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Parts Selection Guide

Find the parts you need

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Prop Selection Guide

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Mercury Outboard Water Pumps & Impellers

Mercury Outboard Thermostats & Gaskets

Mariner Outboard Water Pumps & Impellers

      Mercury Outboard Cooling System

      • Mercury - Mercruiser 47-8M0135803 Impeller
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        Mercury - Mercruiser 47-8M0135803 Impeller

        $27.49
        $23.99

        Mercury - Mercruiser 47-8M0135803 Impeller Genuine OEM Mercury-Mercruiser part. Application: 15HP EFI Four Stroke 0R833820 and Above 20HP EFI Four Stroke 0R833820 and Above Special Order Item

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      • Sierra 18-2559 Impeller Gasket
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        Sierra 18-2559 Impeller Gasket

        $3.99
        $2.99

        Sierra 18-2559 Impeller Gasket Sierra high-quality engine parts are designed to meet OEM specifications. For Mercury 6/8/9.9/15 Interchangeable with: Chrysler/Force/US Marine 27-19202 GLM 31230 Mercury...

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      • Sierra 18-2565 Impeller Gasket
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        Sierra 18-2565 Impeller Gasket

        $1.49
        $0.92

        Sierra 18-2565 Impeller Gasket Sierra high-quality engine parts are designed to meet OEM specifications. For use with Chrysler/Force/US Marine engines, Honda Outboards, and Mercury Marine engines. Interchangeable with: Chrysler/Force/US...

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      • EMP 46-46502 Mercury MerCruiser Water Pump Kit
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        EMP 46-46502 Mercury MerCruiser Water Pump Kit

        $120.95
        $100.79

        EMP 46-46502 Mercury MerCruiser Water Pump Kit with Housing This EMP replacement water pump kit is for use with Mercury and MerCruiser engines. This boat water pump kit comes with a rubber coated wear plate, stainless steel housing, impeller, and...

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      • EMP 75-00456 Mercury / BRP Thermostat Kit
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        EMP 75-00456 Mercury / BRP Thermostat Kit

        $23.03
        $19.19

        EMP 75-00456 Mercury / BRP Thermostat Kit This Thermostat Kit is intended for use on Mercury and BRP outboard engines and meets all OEM requirements. Thermostat Kit Application: For Mercury Mariner 1975-1979 V6 135-200 HP Outboards For...

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      • Mercury 803748 Impeller
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        Mercury - Mercruiser 47-803748 Impeller

        $38.90
        $32.42

        Mercury - Mercruiser 47-803748 Impeller Genuine OEM Mercury-Mercruiser part. Fits: 9.9HP FourStroke (BigFoot gearcase) beginning with model year 2005 NLA - Supersedes to 47-8M0214944

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      • Mercury 47-43026Q02 Water Pump Impeller
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        Quicksilver 47-43026Q02 Impeller

        $35.99
        $29.99

        Mercury - Mercruiser 47-43026Q02 Water Pump Impeller Genuine OEM Mercury-Mercruiser part. Replacement water pump impeller for Mercury Outboards.

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      • Sierra 18-0622 Lower Wear Plate Gasket
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        Sierra 18-0622 Lower Wear Plate Gasket

        $4.99
        $3.49

        Sierra 18-0622 Lower Wear Plate Gasket Sierra replacement lower wear plate gasket for Chrysler/Force/US Marine and Mercury Marine engines. Sierra engine parts are manufactured to meet or exceed OEM requirements. Interchangeable...

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      • Sierra 18-3642 Mercury Thermostat Kit
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        Sierra 18-3642 Mercury Thermostat Kit

        $69.99
        $56.99

        Sierra 18-3642 Mercury Thermostat Kit - Replaces 825212A1 Sierra replacement thermostat kit for Mercury Marine Outboards. Includes 18-0835 Thermostat Cover Gasket Interchangeable with: Mercury Marine 825212001 825212A1 855676A1

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      • EMP 47-01814 Mercury Mariner Impeller
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        EMP 47-01814 Mercury Mariner Impeller

        $22.07
        $18.39

        EMP 47-01814 Mercury Mariner Impeller This impeller is intended for use on Mercury Mariner, Honda, and Force engines and meets all OEM requirements. Specification: ID: 22.4mm OD: 89mm W: 32.5mm 6 Blades Uses Key 28-32833 Impeller...

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      • Mercury - Mercruiser 14586A-4 Thermostat Kt-120
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        Mercury - Mercruiser 14586A-4 Thermostat Kt-120

        $92.49
        $80.49

        Mercury - Mercruiser 14586A-4 Thermostat Kt-120 Includes 120 degree thermostat, gaskets, and poppet value Fits various Mercury/Mariner 50/55/60 hp. 2 cycle outboards. See application chart for specific engine models.

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      • Mercury - Mercruiser 30-72961 Water Pump Ball Bearing
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        Mercury - Mercruiser 30-72961 Water Pump Ball Bearing

        $22.99
        $19.99

        Mercury - Mercruiser 30-72961 Water Pump Ball Bearing Genuine OEM Mercury-Mercruiser part. Replacement crankcase and sea water pump ball bearing for Mercury and Mercruiser engines. Fits 3.5 - 9.8 hp Mercury outboards and Mercruiser sterndrices with...

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      • Mercury - Mercruiser 47-F521065-1 Impeller
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        Mercury - Mercruiser 47-F521065-1 Impeller

        $114.49
        $99.49

        Mercury - Mercruiser 47-F521065-1 Impeller Genuine OEM Mercury-Mercruiser part. Application: 5 H.P. (1998) - [0E288000 Through 0E344999] 5 H.P. - [225-597500 & Up] Special Order Item

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      • Mercury 47-8M0205803 Water Pump Repair Kit
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        Quicksilver 47-8M0205803 Water Pump Repair Kit

        $57.59
        $47.99

        Mercury 47-8M0205803 Water Pump Repair Kit Genuine OEM Mercury-Mercruiser part. Application: 175 - 300HP V6 3.4L & V8 4.6L Contains: Water Pump Gasket Face Plate Face Plate Gasket Key Impeller Face Seal Drain Plug Seal Water Pump...

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      • Mercury - Mercruiser 47-8M0214944 Impeller
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        Quicksilver 47-8M0214944 Impeller

        $33.59
        $27.99

        Mercury - Mercruiser 47-8M0214944 Impeller Genuine OEM Mercury-Mercruiser part. Fits: 9.9HP FourStroke (BigFoot gearcase) beginning with model year 2005 Supersedes: 47-803748

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      Mercury OEM Engine Parts Finder

      Mercury Outboard Cooling System

      Your Mercury outboard cooling system requires routine maintenance to perform optimally. Ignore this task, and you could find yourself literally stranded out at sea if your outboard overheats. Inconvenience and a possible expensive repair can be avoided by having your marine technician service your outboard on a regular schedule. It is not costly to keep your Mercury cooling system in top shape if you shop at Wholesale Marine. We carry both OEM Mercury outboard cooling system parts and quality aftermarket parts from Sierra.

      Whatever part your outboard cooling system requires, Wholesale Marine will not only have it in stock but at competitive prices. We ship daily, so your parts will be at your door before you know it. We have kits for water pump repairs, thermostats, water pumps, impellers, gaskets, hoses, seals, poppet valve kits, water pump housing, impeller keys, and more, We maintain a comprehensive array of parts in our inventory so you will not have to wait to take your boat back out on the water.

      Wholesale Marine stocks a huge selection of boat parts, including parts for your Mercury outboard cooling system that are in stock and ready to ship. No matter what you need to keep your boat up and running, we have it. Our expertise, selection, and top-tier customer service team will make you a customer for life. Have a question about which Mercury cooling system part your outboard requires? You can look it up for yourself using our convenient and easy to use Parts Finder at the top of this page. Or, if you’d prefer, you can call us Monday through Friday from 8:30 AM to 4:30 PM EST. Make sure you inquire about our Captain’s Loyalty program for discounts every time you shop at Wholesale Marine.