{"product_id":"marine-carburetor-float-for-mercruiser-mercarb-2bbl-replaces-mercury-1397-5837-3302-9031-sierra-18-7202-brass-alcohol-resistant","title":"Sierra 18-7202 Carburetor Float, Replaces Mercury Marine 3302-9031, for MerCruiser M2\/Mercarb Carburetors","description":"\u003cp\u003eThe Sierra 18-7202 is a brass carburetor float built to restore proper fuel level control in MerCruiser M2\/Mercarb 2-barrel carburetors. The float rides inside the carburetor's fuel bowl and rises or falls with fuel level to open and close the needle valve, regulating how much fuel enters the bowl. A float that has absorbed fuel, cracked, or lost buoyancy causes flooding, hard starting, rough idle, or fuel leaking from the carburetor, and replacing it with a properly sized, alcohol-resistant unit restores accurate fuel metering.\u003c\/p\u003e\u003cp\u003eThis float is manufactured from brass and finished machined, and it is specifically formulated to resist the ethanol blends common in today's pump fuel, which is a frequent cause of premature float failure in older carburetors. It is designed for use in M2\/Mercarb carburetors installed across a range of MerCruiser Mercruiser Carb# applications, including units built within the 6229718-C856558 serial number range and units built C856559 and above, paired with carb kits 18-7097 and 18-7098-1 depending on the specific carburetor. Always match the float to your carburetor's Mercruiser Carb# and serial number range before ordering.\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 18-7202\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Carburetor Float\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Resistance:\u003c\/strong\u003e Alcohol resistant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Carburetor Type:\u003c\/strong\u003e MerCarb 2-Barrel (M2\/Mercarb)\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 030999322142\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e Mercury Marine 1397-5837, 3302-9031\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser M2\/Mercarb carburetors, Mercruiser Carb# 1389-8490A2, serial number range 6229718-C856558, used with Carb Kit 18-7097\u003c\/li\u003e\n\u003cli\u003eMerCruiser M2\/Mercarb carburetors, Mercruiser Carb# 1389-9350A2, serial number range 6229718-C856558, used with Carb Kit 18-7097\u003c\/li\u003e\n\u003cli\u003eMerCruiser M2\/Mercarb carburetors, Mercruiser Carb# 1389-9562A1, serial number range 6229718-C856558, used with Carb Kit 18-7098-1\u003c\/li\u003e\n\u003cli\u003eMerCruiser M2\/Mercarb carburetors, Mercruiser Carb# 1389-815396A2, serial number range C856559 and above, used with Carb Kit 18-7098-1\u003c\/li\u003e\n\u003cli\u003eMerCruiser M2\/Mercarb carburetors, Mercruiser Carb# 1389-815397A2, serial number range C856559 and above, used with Carb Kit 18-7098-1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury Marine 1397-5837\u003c\/li\u003e\n\u003cli\u003eMercury Marine 3302-9031\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat carburetor does the Sierra 18-7202 float fit?\u003c\/strong\u003e The Sierra 18-7202 is designed for MerCruiser M2\/Mercarb 2-barrel carburetors, specifically the applications covering Mercruiser Carb# 1389-8490A2, 1389-9350A2, 1389-9562A1, 1389-815396A2, and 1389-815397A2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-7202 float alcohol resistant?\u003c\/strong\u003e Yes, the Sierra 18-7202 carburetor float is formulated to be alcohol resistant, which helps it hold up against the ethanol content found in today's pump gasoline.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-7202 replace?\u003c\/strong\u003e The 18-7202 corresponds to Mercury Marine float part numbers 1397-5837 and 3302-9031, so either of those OEM numbers points to this same float.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the 18-7202 float made of?\u003c\/strong\u003e It is made of brass with a machined finish, which is a common construction for carburetor floats that need to resist fuel absorption and hold consistent buoyancy over time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-7202 float weigh?\u003c\/strong\u003e The Sierra 18-7202 carburetor float weighs 0.02 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my carburetor float needs replacing?\u003c\/strong\u003e Signs that a carburetor float, such as the 18-7202, needs replacement include flooding at the carburetor, fuel leaking from the bowl, hard starting, and a rough or inconsistent idle caused by improper fuel level control.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-7202 fit every MerCruiser carburetor?\u003c\/strong\u003e No, the 18-7202 is matched to specific MerCruiser M2\/Mercarb applications identified by Mercruiser Carb# and engine serial number range, so it should be matched against your carburetor's carb number before ordering rather than assumed to fit universally.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat serial number ranges does the 18-7202 cover?\u003c\/strong\u003e The Sierra 18-7202 float covers M2\/Mercarb applications built in the 6229718-C856558 serial number range as well as units built C856559 and above, depending on the specific Mercruiser Carb# involved.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat carb kits pair with the 18-7202 float?\u003c\/strong\u003e Depending on the specific M2\/Mercarb application, the 18-7202 float is used alongside carb kit 18-7097 or carb kit 18-7098-1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-7202 a genuine Mercury part or an aftermarket replacement?\u003c\/strong\u003e The 18-7202 is a Sierra-manufactured replacement float engineered to match the fit and function of Mercury Marine floats 1397-5837 and 3302-9031, rather than a part sold under the Mercury Marine brand itself.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988365226203,"sku":"SIE-18-7202","price":16.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-7202__40687.1722513665.500.750.jpg?v=1785189043","url":"https:\/\/www.goodvibesmarina.com\/products\/marine-carburetor-float-for-mercruiser-mercarb-2bbl-replaces-mercury-1397-5837-3302-9031-sierra-18-7202-brass-alcohol-resistant","provider":"Good Vibes Marina","version":"1.0","type":"link"}