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 COVER-THERMOSTAT, 8503173

    Mercury COVER-THERMOSTAT OEM 8503173

    Mercury

    MSRP: $24.89
    $21.16
    Genuine Mercury COVER-THERMOSTAT, part number 8503173. Designed for use with compatible applications.
    8503173
    SKU:
    8503173
    Availability:
    Usually Ships within 24hours
    Weight:
    3.01 Ounces
    MSRP: $24.89
    $21.16
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $24.89
    $21.16
    Subtotal:
  • MERCURY OEM CAP-THERMOSTAT, 8M2003831

    Mercury CAP-THERMOSTAT OEM 8M2003831

    Mercury

    MSRP: $23.89
    $20.31
    Genuine Mercury CAP-THERMOSTAT, part number 8M2003831. Designed for use with compatible applications.
    8M2003831
    SKU:
    8M2003831
    Availability:
    Usually Ships within 24hours
    Weight:
    9.60 Ounces
    MSRP: $23.89
    $20.31
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $23.89
    $20.31
    Subtotal:
  • MERCURY OEM FITTING-OIL COOL, 888748

    Mercury FITTING-OIL COOL 888748

    Mercury

    MSRP: $23.59
    $20.05
    Genuine Mercury FITTING-OIL COOL, part number 888748. Designed for use with compatible applications.
    888748
    SKU:
    888748
    Availability:
    Usually Ships within 24hours
    Weight:
    4.00 Ounces
    MSRP: $23.59
    $20.05
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $23.59
    $20.05
    Subtotal:
  • MERCURY OEM THERMOSTAT, 8M6010302

    Mercury THERMOSTAT OEM 8M6010302

    Mercury

    MSRP: $23.49
    $19.97
    Genuine Mercury THERMOSTAT, part number 8M6010302. Designed for use with compatible applications.
    8M6010302
    SKU:
    8M6010302
    Availability:
    Usually Ships within 24hours
    Weight:
    0.99 Ounces
    MSRP: $23.49
    $19.97
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $23.49
    $19.97
    Subtotal:
  • MERCURY OEM POPPET KIT, 803060T1

    Mercury POPPET KIT OEM 803060T1

    Mercury

    MSRP: $22.49
    $19.12
    Genuine Mercury POPPET KIT, part number 803060T1. Designed for use with compatible applications.
    803060T1
    SKU:
    803060T1
    Availability:
    Usually Ships within 24hours
    Weight:
    1.74 Ounces
    MSRP: $22.49
    $19.12
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $22.49
    $19.12
    Subtotal:
  • MERCURY OEM CAP- THERMOSTAT, 8M0072278

    Mercury CAP- THERMOSTAT OEM 8M0072278

    Mercury

    MSRP: $22.49
    $19.12
    Genuine Mercury CAP- THERMOSTAT, part number 8M0072278. Designed for use with compatible applications.
    8M0072278
    SKU:
    8M0072278
    Availability:
    Usually Ships within 24hours
    Weight:
    3.25 Ounces
    MSRP: $22.49
    $19.12
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $22.49
    $19.12
    Subtotal:
  • MERCURY OEM POPPET, 884236

    Mercury POPPET OEM 884236

    Mercury

    MSRP: $20.79
    $17.67
    Genuine Mercury POPPET, part number 884236. Designed for use with compatible applications.
    884236
    SKU:
    884236
    Availability:
    Usually Ships within 24hours
    Weight:
    0.50 Ounces
    MSRP: $20.79
    $17.67
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $20.79
    $17.67
    Subtotal:
  • MERCURY OEM THERMOSTAT, 8M6013841

    Mercury THERMOSTAT OEM 8M6013841

    Mercury

    MSRP: $19.99
    $16.99
    Genuine Mercury THERMOSTAT, part number 8M6013841. Designed for use with compatible applications.
    8M6013841
    SKU:
    8M6013841
    Availability:
    Usually Ships within 24hours
    Weight:
    1.04 Ounces
    MSRP: $19.99
    $16.99
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $19.99
    $16.99
    Subtotal:
  • MERCURY OEM THERMOSTAT, 8M6013873

    Mercury THERMOSTAT OEM 8M6013873

    Mercury

    MSRP: $19.49
    $16.57
    Genuine Mercury THERMOSTAT, part number 8M6013873. Designed for use with compatible applications.
    8M6013873
    SKU:
    8M6013873
    Availability:
    Usually Ships within 24hours
    Weight:
    0.48 Ounces
    MSRP: $19.49
    $16.57
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $19.49
    $16.57
    Subtotal:
  • MERCURY OEM THERMOSTAT, 8M6010304

    Mercury THERMOSTAT OEM 8M6010304

    Mercury

    MSRP: $19.49
    $16.57
    Genuine Mercury THERMOSTAT, part number 8M6010304. Designed for use with compatible applications.
    8M6010304
    SKU:
    8M6010304
    Availability:
    Usually Ships within 24hours
    Weight:
    0.50 Ounces
    MSRP: $19.49
    $16.57
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $19.49
    $16.57
    Subtotal:
  • MERCURY OEM THERMOSTAT, 8M0223832 MERCURY OEM THERMOSTAT, 8M0223832

    Thermostat Assembly Kit for Mercury 5.7L V10 350-425hp Verado Outboards 8M0223832

    Mercury

    MSRP: $19.39
    $16.49
    Genuine Mercury THERMOSTAT, part number 8M0223832. SS# 8M0168892 Mercury Thermostat Assembly Kit 8M0217455 provides proper engine cooling temperatures, helping to assure peak performance and highest efficiency. Fits Mercury 5.7L V10 350-425hp Mercury...
    8M0223832
    SKU:
    8M0223832
    Availability:
    Usually Ships within 24hours
    Weight:
    0.80 Ounces
    MSRP: $19.39
    $16.49
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $19.39
    $16.49
    Subtotal:
  • MERCURY OEM HOSE OIL COOLER, 8M0162443

    Mercury HOSE OIL COOLER 8M0162443

    Mercury

    MSRP: $18.99
    $16.14
    Genuine Mercury HOSE OIL COOLER, part number 8M0162443. Designed for use with compatible applications.
    8M0162443
    SKU:
    8M0162443
    Availability:
    Usually Ships within 24hours
    Weight:
    1.25 Ounces
    MSRP: $18.99
    $16.14
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $18.99
    $16.14
    Subtotal:
  • MERCURY OEM HOSE-EXH TO COOLR, 8M0177664

    Mercury HOSE-EXH TO COOLR OEM 8M0177664

    Mercury

    MSRP: $18.29
    $15.55
    Genuine Mercury HOSE-EXH TO COOLR, part number 8M0177664. Designed for use with compatible applications.
    8M0177664
    SKU:
    8M0177664
    Availability:
    Usually Ships within 24hours
    Weight:
    6.50 Ounces
    MSRP: $18.29
    $15.55
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $18.29
    $15.55
    Subtotal:
  • MERCURY OEM COVER-POPPET, 893384001

    Mercury COVER-POPPET OEM 893384001

    Mercury

    MSRP: $17.89
    $15.21
    Genuine Mercury COVER-POPPET, part number 893384001. Designed for use with compatible applications.
    893384001
    SKU:
    893384001
    Availability:
    Usually Ships within 24hours
    Weight:
    1.25 Ounces
    MSRP: $17.89
    $15.21
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $17.89
    $15.21
    Subtotal:
  • MERCURY OEM SLEEVE-THERMOSTAT, 47508T

    Mercury SLEEVE-THERMOSTAT OEM 47508T

    Mercury

    MSRP: $17.49
    $14.87
    Genuine Mercury SLEEVE-THERMOSTAT, part number 47508T. Designed for use with compatible applications.
    47508T
    SKU:
    47508T
    Availability:
    Usually Ships within 24hours
    Weight:
    0.05 Ounces
    MSRP: $17.49
    $14.87
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $17.49
    $14.87
    Subtotal:
  • MERCURY OEM HOSE ASSY-POPPET, 8M0219997

    Mercury HOSE ASSY-POPPET OEM 8M0219997

    Mercury

    MSRP: $16.76
    $14.25
    Genuine Mercury HOSE ASSY-POPPET, part number 8M0219997. Designed for use with compatible applications.
    8M0219997
    SKU:
    8M0219997
    Availability:
    Usually Ships within 24hours
    Weight:
    3.07 Ounces
    MSRP: $16.76
    $14.25
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $16.76
    $14.25
    Subtotal:
  • MERCURY OEM HOSE COOLING, 8M0142503

    Mercury HOSE COOLING OEM 8M0142503

    Mercury

    MSRP: $16.49
    $14.02
    Genuine Mercury HOSE COOLING, part number 8M0142503. Designed for use with compatible applications.
    8M0142503
    SKU:
    8M0142503
    Availability:
    Usually Ships within 24hours
    Weight:
    1.28 Ounces
    MSRP: $16.49
    $14.02
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $16.49
    $14.02
    Subtotal:
  • MERCURY OEM HOSE-PS COOLER, 8M0118474

    Mercury HOSE-PS COOLER OEM 8M0118474

    Mercury

    MSRP: $15.69
    $13.34
    Genuine Mercury HOSE-PS COOLER, part number 8M0118474. Designed for use with compatible applications.
    8M0118474
    SKU:
    8M0118474
    Availability:
    Usually Ships within 24hours
    Weight:
    5.74 Ounces
    MSRP: $15.69
    $13.34
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $15.69
    $13.34
    Subtotal:
  • MERCURY OEM POPPET, 86596T

    Mercury POPPET OEM 86596T

    Mercury

    MSRP: $15.69
    $13.34
    Genuine Mercury POPPET, part number 86596T. Designed for use with compatible applications.
    86596T
    SKU:
    86596T
    Availability:
    Usually Ships within 24hours
    Weight:
    0.26 Ounces
    MSRP: $15.69
    $13.34
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $15.69
    $13.34
    Subtotal:
  • MERCURY OEM THERMOSTAT, 99155

    Mercury THERMOSTAT OEM 99155

    Mercury

    MSRP: $15.35
    $13.05
    Genuine Mercury THERMOSTAT, part number 99155. Designed for use with compatible applications.
    99155
    SKU:
    99155
    Availability:
    Usually Ships within 24hours
    Weight:
    2.88 Ounces
    MSRP: $15.35
    $13.05
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $15.35
    $13.05
    Subtotal:
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