{"product_id":"sierra-18-7891-oil-drain-kit-1-2-20-thread-fits-gm-chrysler-most-ford-oil-pans","title":"Sierra 18-7891 Oil Drain Kit for Mercruiser 224 CID (3.7L) Engines - 1\/4 Inch-18 NPT Brass Adapter","description":"\u003cp\u003eThe Sierra 18-7891 Oil Drain Kit is a corrosion-resistant brass drain kit built for Mercruiser 224 CID (3.7L) engines. Machined from brass, it is designed to withstand the harsh marine environment while providing a reliable point for draining engine oil during routine maintenance and oil changes. The kit uses 1\/4 inch - 18 NPT threads to mate with the engine block or oil pan drain location on applicable Mercruiser 224 CID (3.7L) powerplants.\u003c\/p\u003e\u003cp\u003eThe kit includes an oil drain hose measuring 42 inches in length with a 0.5 inch outside diameter and a nominal wall thickness of 0.035 inches, allowing oil to be routed away from the engine compartment for cleaner, easier draining. As part of installation or service, the adapter on the 18-7891 is removed and replaced per the engine's oil drain servicing procedure. Sierra manufactures this kit to meet or exceed the specifications of the original equipment part it replaces, giving boat owners a dependable option for maintaining their Mercruiser 224 CID (3.7L) engine's oil system.\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 18-7891\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e 1\/4 inch - 18 NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Mercruiser 224 CID (3.7L) Engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHose Length:\u003c\/strong\u003e 42 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter:\u003c\/strong\u003e 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Wall Thickness:\u003c\/strong\u003e 0.035 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.59 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercruiser 224 CID (3.7L) Engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines is the Sierra 18-7891 oil drain kit designed for?\u003c\/strong\u003e The Sierra 18-7891 is designed for Mercruiser 224 CID (3.7L) engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat thread size does the Sierra 18-7891 use?\u003c\/strong\u003e It uses 1\/4 inch - 18 NPT threads.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-7891 oil drain kit made from?\u003c\/strong\u003e It is machined from corrosion-resistant brass, which holds up well in a marine environment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow long is the drain hose included with the Sierra 18-7891 kit?\u003c\/strong\u003e The hose measures 42 inches in length with a 0.5 inch outside diameter and a nominal wall thickness of 0.035 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-7891 weigh?\u003c\/strong\u003e The Sierra 18-7891 oil drain kit weighs 0.59 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-7891 meet OEM specifications?\u003c\/strong\u003e Yes, the Sierra 18-7891 is engineered to meet or exceed the specifications of the original equipment part it replaces on Mercruiser 224 CID (3.7L) engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the Sierra 18-7891 installed or replaced?\u003c\/strong\u003e During service, the adapter on the 18-7891 is removed and replaced as part of the engine's oil drain procedure on Mercruiser 224 CID (3.7L) engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-7891 a genuine Sierra part?\u003c\/strong\u003e Yes, the 18-7891 is a Sierra-manufactured part engineered to meet the demands of high horsepower marine engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included with the Sierra 18-7891 kit?\u003c\/strong\u003e The kit includes a brass oil drain assembly with a 42 inch hose and adapter fitting with 1\/4 inch - 18 NPT threads.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-7891 resistant to corrosion?\u003c\/strong\u003e Yes, its brass construction is corrosion resistant, which suits it for use in the marine environment on Mercruiser 224 CID (3.7L) engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-7891 oil drain kit?\u003c\/strong\u003e The Sierra 18-7891 is finished in white.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988390359259,"sku":"SIE-18-7891","price":100.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-7891__77391.1722513049.500.750.jpg?v=1785188286","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-7891-oil-drain-kit-1-2-20-thread-fits-gm-chrysler-most-ford-oil-pans","provider":"Good Vibes Marina","version":"1.0","type":"link"}