{"product_id":"emp-thermostat-gasket-27-27611","title":"EMP Thermostat Gasket #27-27611","description":"\u003ch2\u003eEMP 27-27611 Engine Gaskets\u003c\/h2\u003e\n\u003cp\u003eMercury and Mariner 3-cylinder outboards in the 40 to 60 horsepower range are popular engines for a reason. They are reliable, manageable, and well-suited to a wide range of boats and applications. Keeping the cooling system properly sealed on these engines is one of the basics of keeping them that way, and the thermostat gasket is a small but important part of that equation. It seals the thermostat housing to the engine, preventing coolant from bypassing the thermostat or escaping the system at the housing joint. Any time the thermostat housing comes off, this gasket should be replaced. A used gasket that has been compressed and heat-cycled through multiple seasons is not going to provide the same seal as a fresh one, and at this price there is no reason to find out the hard way.\u003c\/p\u003e\n\u003cp\u003eThe EMP 27-27611 Thermostat Gasket fits Mercury and Mariner 3-cylinder outboards from 40 to 60 horsepower across two specific production windows: 1991 to 1996 and 1999 to 2006. The gap between those ranges is not a typo, so verifying your model year before ordering is worth the extra moment. It is a direct replacement for Mercury part number 8128671 and also crosses with Sierra 18-2749 and GLM 35011. If you are cross-referencing from any of those numbers, you are in the right place.\u003c\/p\u003e\n\u003cp\u003eEMP manufactures this gasket to OEM specifications for a proper, coolant-resistant seal that holds up through the heat cycles and vibration of regular outboard use. Keep one on the shelf, and it will be there when you need it.\u003c\/p\u003e\n\u003cp\u003eCompatibility and specs at a glance:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits Mercury and Mariner 3-cylinder outboards, 40 to 60 horsepower (1991 to 1996)\u003c\/li\u003e\n\u003cli\u003eFits Mercury and Mariner 3-cylinder outboards, 40 to 60 horsepower (1999 to 2006)\u003c\/li\u003e\n\u003cli\u003eVerify model year before ordering; fitment does not cover all years in this range\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury 8128671\u003c\/li\u003e\n\u003cli\u003eCrosses with Sierra 18-2749\u003c\/li\u003e\n\u003cli\u003eCrosses with GLM 35011\u003c\/li\u003e\n\u003cli\u003eBuilt to OEM specifications by EMP\u003c\/li\u003e\n\u003cli\u003eDirect replacement, no modification required for listed applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eNormalized SKU:\u003c\/b\u003e 2727611\u003cbr\u003e\u003cb\u003eUPC Code:\u003c\/b\u003e 840080405827\u003c\/p\u003e","brand":"EMP","offers":[{"title":"Default Title","offer_id":54080993460529,"sku":"EMP-27-27611","price":5.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0015\/7184\/8291\/files\/emp-thermostat-gasket-27-27611-840080405827-1237373125.jpg?v=1778357828","url":"https:\/\/www.firstchoicemarine.com\/products\/emp-thermostat-gasket-27-27611","provider":"First Choice Marine","version":"1.0","type":"link"}