{"product_id":"molded-cooling-hose-18-70956-replaces-mercruiser-32-16012-fits-4-3l-4-3lx-gen-ii-oil-cooler-to-thermostat-housing","title":"Sierra Molded Hose 18-70956 - Oil Cooler to Thermostat Housing, Replaces 32-16012, Fits MerCruiser 4.3L \u0026 MC175\/205","description":"\u003cp\u003eThe Sierra 18-70956 is a molded EPDM hose built to route coolant from the oil cooler to the thermostat housing on applicable MerCruiser stern drive engines. It is engineered for thermostat housings that have all four hose connectors cast directly into the housing, with no separate \"T\" connector - two hoses run to the manifold and two hoses run to the elbow. The hose is molded rather than cut-to-fit, so it holds its shape through bends without kinking and installs in the original factory routing without modification.\u003c\/p\u003e\u003cp\u003eConstruction is EPDM tubing with a synthetic knit reinforcement layer, giving the hose resistance to heat, oil exposure, and the flexing that comes with engine vibration in a marine environment. It is finished in white and manufactured to OEM quality so fit, form, and function match the original equipment. This hose is intended for MerCruiser MC175\/205, 4.3L, 4.3L (Gen II), and 4.3LX (Gen II) applications using the four-connector thermostat housing design, and it directly replaces OEM\/Quicksilver part 32-16012.\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 18-70956\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Molded Hose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces:\u003c\/strong\u003e 32-16012\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e MC175\/205 (1987), 4.3L (1988-92), 4.3L (Gen II) (1992-95), 4.3LX (Gen II) (1992-95)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Oil cooler to thermostat housing, four hose connectors cast into the thermostat housing (no \"T\" connector), two hoses to manifold and two hoses to elbow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e EPDM with synthetic knit reinforcement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Wall Thickness:\u003c\/strong\u003e 1\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.93 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282265700\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser MC175\/205 (1987)\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4.3L (1988-92)\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4.3L (Gen II) (1992-95)\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4.3LX (Gen II) (1992-95)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e32-16012\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-70956 hose fit?\u003c\/strong\u003e The Sierra 18-70956 molded hose fits MerCruiser MC175\/205 (1987), 4.3L (1988-92), 4.3L (Gen II) (1992-95), and 4.3LX (Gen II) (1992-95) engines that use a thermostat housing with all four hose connectors cast directly into it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-70956 replace an OEM part number?\u003c\/strong\u003e Yes, it directly replaces OEM\/Quicksilver part number 32-16012.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is this hose used for?\u003c\/strong\u003e It routes coolant from the oil cooler to the thermostat housing, with two of its hose runs going to the manifold and two going to the elbow.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-70956 hose made from?\u003c\/strong\u003e It is molded from EPDM tubing with a synthetic knit reinforcement layer, chosen for heat and oil resistance in a marine cooling system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the hose?\u003c\/strong\u003e The Sierra 18-70956 molded hose is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-70956 hose weigh?\u003c\/strong\u003e It weighs 0.93 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this hose work with a thermostat housing that has a separate \"T\" connector?\u003c\/strong\u003e No. The 18-70956 is designed specifically for thermostat housings with all four hose connectors cast into the housing and no separate \"T\" connector.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many hose connections are needed to install this part?\u003c\/strong\u003e Installation uses four connections total: two hoses run to the manifold and two hoses run to the elbow.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-70956 hose genuine Sierra or a generic aftermarket part?\u003c\/strong\u003e It is a genuine Sierra part manufactured to OEM quality, so fit, form, and function match the original equipment it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the wall thickness of the 18-70956 hose?\u003c\/strong\u003e The nominal wall thickness is 1\/8 inch.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the 18-70956 and 18-70955 hoses?\u003c\/strong\u003e The 18-70956 is built for MerCruiser MC175\/205, 4.3L, and 4.3LX (Gen II) engines, while the related 18-70955 hose is designed for MC200\/230, 5.0L Alpha, MC260, 350 Mag Alpha, 5.7L Alpha \u0026amp; Bravo, 454 Mag Bravo, and 7.4L (GenV) Bravo engines. Both share the same four-connector, no-\"T\"-connector design but are not interchangeable between engine families, so it is important to order the SKU matching your engine.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988363653339,"sku":"SIE-18-70956","price":26.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-70956_lg__06109.1558131547.500.750.jpg?v=1785188354","url":"https:\/\/www.goodvibesmarina.com\/products\/molded-cooling-hose-18-70956-replaces-mercruiser-32-16012-fits-4-3l-4-3lx-gen-ii-oil-cooler-to-thermostat-housing","provider":"Good Vibes Marina","version":"1.0","type":"link"}