{"product_id":"molded-hose-for-mercruiser-7-4l-454-502-big-block-v8-replaces-mercury-32-897181-sierra-18-70934","title":"Sierra Molded Hose 18-70934, Replaces Mercury Marine 32-89718-1, Fits MCM\/MIE GM V-8 427 454 502 Engines","description":"\u003cp\u003eThe Sierra 18-70934 is a molded rubber cooling hose built for MerCruiser I\/O cooling systems. It is engineered as a direct equivalent to Mercury Marine part 32-89718-1, giving boat owners a reliable option when the factory hose on their MCM\/MIE GM V-8 (427, 454 \u0026amp; 502 cid) engine needs replacement. The hose measures 14 inches in length with a 1 3\/4 inch inside diameter and a 1.75 inch outside diameter, and is molded in white to match factory cooling system components.\u003c\/p\u003e\u003cp\u003eConstruction is polyethylene (PE), a material chosen for resistance to the heat, vibration, and constant flow conditions found in a marine cooling circuit. The molded shape is designed to route cleanly through the engine bay without kinking, maintaining consistent coolant or raw water flow to the engine. This is a universal-fit hose for the specified GM V-8 MerCruiser applications, making it a straightforward swap for a cracked, hardened, or leaking original 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 18-70934\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polyethylene (PE)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter:\u003c\/strong\u003e 1 3\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter:\u003c\/strong\u003e 1.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 14 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.35 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit Type:\u003c\/strong\u003e Universal Fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e I\/O Mercruiser Cooling System\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 32-89718-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282203344\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMCM\/MIE GM V-8 (427, 454 \u0026amp; 502 cid) engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury Marine 32-89718-1\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-70934 hose fit?\u003c\/strong\u003e The Sierra 18-70934 molded hose fits MCM\/MIE GM V-8 engines in 427, 454, and 502 cid displacements.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-70934 hose a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e It is an aftermarket Sierra part manufactured as a direct equivalent to Mercury Marine 32-89718-1, not a Mercury-branded original.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the inside diameter of this hose?\u003c\/strong\u003e The Sierra 18-70934 has a 1 3\/4 inch inside diameter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow long is the Sierra 18-70934 molded hose?\u003c\/strong\u003e This hose measures 14 inches in length.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the outside diameter of the 18-70934 hose?\u003c\/strong\u003e The outside diameter is 1.75 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-70934 cooling hose made from?\u003c\/strong\u003e It is molded from polyethylene (PE), chosen for its resistance to heat and vibration in a marine cooling system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-70934 hose?\u003c\/strong\u003e The hose is white, matching the factory-molded cooling hoses used on these MerCruiser applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes part number 32-89718-1 cross-reference to the Sierra 18-70934?\u003c\/strong\u003e Yes, Sierra 18-70934 replaces Mercury Marine part 32-89718-1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-70934 hose weigh?\u003c\/strong\u003e It weighs 1.35 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-70934 hose fit both port and starboard sides?\u003c\/strong\u003e The 18-70934 is a universal-fit hose for MCM\/MIE GM V-8 427, 454, and 502 cid engines, with no side-specific designation given.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat signs indicate the original cooling hose needs replacement with a part like the 18-70934?\u003c\/strong\u003e Cracking, hardening, or leaking at the hose connections are common reasons to replace a MerCruiser cooling hose such as the Sierra 18-70934.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988362965211,"sku":"SIE-18-70934","price":52.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-70934_lg__63563.1558130384.500.750.jpg?v=1785188778","url":"https:\/\/www.goodvibesmarina.com\/products\/molded-hose-for-mercruiser-7-4l-454-502-big-block-v8-replaces-mercury-32-897181-sierra-18-70934","provider":"Good Vibes Marina","version":"1.0","type":"link"}