{"product_id":"sierra-18-99528-replacement-valve-assembly-for-marine-oil-change-pumps","title":"Sierra Gearcase Filler Valve 18-99528, Replaces CDI Electronics 551-33VA \/ 551-33-1","description":"\u003cp\u003eThe Sierra 18-99528 is a replacement gearcase filler valve built for marine gear oil change and fill pump systems. It is a single-port globe valve molded in blue plastic, with a solvent-weld inlet connection and a flange outlet connection, making it a straightforward drop-in replacement where the original filler valve has worn out, cracked, or started to leak. The valve is designed for use in a marine environment, so it stands up to the moisture and exposure typical around a boat's gear oil filling system.\u003c\/p\u003e\u003cp\u003eThis part is a direct equivalent to CDI Electronics 551-33VA and is used with the 551-33-1 gearcase filler assembly, letting you replace just the valve component rather than the entire filler unit. At 0.1 pounds, it is a light, compact component intended for straightforward removal-and-replacement service rather than a full system rebuild.\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 18-99528\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 551-33va, 551-33-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Blue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e Globe Valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Type:\u003c\/strong\u003e Solvent\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Type:\u003c\/strong\u003e Flange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Ports:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282394769\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for use with the 551-33-1 gearcase filler assembly.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e551-33va\u003c\/li\u003e\n\u003cli\u003e551-33-1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-99528 used for?\u003c\/strong\u003e The Sierra 18-99528 is a gearcase filler valve used in marine gear oil change and fill pump systems, replacing the valve component when the original has failed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-99528 the same as the CDI Electronics 551-33VA?\u003c\/strong\u003e Yes, the Sierra 18-99528 is a direct equivalent to CDI Electronics 551-33VA and can be used in place of it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-99528 fit?\u003c\/strong\u003e This valve is designed for use with the 551-33-1 gearcase filler assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-99528 valve made from?\u003c\/strong\u003e It is made from plastic, molded in blue, and designed for use in a marine environment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of valve is the Sierra 18-99528?\u003c\/strong\u003e The 18-99528 is a single-port globe valve.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat connections does the Sierra 18-99528 use?\u003c\/strong\u003e It has a solvent-weld inlet connection and a flange outlet connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-99528 weigh?\u003c\/strong\u003e The 18-99528 gearcase filler valve weighs 0.1 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-99528 include any other parts?\u003c\/strong\u003e The 18-99528 is the replacement valve itself; it does not include the full 551-33-1 gearcase filler assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the Sierra 18-99528 to replace just the valve instead of the whole filler assembly?\u003c\/strong\u003e Yes, the 18-99528 is intended as a replacement valve so you can service the 551-33-1 gearcase filler without replacing the entire assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-99528 an aftermarket or genuine equivalent part?\u003c\/strong\u003e The 18-99528 is sold under the Sierra part number as a direct equivalent to the CDI Electronics 551-33VA valve.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988445737179,"sku":"SIE-18-99528","price":25.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-551-33VA_lg__90564.1748446519.500.750.jpg?v=1785188289","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-99528-replacement-valve-assembly-for-marine-oil-change-pumps","provider":"Good Vibes Marina","version":"1.0","type":"link"}