u003c\/strong\u003e 1964-1983 MCM GM 4 \u0026amp; 6 Cylinder Engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.28 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e 1 Carburetor Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999320964\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1964-1983 MCM GM 4 \u0026amp; 6 Cylinder marine engines with Rochester 2BBL carburetors\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1397-2072\u003c\/li\u003e\n\u003cli\u003e1397-7542\u003c\/li\u003e\n\u003cli\u003e1397-2637\u003c\/li\u003e\n\u003cli\u003e1397-7543\u003c\/li\u003e\n\u003cli\u003e1397-8872\u003c\/li\u003e\n\u003cli\u003e1397-3464\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat carburetor does the Sierra 18-7070 kit fit?\u003c\/strong\u003e The Sierra 18-7070 is a rebuild kit for the Rochester 2BBL carburetor used on 1964-1983 MCM GM 4 \u0026amp; 6 Cylinder marine engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill 18-7070 work on any GM 2-barrel carburetor?\u003c\/strong\u003e No, the 18-7070 kit is designed specifically for the Rochester 2BBL carburetor on 1964-1983 MCM GM 4 \u0026amp; 6 Cylinder engines, not for GM 2-barrel carburetors generally.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the Sierra 18-7070 replace?\u003c\/strong\u003e It replaces OEM numbers 1397-2072, 1397-7542, 1397-2637, 1397-7543, 1397-8872, and 1397-3464.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-7070 carburetor kit weigh?\u003c\/strong\u003e The Sierra 18-7070 Carburetor Kit weighs 0.28 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-7070 a full carburetor replacement or a rebuild kit?\u003c\/strong\u003e It is a rebuild kit, not a complete carburetor, intended to restore a Rochester 2BBL carburetor rather than replace the whole unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes Sierra 18-7070 meet OEM specifications?\u003c\/strong\u003e Yes, Sierra engineers the 18-7070 kit to meet or exceed the specifications of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs there a similar carburetor kit for a different Rochester application?\u003c\/strong\u003e Yes, Sierra also offers the 18-7075 kit for a different Rochester carburetor application, which uses a separate part number and replaces a different set of OEM numbers, so confirm your carburetor before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the Sierra 18-7070 kit?\u003c\/strong\u003e The kit includes one carburetor rebuild kit for the Rochester 2BBL carburetor, part number 18-7070.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate my Rochester 2BBL carburetor needs the 18-7070 kit?\u003c\/strong\u003e Rough idle, hard starting, and inconsistent throttle response on a 1964-1983 MCM GM 4 \u0026amp; 6 Cylinder engine with a Rochester 2BBL carburetor are common signs that a rebuild with the 18-7070 kit is needed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-7070 kit genuine OEM or aftermarket?\u003c\/strong\u003e The 18-7070 is a Sierra-brand aftermarket kit engineered to meet or exceed the original equipment part it replaces, identified by the OEM cross-reference numbers 1397-2072, 1397-7542, 1397-2637, 1397-7543, 1397-8872, and 1397-3464.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988361490651,"sku":"SIE-18-7070","price":26.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-7070_lg__40468.1558128959.500.750.jpg?v=1785188322","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-7070-carburetor-rebuild-kit-for-rochester-2bbl-replaces-mercruiser-1347-818619-rochester-7040080-fits-1964-1983-mcm-gm-4-6-cyl","provider":"Good Vibes Marina","version":"1.0","type":"link"}