Family-Owned • 40+ Years Experience • Authorized Mercury & Mercruiser Dealer


Cooling System

Cooling System

Cooling System

Shop Mercury outboard cooling system parts including thermostats, poppet valves, cooling hoses, water jackets, and OEM replacement components designed to help maintain proper engine operating temperatures and long-term reliability. Proper cooling system maintenance is important for preventing overheating and supporting overall engine performance.

Gregor’s Marine carries genuine Mercury cooling system parts for a wide range of outboard applications.

Call our team at (727) 596-5929 for assistance confirming fitment.

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • MERCURY OEM SEAL-THERMOSTAT, 865078

    Mercury SEAL-THERMOSTAT OEM 865078

    Mercury

    MSRP: $15.09
    $12.83
    Genuine Mercury SEAL-THERMOSTAT, part number 865078. Designed for use with compatible applications.
    865078
    SKU:
    865078
    Availability:
    Usually Ships within 24hours
    Weight:
    0.16 Ounces
    MSRP: $15.09
    $12.83
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $15.09
    $12.83
    Subtotal:
  • MERCURY OEM HOSE-COOLR/RESVR, 8M0177523

    Mercury HOSE-COOLR/RESVR OEM 8M0177523

    Mercury

    MSRP: $14.69
    $12.49
    Genuine Mercury HOSE-COOLR/RESVR, part number 8M0177523. Designed for use with compatible applications.
    8M0177523
    SKU:
    8M0177523
    Availability:
    Usually Ships within 24hours
    Weight:
    2.24 Ounces
    MSRP: $14.69
    $12.49
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $14.69
    $12.49
    Subtotal:
  • MERCURY OEM HOSE-STNR TO COOL, 8M0177676

    Mercury HOSE-STNR TO COOL OEM 8M0177676

    Mercury

    MSRP: $14.69
    $12.49
    Genuine Mercury HOSE-STNR TO COOL, part number 8M0177676. Designed for use with compatible applications.
    8M0177676
    SKU:
    8M0177676
    Availability:
    Usually Ships within 24hours
    Weight:
    0.00 Ounces
    MSRP: $14.69
    $12.49
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $14.69
    $12.49
    Subtotal:
  • MERCURY OEM POPPET, 888913001

    Mercury POPPET OEM 888913001

    Mercury

    MSRP: $13.89
    $11.81
    Genuine Mercury POPPET, part number 888913001. Designed for use with compatible applications.
    888913001
    SKU:
    888913001
    Availability:
    Usually Ships within 24hours
    Weight:
    0.50 Ounces
    MSRP: $13.89
    $11.81
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $13.89
    $11.81
    Subtotal:
  • MERCURY OEM BRACKET-COOLER, 8M0161635

    Mercury BRACKET-COOLER OEM 8M0161635

    Mercury

    MSRP: $11.89
    $10.11
    Genuine Mercury BRACKET-COOLER, part number 8M0161635. Designed for use with compatible applications.
    8M0161635
    SKU:
    8M0161635
    Availability:
    Usually Ships within 24hours
    Weight:
    2.80 Ounces
    MSRP: $11.89
    $10.11
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $11.89
    $10.11
    Subtotal:
  • MERCURY OEM SPRING-THERMOSTAT, 8M0177702

    Mercury SPRING-THERMOSTAT OEM 8M0177702

    Mercury

    MSRP: $11.59
    $9.85
    Genuine Mercury SPRING-THERMOSTAT, part number 8M0177702. Designed for use with compatible applications.
    8M0177702
    SKU:
    8M0177702
    Availability:
    Usually Ships within 24hours
    Weight:
    0.64 Ounces
    MSRP: $11.59
    $9.85
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $11.59
    $9.85
    Subtotal:
  • MERCURY OEM GASKET-(PS) COOLR, 8M0177516

    Mercury GASKET-(PS) COOLR OEM 8M0177516

    Mercury

    MSRP: $11.59
    $9.85
    Genuine Mercury GASKET-(PS) COOLR, part number 8M0177516. Designed for use with compatible applications.
    8M0177516
    SKU:
    8M0177516
    Availability:
    Usually Ships within 24hours
    Weight:
    0.85 Ounces
    MSRP: $11.59
    $9.85
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $11.59
    $9.85
    Subtotal:
  • MERCURY OEM POPPET, 86596

    Mercury POPPET OEM 86596

    Mercury

    MSRP: $11.29
    $9.60
    Genuine Mercury POPPET, part number 86596. Designed for use with compatible applications.
    86596
    SKU:
    86596
    Availability:
    Usually Ships within 24hours
    Weight:
    0.32 Ounces
    MSRP: $11.29
    $9.60
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $11.29
    $9.60
    Subtotal:
  • MERCURY OEM POPPET, 8M2010905

    Mercury POPPET OEM 8M2010905

    Mercury

    MSRP: $11.09
    $9.43
    Genuine Mercury POPPET, part number 8M2010905. Designed for use with compatible applications.
    8M2010905
    SKU:
    8M2010905
    Availability:
    Usually Ships within 24hours
    Weight:
    0.50 Ounces
    MSRP: $11.09
    $9.43
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $11.09
    $9.43
    Subtotal:
  • MERCURY OEM POPPET, 814189

    Mercury POPPET OEM 814189

    Mercury

    MSRP: $10.89
    $9.26
    Genuine Mercury POPPET, part number 814189. Designed for use with compatible applications.
    814189
    SKU:
    814189
    Availability:
    Usually Ships within 24hours
    Weight:
    0.32 Ounces
    MSRP: $10.89
    $9.26
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $10.89
    $9.26
    Subtotal:
  • MERCURY OEM POPPET, 14480

    Mercury POPPET OEM 14480

    Mercury

    MSRP: $10.69
    $9.09
    Genuine Mercury POPPET, part number 14480. Designed for use with compatible applications.
    14480
    SKU:
    14480
    Availability:
    Usually Ships within 24hours
    Weight:
    0.26 Ounces
    MSRP: $10.69
    $9.09
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $10.69
    $9.09
    Subtotal:
  • MERCURY OEM GASKET-AIR COOLER, 854101

    Mercury GASKET-AIR COOLER OEM 854101

    Mercury

    MSRP: $9.99
    $8.49
    Genuine Mercury GASKET-AIR COOLER, part number 854101. Designed for use with compatible applications.
    854101
    SKU:
    854101
    Availability:
    Usually Ships within 24hours
    Weight:
    0.50 Ounces
    MSRP: $9.99
    $8.49
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $9.99
    $8.49
    Subtotal:
  • MERCURY OEM SEAL-THERMOSTAT, 8071341

    Mercury SEAL-THERMOSTAT OEM 8071341

    Mercury

    MSRP: $9.89
    $8.41
    Genuine Mercury SEAL-THERMOSTAT, part number 8071341. Designed for use with compatible applications.
    8071341
    SKU:
    8071341
    Availability:
    Usually Ships within 24hours
    Weight:
    0.26 Ounces
    MSRP: $9.89
    $8.41
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $9.89
    $8.41
    Subtotal:
  • MERCURY OEM POPPET, 884389

    Mercury POPPET OEM 884389

    Mercury

    MSRP: $9.59
    $8.15
    Genuine Mercury POPPET, part number 884389. Designed for use with compatible applications.
    884389
    SKU:
    884389
    Availability:
    Usually Ships within 24hours
    Weight:
    0.16 Ounces
    MSRP: $9.59
    $8.15
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $9.59
    $8.15
    Subtotal:
  • MERCURY OEM GASKET-THERMOSTAT, 8M0177704

    Mercury GASKET-THERMOSTAT OEM 8M0177704

    Mercury

    MSRP: $9.49
    $8.07
    Genuine Mercury GASKET-THERMOSTAT, part number 8M0177704. Designed for use with compatible applications.
    8M0177704
    SKU:
    8M0177704
    Availability:
    Usually Ships within 24hours
    Weight:
    0.32 Ounces
    MSRP: $9.49
    $8.07
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $9.49
    $8.07
    Subtotal:
  • MERCURY OEM POPPET, 8128821

    Mercury POPPET OEM 8128821

    Mercury

    MSRP: $9.29
    $7.90
    Genuine Mercury POPPET, part number 8128821. Designed for use with compatible applications.
    8128821
    SKU:
    8128821
    Availability:
    Usually Ships within 24hours
    Weight:
    0.26 Ounces
    MSRP: $9.29
    $7.90
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $9.29
    $7.90
    Subtotal:
  • MERCURY OEM HOSE COOLING, 8M0138605

    Mercury HOSE COOLING OEM 8M0138605

    Mercury

    MSRP: $8.49
    $7.22
    Genuine Mercury HOSE COOLING, part number 8M0138605. Designed for use with compatible applications.
    8M0138605
    SKU:
    8M0138605
    Availability:
    Usually Ships within 24hours
    Weight:
    0.80 Ounces
    MSRP: $8.49
    $7.22
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $8.49
    $7.22
    Subtotal:
  • MERCURY OEM GASKET-AIR COOLER, 854214

    Mercury GASKET-AIR COOLER OEM 854214

    Mercury

    MSRP: $8.29
    $7.05
    Genuine Mercury GASKET-AIR COOLER, part number 854214. Designed for use with compatible applications.
    854214
    SKU:
    854214
    Availability:
    Usually Ships within 24hours
    Weight:
    0.26 Ounces
    MSRP: $8.29
    $7.05
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $8.29
    $7.05
    Subtotal:
  • MERCURY OEM HOSE COOLING, 8M0138603

    Mercury HOSE COOLING OEM 8M0138603

    Mercury

    MSRP: $7.79
    $6.62
    Genuine Mercury HOSE COOLING, part number 8M0138603. Designed for use with compatible applications.
    8M0138603
    SKU:
    8M0138603
    Availability:
    Usually Ships within 24hours
    Weight:
    0.50 Ounces
    MSRP: $7.79
    $6.62
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $7.79
    $6.62
    Subtotal:
  • MERCURY OEM TUBE-WATER JACKET, F719943

    Mercury TUBE-WATER JACKET OEM F719943

    Mercury

    MSRP: $3.19
    $2.71
    Genuine Mercury TUBE-WATER JACKET, part number F719943. Designed for use with compatible applications.
    F719943
    SKU:
    F719943
    Availability:
    Usually Ships within 24hours
    Weight:
    1.01 Ounces
    MSRP: $3.19
    $2.71
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $3.19
    $2.71
    Subtotal:
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