{"product_id":"tilt-trim-motor-pump-for-mercury-mariner-35-220-hp-1985-1993-replaces-99186-3-ram-3-wire-side-fill-sierra-18-6273-1","title":"Sierra 18-6273-1 Tilt\/Trim Motor, Replaces 99186, Fits 35-220 HP Mercury\/Mariner Outboards 1985-93","description":"\u003cp\u003eThe Sierra 18-6273-1 is a high performance cartridge pump tilt\/trim motor with a replaceable motor, built to power the tilt\/trim system on 35-220 HP Mercury\/Mariner outboards (1985-93) equipped with Design I, 3 Ram, 3 Wire tilt\/trim units and a side fill reservoir as part of the Integral Trim\/Tilt System. It drives the hydraulic pump that raises and lowers the outboard, restoring tilt\/trim function when the original motor has worn out or failed. The housing uses aluminum and stainless steel construction for corrosion resistance in marine environments, and the unit is finished in white to match Mercury\/Mariner outboard hardware.\u003c\/p\u003e\u003cp\u003eThis motor operates with relay 18-5737, which is a separate component and is not included with this pump motor. As a Sierra replacement part, it is built to meet or exceed the performance of the original equipment motor it replaces, giving boat owners a reliable way to restore tilt\/trim operation without sourcing a full OEM assembly. Confirm your outboard's HP rating and tilt\/trim system type (Design I, 3 Ram, 3 Wire, side fill reservoir) before ordering to ensure correct fitment.\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 18-6273-1\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 Aluminum, Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 6.54 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorsepower Range:\u003c\/strong\u003e 35-220 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTilt\/Trim System Type:\u003c\/strong\u003e Design I, 3 Ram, 3 Wire, Side Fill Reservoir, Integral Trim\/Tilt System\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay Required:\u003c\/strong\u003e 18-5737 (sold separately)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 99186, 99186-1, 99186-T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Use:\u003c\/strong\u003e Salt Water\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282186883\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e35-220 HP Mercury\/Mariner Outboards (1985-93)\u003c\/li\u003e\n\u003cli\u003eDesign I, 3 Ram, 3 Wire Tilt\/Trim Units with Side Fill Reservoir, Integral Trim\/Tilt System\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e99186\u003c\/li\u003e\n\u003cli\u003e99186-1\u003c\/li\u003e\n\u003cli\u003e99186-T\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-6273-1 tilt\/trim motor replace?\u003c\/strong\u003e The Sierra 18-6273-1 replaces Mercury 99186, 99186-1, and 99186-T tilt\/trim motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat outboards does the 18-6273-1 fit?\u003c\/strong\u003e It fits 35-220 HP Mercury\/Mariner outboards (1985-93) equipped with Design I, 3 Ram, 3 Wire tilt\/trim units and a side fill reservoir as part of the Integral Trim\/Tilt System.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs a relay included with this tilt\/trim motor?\u003c\/strong\u003e No, the Sierra 18-6273-1 uses relay 18-5737, which is a separate part and is not included with the motor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the 18-6273-1 tilt\/trim motor made of?\u003c\/strong\u003e Sierra builds the 18-6273-1 from aluminum and stainless steel for corrosion resistance in marine use, including salt water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-6273-1 weigh?\u003c\/strong\u003e The Sierra 18-6273-1 tilt\/trim motor weighs 6.54 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-6273-1 motor?\u003c\/strong\u003e It is finished in white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-6273-1 a genuine OEM part or aftermarket?\u003c\/strong\u003e The 18-6273-1 is a Sierra aftermarket replacement built to meet or exceed the performance of the original Mercury 99186 series motor it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-6273-1 come with a cartridge pump?\u003c\/strong\u003e Yes, the 18-6273-1 is a high performance cartridge pump tilt\/trim motor with a replaceable motor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-6273-1 fit any Mercury tilt\/trim system?\u003c\/strong\u003e No, it is designed specifically for Design I, 3 Ram, 3 Wire tilt\/trim units with a side fill reservoir on 35-220 HP Mercury\/Mariner outboards (1985-93); other tilt\/trim configurations require a different motor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the horsepower range for the 18-6273-1?\u003c\/strong\u003e The Sierra 18-6273-1 covers 35-220 HP Mercury\/Mariner outboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-6273-1 work on Mariner outboards as well as Mercury?\u003c\/strong\u003e Yes, the 18-6273-1 fits both Mercury and Mariner outboards within the 35-220 HP range (1985-93) that use the Design I, 3 Ram, 3 Wire side fill system.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988356116699,"sku":"SIE-18-6273-1","price":629.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-6273-1__97337.1722482500.500.750.jpg?v=1785188804","url":"https:\/\/www.goodvibesmarina.com\/products\/tilt-trim-motor-pump-for-mercury-mariner-35-220-hp-1985-1993-replaces-99186-3-ram-3-wire-side-fill-sierra-18-6273-1","provider":"Good Vibes Marina","version":"1.0","type":"link"}