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Yamaha Outboard Water Pump Housings

(30 products)

The Yamaha marine water pump housing is the outer shell that encases the water pump. It is typically made of cast iron or aluminum, although many modern engines use stamped-steel housings.

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  • Yamaha - Drive Shaft Collar Outboard Lower Casing - 61A-45527-00-00 - See Description for Applicable Engine Models

    Yamaha

    Yamaha - Drive Shaft Collar Outboard Lower Casing - 61A-45527-00-00 - See Description for Applicable Engine Models

    (5)
    $10.40 $11.60
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  • Yamaha - Water Pump Housing - 61A-44311-01-00 - See Description for Applicable Engine Models

    Yamaha

    Yamaha - Water Pump Housing - 61A-44311-01-00 - See Description for Applicable Engine Models

    (4)
    $27.59 $30.80
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  • Yamaha - Wave Washer - 90206-22M19-00 - See Description for Applicable Engine Models

    Yamaha

    Yamaha - Wave Washer - 90206-22M19-00 - See Description for Applicable Engine Models

    $4.98 $5.55
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  • Flush-M - Yamaha Outboard Engine Flushing Solution - Quick Connect - 8HP-450HP

    Flush-M

    Flush-M - Yamaha Outboard Engine Flushing Solution - Quick Connect - 8HP-450HP

    $35.00
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  • Yamaha - Plate Washer - 90201-22M01-00 - See Description for Applicable Engine Models

    Yamaha

    Yamaha - Plate Washer - 90201-22M01-00 - See Description for Applicable Engine Models

    $3.32 $3.75
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  • Yamaha - Water Pump Housing - 6CE-44311-01-00 - F225 F250 F300

    Yamaha

    Yamaha - Water Pump Housing - 6CE-44311-01-00 - F225 F250 F300

    (3)
    $18.78 $20.95
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  • Yamaha - Water Pump Housing - 63D-44311-00-00 - See Description for Applicable Engine Models

    Yamaha

    Yamaha - Water Pump Housing - 63D-44311-00-00 - See Description for Applicable Engine Models

    $18.85 $21.00
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  • Yamaha - Water Pump Housing - 6CJ-44311-00-00 - F70

    Yamaha

    Yamaha - Water Pump Housing - 6CJ-44311-00-00 - F70

    $15.38 $17.15
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  • Yamaha - Water Pump Housing - 67F-44311-01-00 - F75 F80 F90 F100 C85

    Yamaha

    Yamaha - Water Pump Housing - 67F-44311-01-00 - F75 F80 F90 F100 C85

    $10.26 $11.45
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  • Yamaha - Water Pump Housing - 688-44311-01-00 - See Description for Applicable Engine Models

    Yamaha

    Yamaha - Water Pump Housing - 688-44311-01-00 - See Description for Applicable Engine Models

    $27.16 $30.30
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  • Yamaha - Water Pump Housing - 66T-44311-00-00 - T25 F30 F40

    Yamaha

    Yamaha - Water Pump Housing - 66T-44311-00-00 - T25 F30 F40

    (2)
    $13.72 $15.30
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  • Yamaha - Water Pump Housing - 6H3-44311-00-00 - T50 T60 C60 P60 E60

    Yamaha

    Yamaha - Water Pump Housing - 6H3-44311-00-00 - T50 T60 C60 P60 E60

    $16.18 $18.05
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  • Yamaha - Water Pump Housing - 63V-44301-00-00 - See Description for Applicable Engine Models

    Yamaha

    Yamaha - Water Pump Housing - 63V-44301-00-00 - See Description for Applicable Engine Models

    $33.01 $36.90
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  • Yamaha - Water Pump Housing - 6L2-44311-01-00 - 20 25 Two Cycle

    Yamaha

    Yamaha - Water Pump Housing - 6L2-44311-01-00 - 20 25 Two Cycle

    $10.26 $11.45
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  • Yamaha - Water Pump Housing - 6AW-44311-01-00 - F300 F350 (V8)

    Yamaha

    Yamaha - Water Pump Housing - 6AW-44311-01-00 - F300 F350 (V8)

    $25.50 $28.50
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  • Yamaha - Water Pump Housing - 682-44300-01-00 - F9.9 T9.9 9.9/15

    Yamaha

    Yamaha - Water Pump Housing - 682-44300-01-00 - F9.9 T9.9 9.9/15

    $36.04 $40.25
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  • Yamaha - Water Pump Housing (Jet Drive) - 67F-44311-11-00 - F75 F80 F90 F100

    Yamaha

    Yamaha - Water Pump Housing (Jet Drive) - 67F-44311-11-00 - F75 F80 F90 F100

    $18.06 $20.15
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  • Yamaha - Water Pump Housing - 6J8-44311-00-00 - 25 30 40 50 P50

    Yamaha

    Yamaha - Water Pump Housing - 6J8-44311-00-00 - 25 30 40 50 P50

    $11.34 $12.60
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  • Yamaha - Water Pump Housing - 6L5-44311-00-00 - Engine Model 3

    Yamaha

    Yamaha - Water Pump Housing - 6L5-44311-00-00 - Engine Model 3

    $9.82 $11.00
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  • Yamaha - Water Pump Housing - 6GH-44311-00-00 - Engine Models 6  & 8

    Yamaha

    Yamaha - Water Pump Housing - 6GH-44311-00-00 - Engine Models 6 & 8

    $23.40 $26.10
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  • Yamaha - Water Pump Housing - 6AH-44311-00-00 - F15C F20

    Yamaha

    Yamaha - Water Pump Housing - 6AH-44311-00-00 - F15C F20

    $16.54 $18.45
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  • Yamaha - Water Pump Housing - 61N-44311-01-00 - F25 C30

    Yamaha

    Yamaha - Water Pump Housing - 61N-44311-01-00 - F25 C30

    $35.39 $39.50
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  • Yamaha - Water Pump Housing - 69M-G4311-00-00 - F2.5

    Yamaha

    Yamaha - Water Pump Housing - 69M-G4311-00-00 - F2.5

    $29.68 $33.05
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  • Yamaha - Water Pump Housing - 68D-G4311-01-00 - F4 (June 2008 & older)

    Yamaha

    Yamaha - Water Pump Housing - 68D-G4311-01-00 - F4 (June 2008 & older)

    $23.11 $25.80
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  • Yamaha - Water Pump Housing (Jet Drive) - 67C-44311-10-00 - F40

    Yamaha

    Yamaha - Water Pump Housing (Jet Drive) - 67C-44311-10-00 - F40

    $20.37 $22.70
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  • Yamaha - Water Pump Housing - 6BX-44311-00-00 - F4 (Sept 2009 & newer)

    Yamaha

    Yamaha - Water Pump Housing - 6BX-44311-00-00 - F4 (Sept 2009 & newer)

    $20.08 $22.40
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  • Yamaha - Water Pump Housing - 663-44311-02-00 - E48 C55

    Yamaha

    Yamaha - Water Pump Housing - 663-44311-02-00 - E48 C55

    $44.92 $50.10
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  • Yamaha - Water Pump Housing - 6E0-44311-00-00 - Engine Models 4 & 5

    Yamaha

    Yamaha - Water Pump Housing - 6E0-44311-00-00 - Engine Models 4 & 5

    $9.61 $10.75
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  • Yamaha - Water Pump Housing - 689-44311-03-00 - C25 C30

    Yamaha

    Yamaha - Water Pump Housing - 689-44311-03-00 - C25 C30

    $31.78 $35.45
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  • Yamaha - Housing water pump assy - 682-44300-02-00

    Yamaha

    Yamaha - Housing water pump assy - 682-44300-02-00

    $36.04 $40.25
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The Yamaha marine water pump housing has a weep hole: a small hole that allows any coolant that may be leaking from a faulty seal to escape, thereby preventing it from becoming trapped and forced into the water pump bearing assembly.

The weep hole is just a few millimeters in diameter and is located on the top, side, or bottom of the Yamaha marine water pump housing unit between the hub and water pump seal. Water is drawn into the water pump through the intake opening of the lower unit, where it passes through a cavity that ends up entering the pump itself. At that point, the impeller pressures the water into the long inlet tube leading to the bottom side of the powerhead. The water pump, also known as the coolant pump, is the heart of the engine’s cooling system. It is the water pump’s job to regulate the coolant flow rate, and to constantly circulate coolant throughout the engine and cooling system. The water pump housing impeller enables the boat to use the water where the boat is floating in. Regular replacement is necessary to avoid damaging the engine by overheating because of insufficient cooling or because of broken impeller parts being sent to the engine. When an engine overheats, you might think that the logical move is to help it to cool down by adding coolant. While this is a well-meaning move, it actually causes more harm than good. This sudden and rapid cooling cause a thermal shock and can crack the housing of the water pump.