{"product_id":"sierra-18-6771-tilt-trim-reservoir-replaces-mercury-mercruiser-18525a1-white-universal-fit-trim-pump-fluid-tank","title":"Sierra 18-6771 Tilt\/Trim Reservoir, Replaces Mercury Marine 18525A1, 17646, White, Universal Fit","description":"\u003cp\u003eThe Sierra 18-6771 is a tilt\/trim fluid reservoir built as a direct replacement for Mercury Marine and Mercruiser tilt\/trim systems. It stores and supplies the hydraulic fluid used by the power trim pump to raise and lower the outdrive, and it is designed to meet or exceed the quality of the original equipment part it replaces. The reservoir is molded from durable plastic in white and features a tank-mount design with threaded inlet and hose\/pipe outlet connections, each sized at 0.38 inches, using NPT connectors for a secure, leak-resistant fit. This is a universal-fit reservoir, sized to fit the mounting footprint and connection style used across a range of Mercury Marine and Mercruiser trim pump assemblies. At 9.75 x 4.75 x 1 inches and 0.83 pounds, it is a straightforward, lightweight component for anyone servicing a trim system that has a cracked, leaking, or degraded original reservoir. It directly replaces Mercury Marine part numbers 18525, 18525A1, and 17646, so it drops into applications originally equipped with those reservoirs without modification. Each Sierra reservoir is manufactured to meet or exceed OEM specifications, giving boat owners and marine technicians a reliable, same-spec alternative to sourcing an increasingly hard-to-find original part.\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 18-6771\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Tilt\/Trim Reservoir\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 9.75 x 4.75 x 1 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.83 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Type:\u003c\/strong\u003e Threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Size:\u003c\/strong\u003e 0.38 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Type:\u003c\/strong\u003e Hose or Pipe Connection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Size:\u003c\/strong\u003e 0.38 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Type:\u003c\/strong\u003e NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Tank Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit Type:\u003c\/strong\u003e Universal Fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282259501\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eUniversal fit for tilt\/trim systems using the same reservoir mounting and connection style as the OEM numbers listed below.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e18525\u003c\/li\u003e\n\u003cli\u003e18525A1\u003c\/li\u003e\n\u003cli\u003e17646\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-6771 reservoir replace?\u003c\/strong\u003e The Sierra 18-6771 is a direct replacement for Mercury Marine tilt\/trim reservoir part numbers 18525, 18525A1, and 17646.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-6771 tilt\/trim reservoir?\u003c\/strong\u003e It is molded in white plastic, matching the appearance of the original Mercury Marine reservoir it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of this reservoir?\u003c\/strong\u003e The Sierra 18-6771 measures 9.75 x 4.75 x 1 inches, sized to match the mounting footprint of the OEM reservoir it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-6771 weigh?\u003c\/strong\u003e This reservoir weighs 0.83 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the reservoir made from?\u003c\/strong\u003e The 18-6771 is made from plastic, designed for durability in a marine tilt\/trim fluid environment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size are the inlet and outlet connections?\u003c\/strong\u003e Both the inlet and outlet connections on the 18-6771 are 0.38 inches, using NPT threaded fittings; the inlet is threaded and the outlet accepts a hose or pipe connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Mercury Marine part or an aftermarket replacement?\u003c\/strong\u003e The 18-6771 is a Sierra-manufactured aftermarket reservoir engineered to meet or exceed the specifications of the original Mercury Marine 18525A1, 18525, and 17646 reservoirs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-6771 fit my Mercruiser trim system?\u003c\/strong\u003e It is a universal-fit reservoir intended for tilt\/trim systems that originally used Mercury Marine reservoir numbers 18525, 18525A1, or 17646.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the 18-6771 reservoir mounted?\u003c\/strong\u003e This reservoir uses a tank-mount design consistent with the original equipment reservoir it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order part number 18-6771?\u003c\/strong\u003e The order includes one Sierra 18-6771 tilt\/trim reservoir; it does not include the pump motor or pump assembly, which are separate parts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-6771 with a different pump motor, like the Sierra 18-6772?\u003c\/strong\u003e The 18-6771 reservoir is a standalone component that supplies fluid to the trim pump motor; it is a separate part number from pump motors such as the 18-6772 and pump assemblies such as the 18-6768.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988359360731,"sku":"SIE-18-6771","price":50.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/img_468ae8a7-5185-4dfa-884b-4774372d7e1c.jpg?v=1785332816","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-6771-tilt-trim-reservoir-replaces-mercury-mercruiser-18525a1-white-universal-fit-trim-pump-fluid-tank","provider":"Good Vibes Marina","version":"1.0","type":"link"}