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      • Sierra 18-3293 Impeller Key Replaces 28-8M0032833
        $6.49
        $5.99

        Sierra 18-3293 Impeller Key Sierra high-quality engine parts are designed to meet OEM specifications.  Use with: 47-43026 series long vane impeller Fits MCM Alpha One Gen II & various O/B applications Interchangeable...

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      • Sierra 18-8900 Water Pump Impeller Replaces 47-19453T
        $50.99
        $35.49

        Sierra 18-8900 Water Pump Impeller for Mercury, Chrysler, Force Sierra engine parts are high-quality replacement parts designed to meet OEM specifications. Interchangeable with: Chrysler/Force/US...

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      • Water Pump Repair Kit for 4 Stroke Outboards, Mercury - Mercruiser 821354A-2
        $73.19
        $60.99

        Quicksilver 821354A2 Water Pump Repair Kit for Mercury or Mariner 25-50hp 2-Stroke and 4-Stroke Outboards Complete water pump repair kit designed for Mercury and Mariner 25-50hp 2-stroke and 4-stroke outboards. This expansive kit includes the water pump...

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      • Sierra 18-3606 Mercury 130° Thermostat Kit
        $188.99
        $143.49

        Sierra 18-3606 Mercury 130° Thermostat Kit Sierra high quality replacement engine parts are designed to meet OEM specifications. Temperature Rating: 130° F Kit Includes: (2) 18-3535 Thermostat (2) 18-3675 Thermostat Cover Gasket

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      • Sierra 18-3069 Water Pump Impeller Replaces 47-81423M
        $38.49
        $26.99

        Sierra 18-3069 Water Pump Impeller for Mercury, Yamaha Outboards Sierra high-quality replacement engine parts are designed to meet OEM specifications. Interchangeable with: GLM 89910 Mallory 9-45602 9-45602-10 Mercury...

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      • Mercury - Mercruiser 47-42038Q02 Impeller
        $34.79
        $28.99

        Quicksilver 42038Q02 Impeller for Mercury And Mariner Outboards This Quicksilver Genuine OEM water pump impeller delivers essential cooling water to protect your outboard engine from overheating. Designed for long-lasting durability, it ensures...

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      • Sierra 18-3314 Water Pump Kit
        $91.49
        $63.99

        Sierra 18-3314 Mercury Water Pump Kit Sierra engine parts are designed to meet OEM specifications. For use on Mercury Marine engines. Kit Includes: (1) 18-2801 Water Pump Gasket (1) 18-2826 Water Pump Base Gasket (1) 18-2914 Water Pump Gasket (1)...

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      • Sierra 18-7997 Air Filter
        $18.99
        $14.49

        Sierra 18-7997 Air Filter for Mercury DFI Outboards Sierra high-quality air filter designed for use on Mercury Marine and Mercury Sport Jet engines. Fits: V115 DFI (2.5L) (2000) V-135 DFI (2...

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      • Quicksilver 8M0094529 Mercury Water Pump Repair Kit
        $175.79
        $146.49

        Quicksilver 8M0094529 Complete Mercury Water Pump Repair Kit This Quicksilver water pump repair kit contains all you need to maintain or repair your Mercury 75-115HP; 150HP EFI outboard engine. Water Pump Repair Kit Application Info: Fits 75‑115 EFI...

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      •  Mercury - Mercruiser 47-89981 Impeller
        $28.19
        $23.49

        QUicksilver 47-89981 Impeller Genuine Quicksilver OEM water pump impeller for Mercury and Mariner 2-stroke outboards (3.9 to 9.8 HP). Designed to deliver reliable cooling performance for small engines built between the 1960s and 1970s.Included in kit...

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      • Mercury-Mercruiser 47-89984T-3 Water Pump Impeller
        $47.39
        $39.49

        Mercury-Mercruiser 47-89984T-3 Water Pump Impeller Genuine OEM Mercury - Mercruiser part. Fiberglass Insert for improved corrosion resistance in salt water. Fits:  MCM & Outboard applications Replacement:  Sierra...

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      • Mercury - Mercruiser 32-825191A03 Rigging Hose Kit
        $71.99
        $62.49

        Mercury - Mercruiser 32-825191A03 Hose Kit-Rigging Genuine OEM Mercury-Mercruiser part. This rigging tube contains a 5' length of (2" x 2.3 threads per inch) tube that screws into the fitting coming out of the engine. Designed for use in 2005 to...

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      • Mercury - Mercruiser 47-89984T-4 Impeller
        $50.99
        $42.49

        Mercury - Mercruiser 47-89984T-4 Impeller Fits MCM & Outboard applications Uses a brass insert. An alternate glass insert impeller (47-89984T 3) is available for increased corrosion protection in salt water applications...

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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 Club Rewards Program for discounts every time you shop at Wholesale Marine.