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Mercury/Mariner Marine Outboard Water Pump Impeller

(37 products)

Mercury/Mariner Marine Outboard Water Pump Impellers are critical to engine cooling systems, take a long a spare. Mercury outboard engines rely on the water pump for cooling. The impeller is the heart of the water pump; inspection and replacement is required on a regular basis to keep the engine running at optimum temperature.

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  • Flush-M Mercury Outboard Flushing Solution

    Flush-M

    Flush-M - Mercury Outboard Flushing Solution - Black - 75-450HP Models

    (6)
    $75.00
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  • Mercury - Outboard Water Pump Impeller - Fits 30-40-45-50-60 HP Four Stroke Bigfoot, 60 HP Bigfoot 75-125 HP - 75-90-115 Four Stroke - 150 EFI - V-200 - Mercruiser Alpha One Gen II - 47-43026T2

    Mercury

    Mercury - Outboard Water Pump Impeller - Fits 30-40-45-50-60 HP Four Stroke Bigfoot, 60 HP Bigfoot 75-125 HP - 75-90-115 Four Stroke - 150 EFI - V-200 - Mercruiser Alpha One Gen II - 47-43026T2

    $29.99 $37.08
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  • Mercury - Complete Water Pump - Fits 30-60 HP EFI & Carbureted FourStroke - 46-812966A12

    Mercury

    Mercury - Complete Water Pump - Fits 30-60 HP EFI & Carbureted FourStroke - 46-812966A12

    (2)
    $149.99 $174.83
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  • Mercury - Complete Outboard Water Pump Kit - Fits 40-125 HP - 46-8M0113799

    Mercury

    Mercury - Complete Outboard Water Pump Kit - Fits 40-125 HP - 46-8M0113799

    (2)
    $171.49 $199.92
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  • Mercury - Outboard Water Pump Impeller - Fits Various Outboards 3.9-9.8 HP - 47-89981

    Mercury

    Mercury - Outboard Water Pump Impeller - Fits Various Outboards 3.9-9.8 HP - 47-89981

    (2)
    $22.99 $26.58
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  • Mercury - Outboard Water Pump Impeller - Fits Various 30-60 HP Four Stroke - 47-19453T

    Mercury

    Mercury - Outboard Water Pump Impeller - Fits Various 30-60 HP Four Stroke - 47-19453T

    (1)
    $45.99 $53.58
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  • Mercury - Outboard Water Pump Impeller - Fits 9.9 HP Four Stroke MY 2005 - 47-803748

    Mercury

    Mercury - Outboard Water Pump Impeller - Fits 9.9 HP Four Stroke MY 2005 - 47-803748

    $27.53 $32.42
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  • Mercury - Water Pump Impeller - Fits Various 15-25 HP - 47-8508910

    Mercury

    Mercury - Water Pump Impeller - Fits Various 15-25 HP - 47-8508910

    $31.92 $37.58
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  • Mercury - Outboard Water Pump Impeller - Fits Various 25-20 HP Four Stroke and 2-Cycle Outboards - 47-161541

    Mercury

    Mercury - Outboard Water Pump Impeller - Fits Various 25-20 HP Four Stroke and 2-Cycle Outboards - 47-161541

    $27.75 $32.88
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  • Mercury Quicksilver - Outboard Water Pump Impeller - Fits 6/15 HP 2-cycle - 8/9.9 HP Four Stroke - 47-42038Q02

    Mercury

    Mercury Quicksilver - Outboard Water Pump Impeller - Fits 6/15 HP 2-cycle - 8/9.9 HP Four Stroke - 47-42038Q02

    $22.99 $26.58
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  • Mercury - Outboard Water Pump Impeller - Fits MCM & Outboard Applications - 47-89984T4

    Mercury

    Mercury - Outboard Water Pump Impeller - Fits MCM & Outboard Applications - 47-89984T4

    $40.99 $47.58
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  • Mercury - Outboard Water Pump Impeller - Fits Mercury/Mariner 8/9.9 HP Four Stroke MY 2005 - 47-8037481

    Mercury

    Mercury - Outboard Water Pump Impeller - Fits Mercury/Mariner 8/9.9 HP Four Stroke MY 2005 - 47-8037481

    $13.52 $19.10
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  • Mercury - Outboard Complete Water Pump - Fits 3.0L DFI - 817275A5

    Mercury

    Mercury - Outboard Complete Water Pump - Fits 3.0L DFI - 817275A5

    $133.49 $155.75
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  • Mercury - Outboard Water Pump Impeller - Fits Mercury/Marnier Shiftable 3.3 HP - 4/5 HP 2-cycle - 4/5/6 HP Fourstroke - 47-161543

    Mercury

    Mercury - Outboard Water Pump Impeller - Fits Mercury/Marnier Shiftable 3.3 HP - 4/5 HP 2-cycle - 4/5/6 HP Fourstroke - 47-161543

    $22.93 $27.00
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  • Mercury - Outboard Water Pump Impeller - Fits MCM & Outboard Applications - 47-89984T3

    Mercury

    Mercury - Outboard Water Pump Impeller - Fits MCM & Outboard Applications - 47-89984T3

    (1)
    $37.99 $44.17
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  • Mercury - Outboard Water Pump Impeller - Fits Various 30 - 70 HP - 47-89983T

    Mercury

    Mercury - Outboard Water Pump Impeller - Fits Various 30 - 70 HP - 47-89983T

    $22.49 $26.08
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  • Flush-M Mercury Outboard Flushing Solution

    Flush-M

    Flush-M - Mercury Outboard Flushing Solution - White - 75-450HP Models

    (6)
    $75.00
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  • Mercury Quicksilver - Water Impeller Repair Kit - Fits Mercury/Mariner 65 HP through V-6 Outboards, & Mercruiser I/R/MR/Alpha Drives - 47-89984Q5

    Mercury

    Mercury Quicksilver - Water Impeller Repair Kit - Fits Mercury/Mariner 65 HP through V-6 Outboards, & Mercruiser I/R/MR/Alpha Drives - 47-89984Q5

    $51.99 $61.80
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  • Mercury - Impeller - 47-99971M

    Mercury

    Mercury - Impeller - 47-99971M

    $67.31 $83.21
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  • Mercury - Outboard Water Pump Impeller - 47-F436065-2

    Mercury

    Mercury - Outboard Water Pump Impeller - 47-F436065-2

    $23.78 $29.29
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  • Mercury - Impeller - 47-84027T

    Mercury

    Mercury - Impeller - 47-84027T

    $26.83 $31.58
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  • Mercury - Water Pump Impeller - Fits 20 HP 1970-1985 - 47-89982

    Mercury

    Mercury - Water Pump Impeller - Fits 20 HP 1970-1985 - 47-89982

    $36.74 $43.25
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  • Mercury - Water Pump Impeller - 47-952892

    Mercury

    Mercury - Water Pump Impeller - 47-952892

    $33.83 $39.83
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  • Mercury - Outboard Water Pump Impeller - Fits Various 3.5-9.8 HP - 47-89980

    Mercury

    Mercury - Outboard Water Pump Impeller - Fits Various 3.5-9.8 HP - 47-89980

    $22.58 $26.58
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  • Mercury - Outboard Complete Water Pump - Fits 3.0L DFI - 817275A6

    Mercury

    Mercury - Outboard Complete Water Pump - Fits 3.0L DFI - 817275A6

    $164.17 $194.50
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  • Mercury - Outboard Complete Water Pump - Fits Various 35 - 40 - 50 - 65 HP - 46-77516A3

    Mercury

    Mercury - Outboard Complete Water Pump - Fits Various 35 - 40 - 50 - 65 HP - 46-77516A3

    $91.95 $108.25
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  • Mercury - Impeller - 47-11590M

    Mercury

    Mercury - Impeller - 47-11590M

    $28.24 $33.25
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  • Mercury - Impeller - 47-80395M

    Mercury

    Mercury - Impeller - 47-80395M

    $15.50 $18.25
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  • Mercury - Impeller - 47-81423M

    Mercury

    Mercury - Impeller - 47-81423M

    $31.07 $36.58
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  • Mercury - Impeller - 47-84797M

    Mercury

    Mercury - Impeller - 47-84797M

    $29.66 $34.92
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  • Mercury - Impeller - 47-95533M

    Mercury

    Mercury - Impeller - 47-95533M

    $50.75 $59.75
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  • Mercury - Impeller - 47-95611M

    Mercury

    Mercury - Impeller - 47-95611M

    $25.41 $29.92
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  • Mercury - Impeller - 47-96305M

    Mercury

    Mercury - Impeller - 47-96305M

    $18.33 $21.58
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  • Mercury - Impeller - 47-97108M

    Mercury

    Mercury - Impeller - 47-97108M

    $31.07 $36.58
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  • Mercury - Water Pump Impeller - 47-F462065

    Mercury

    Mercury - Water Pump Impeller - 47-F462065

    $52.03 $61.25
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  • Mercury - Water Pump Impeller - 47-F84065

    Mercury

    Mercury - Water Pump Impeller - 47-F84065

    $33.90 $39.92
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Impellers pump cold water into your boat's engine to cool it down while in use. If you have a bad impeller it can cause big problems. Impellers are critical to engine cooling systems, take a long a spare.

Mercury outboard engines rely on the water pump for cooling. The impeller is the heart of the water pump; inspection and replacement is required on a regular basis to keep the engine running at optimum temperature. Mercury recommends changing the impeller every 300 hours...its in the owners manual. It's an easy enough job to do yourself if you have some mechanical skills. Mercury and mariner are the same company, both owned by the bruswick corp. Mariner was originally an australian licenced company that re-badged overseas engines and sold them locally under the 'mariner' brand name, mostly US made mercurys and a few Johnsons. Signs of a bad boat impeller are either boat engine overheats when you try to accelerate, loss in impeller vanes flexibility, physical wear & tear like cracks in impeller vane roots, melted or worn of vanes. Even if you see less or no water coming out of tell-tale, it might be due to a bad impeller. Impeller pumps generally fail in one of two ways. This is usually caused by running the impeller pump dry. Remember, the fluid being pumped provides the cooling and lubrication for the pump. This is often caused by a water inlet seacock not being opened or a plastic bag covering the water inlet. Your boat's impeller is a series of rubber vanes molded around a hub. The tips of these flexible vanes can wear out for many reasons due to simple use or if the boat is in sandy water. Impellers can also wear out by becoming stiff and brittle due to the motor sitting unused for several seasons or being exposed to heat. These flexible vane tips wear out for several reasons, none of which can be prevented. Most marine engines will have a raw water pump with a flexible impeller. It is used to pump raw water from outside the boat through the engine's raw water cooling plumbing. These impellers are very reliable but some care is required. They should never be run dry.