Cooling System
Keep your MerCruiser engine operating at the proper temperature with genuine Mercury MerCruiser Cooling System parts. Shop water pump kits, impellers, thermostats, circulating pumps, seawater pump components, housings, gaskets, seals, and other OEM replacement parts designed for Alpha, Bravo, and inboard MerCruiser applications. Genuine MerCruiser cooling system components are engineered for reliable performance, proper engine cooling, and long service life.
Not sure which cooling system parts fit your engine? Contact our team with your engine serial number for assistance confirming compatibility.
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Mercury THERMOSTAT OEM 8M0045990
Mercury
MSRP: $39.49$33.57Genuine Mercury THERMOSTAT, part number 8M0045990. Designed for use with compatible applications.8M0045990- SKU:
- 8M0045990
- Availability:
- Usually Ships within 24hours
- Weight:
- 2.96 Ounces
MSRP: $39.49$33.57 -
Mercury Thermostat (140°F MerCruiser 120, 140 & 165 Engines) 59078
Quicksilver
MSRP: $39.49$33.57The Quicksilver Thermostat (140°F MerCruiser 120, 140 & 165 Engines) 59078 is a genuine Quicksilver OEM replacement thermostat designed to help maintain proper operating temperature for select...59078- SKU:
- 59078
- Availability:
- Usually Ships within 24hours
- Weight:
- 1.38 Ounces
MSRP: $39.49$33.57 -
Mercury Thermostat Kit, 140°F (MerCruiser 4 & 6-Cylinder) 59078Q3
Mercury
MSRP: $38.49$32.72Mercury Thermostat Kit, 140°F (MerCruiser 4 & 6-Cylinder) 59078Q3 is a genuine Mercury/Quicksilver OEM replacement kit designed for older General Motors-based MerCruiser inline 4-cylinder and...59078Q3- SKU:
- 59078Q3
- Availability:
- Usually Ships within 24hours
- Weight:
- 2.24 Ounces
MSRP: $38.49$32.72 -
Mercury THERMOSTAT KIT OEM 807252Q3
Mercury
MSRP: $36.49$31.02Genuine Mercury THERMOSTAT KIT, part number 807252Q3. Designed for use with compatible applications.807252Q3- SKU:
- 807252Q3
- Availability:
- Usually Ships within 24hours
- Weight:
- 3.50 Ounces
MSRP: $36.49$31.02 -
Mercury Thermostat, 160°F (GM MerCruiser w/ Standard Cooling) 8M0109441
Quicksilver
MSRP: $34.49$29.32Mercury Thermostat, 160°F (GM MerCruiser w/ Standard Cooling) 8M0109441 is a genuine Mercury/Quicksilver OEM replacement thermostat designed for compatible General Motors-based MerCruiser engines...8M0109441- SKU:
- 8M0109441
- Availability:
- Usually Ships within 24hours
- Weight:
- 2.00 Ounces
MSRP: $34.49$29.32 -
Mercury THERM-VOLVO/OMC OEM 8M6012543
Mercury
MSRP: $33.99$28.89Genuine Mercury THERM-VOLVO/OMC, part number 8M6012543. Designed for use with compatible applications.8M6012543- SKU:
- 8M6012543
- Availability:
- Usually Ships within 24hours
- Weight:
- 1.92 Ounces
MSRP: $33.99$28.89 -
Mercury Thermostat, 170°F (MerCruiser MPI ) 864493
Quicksilver
MSRP: $33.99$28.89The Quicksilver Thermostat (170°F MerCruiser MPI Dry Joint Cooling Systems) 864493 is a genuine Quicksilver OEM replacement thermostat designed to maintain proper operating temperature for select...864493- SKU:
- 864493
- Availability:
- Usually Ships within 24hours
- Weight:
- 3.01 Ounces
MSRP: $33.99$28.89 -
Mercury Thermostat, 140°F (Various MerCruiser Sterndrives) 8M0089715
Quicksilver
MSRP: $27.69$23.54Mercury 140°F Thermostat 8M0089715 is sold under the Quicksilver brand, Mercury Marine's line of replacement parts and accessories. This OEM replacement thermostat is designed for select MerCruiser...8M0089715- SKU:
- 8M0089715
- Availability:
- Usually Ships within 24hours
- Weight:
- 2.00 Ounces
MSRP: $27.69$23.54 -
Mercury HOSE-MOLDED OEM 99520
Mercury
MSRP: $27.39$23.28Genuine Mercury HOSE-MOLDED, part number 99520. Designed for use with compatible applications.99520- SKU:
- 99520
- Availability:
- Usually Ships within 24hours
- Weight:
- 2.88 Ounces
MSRP: $27.39$23.28 -
Mercury Water Separating Fuel Filter (Vazer & 3.0L MPI) 866594K01
Mercury
MSRP: $22.89$19.49Mercury Water Separating Fuel Filter (Vazer & 3.0L MPI) 866594K01 Genuine Mercury water separating fuel filter designed for MerCruiser 1.6L Vazer and 3.0L MPI EC sterndrive gasoline engines. Features...866594K01- SKU:
- 866594K01
- Availability:
- Usually Ships within 24hours
- Weight:
- 16.72 Ounces
MSRP: $22.89$19.49 -
Mercury Water Separating Fuel Filter (10 Micron) 866594Q01
Quicksilver
MSRP: $20.79$17.67Mercury/Quicksilver Water Separating Fuel Filter (10 Micron) 866594Q01 Genuine Quicksilver 10-micron water separating fuel filter designed for MerCruiser 1.6L Vazer and 3.0L MPI EC sterndrive...866594Q01- SKU:
- 866594Q01
- Availability:
- Usually Ships within 24hours
- Weight:
- 16.48 Ounces
MSRP: $20.79$17.67 -
Mercury Fuel & Water Separating Filter, 802893Q01
Quicksilver
MSRP: $19.79$16.82Mercury/Quicksilver Fuel & Water Separating Filter 802893Q01 Genuine Quicksilver fuel and water separating filters designed for select Mercury outboards and MerCruiser sterndrive and inboard engines...802893Q01- SKU:
- 802893Q01
- Availability:
- Usually Ships within 24hours
- Weight:
- 16.80 Ounces
MSRP: $19.79$16.82 -
Quicksilver Inlet Water Hose (MerCruiser MR, Alpha One & Alpha One Gen II Transoms) 8M0215001
Quicksilver
MSRP: $18.49$15.72Mercury/Quicksilver Inlet Water Hose (MerCruiser MR, Alpha One & Alpha One Gen II Transoms) 8M0215001 Keep your engine's cooling system operating efficiently with this genuine Quicksilver Inlet Water...8M0215001- SKU:
- 8M0215001
- Availability:
- Usually Ships within 24hours
- Weight:
- 6.32 Ounces
MSRP: $18.49$15.72 -
Mercury GASKET-THERMOSTAT OEM 8M0177704
Mercury
MSRP: $9.49$8.07Genuine 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 -
Mercury GASKET OEM 33179Q02
Mercury
MSRP: $5.09$4.33Genuine Mercury GASKET, part number 33179Q02. Designed for use with compatible applications.33179Q02- SKU:
- 33179Q02
- Availability:
- Usually Ships within 24hours
- Weight:
- 1.12 Ounces
MSRP: $5.09$4.33 -
Mercury Water Separating Fuel Filter Kit (Remote Mounting) 802893A4
Mercury
$60.99The Mercury Remote Water Separating Fuel Filter Kit 802893A4 is a genuine Mercury OEM fuel filtration system designed to help protect your engine from water and fuel contaminants. This remote-mounted...802893A4- SKU:
- 802893A4
- Availability:
- Usually Ships within 24hours
- Weight:
- 64.00 Ounces
$60.99 -
Mercury Water Separating Fuel Filter (High-Capacity) 8M0079963
Mercury
$31.49The Mercury High-Capacity Water Separating Fuel Filter 8M0079963 is a genuine Mercury OEM replacement fuel filter designed for remote-mounted fuel filter systems on select outboard, sterndrive, and...8M0079963- SKU:
- 8M0079963
- Availability:
- Usually Ships within 24hours
- Weight:
- 48.00 Ounces
$31.49
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