{"product_id":"sierra-18-70930-molded-cooling-hose-replaces-mercruiser-32-871171-thermostat-cover-to-starboard-manifold-fits-4-3l-5-0l-5-7l","title":"Sierra Molded Cooling System Hose 18-70930, Replaces Mercruiser 32-52481","description":"\u003cp\u003eThe Sierra 18-70930 is a molded cooling system hose engineered for fresh water or raw water cooling systems on inboard and sterndrive boat engines. Unlike straight-cut hose that must be forced into shape, this hose is molded to hold its bend from the factory, so it maintains full, unrestricted water flow through the curve while making installation straightforward. It is built to OEM specifications, meaning fit, form, and function match what the engine was designed around, so there is no guesswork when replacing a cracked, collapsed, or hardened original hose.\u003c\/p\u003e\u003cp\u003eConstruction is EPDM tubing reinforced with a synthetic knit layer, a combination chosen for marine cooling systems because it resists heat cycling, ozone, and prolonged exposure to fresh or raw water without becoming brittle or swelling. The hose is finished in white. As a direct cross-reference to Mercruiser part number 32-52481, it is intended as a like-for-like replacement in the cooling circuit rather than a universal or trim-to-fit hose.\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 18-70930\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Molded Hose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercruiser Hoses\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e EPDM tubing 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\u003eWeight:\u003c\/strong\u003e 0.2 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 14.0 H x 3.9 L x 12.2 W (centimetres)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282145972\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for fresh water or raw water engine cooling systems using this hose shape; confirm against your engine's existing hose before ordering.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercruiser 32-52481\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-70930 used for?\u003c\/strong\u003e It is a molded cooling system hose for fresh water or raw water cooling circuits on inboard and sterndrive boat engines, replacing a cracked, collapsed, or hardened original hose.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-70930 cross-reference to a Mercruiser part number?\u003c\/strong\u003e Yes, Sierra 18-70930 directly replaces Mercruiser part number 32-52481.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the hose made from?\u003c\/strong\u003e The 18-70930 is built from EPDM tubing with a synthetic knit reinforcement layer, chosen for resistance to heat, ozone, and continuous water exposure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this hose molded or a straight-cut piece I have to bend myself?\u003c\/strong\u003e The 18-70930 is molded to its bend at the factory, so it holds shape and maintains full water flow through the curve rather than kinking like a forced straight hose.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-70930 hose weigh?\u003c\/strong\u003e The Sierra 18-70930 molded hose weighs 0.2 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-70930 hose?\u003c\/strong\u003e It is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-70930 an OEM-quality part or a generic aftermarket hose?\u003c\/strong\u003e Sierra molded hoses, including the 18-70930, are designed to be OEM quality and correct in fit, form, and function for the application they cross-reference.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many hoses come in the package?\u003c\/strong\u003e The 18-70930 listing is for one molded hose (unit count of 1).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-70930?\u003c\/strong\u003e The UPC for the Sierra 18-70930 molded hose is 808282145972.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-70930 fit both fresh water and raw water cooling systems?\u003c\/strong\u003e Yes, the 18-70930 is designed for use in either fresh water or raw water engine cooling systems.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988361457883,"sku":"SIE-18-70930","price":29.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-70930_lg__80209.1558130201.500.750.jpg?v=1785187995","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-70930-molded-cooling-hose-replaces-mercruiser-32-871171-thermostat-cover-to-starboard-manifold-fits-4-3l-5-0l-5-7l","provider":"Good Vibes Marina","version":"1.0","type":"link"}