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Thermostats & Cooling Components - Marine Engine Parts

Premium Marine Engine Thermostats & Cooling Components

Explore our comprehensive selection of marine engine thermostats, cooling system components, and heat exchangers designed for reliable temperature regulation in harsh marine environments. Our cooling system parts ensure optimal engine performance and prevent overheating in both commercial and recreational vessels.

Product Categories

  • Thermostats: Precision temperature control devices for marine engines
  • Thermostat Housings: Durable housings and mounting components
  • Heat Exchangers: Efficient cooling system heat transfer units
  • Coolant Components: Hoses, fittings, and coolant system accessories
  • Cooling System Parts: Complete range of engine cooling components

All components are engineered to withstand saltwater corrosion, high temperatures, and the demanding conditions of marine propulsion systems. Whether you're performing routine maintenance, troubleshooting overheating issues, or upgrading your cooling system, our thermostats and cooling components deliver the reliability and performance your marine engine requires.

Essential parts for maintaining proper engine operating temperatures and preventing costly damage from overheating.

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Volvo Penta Thermostat Kit – 875580

$75.00 - $75.00
$75.00
$75.00
$75.00 - $75.00
$75.00
Only 1 left!

The Volvo Penta 875580 Thermostat Kit is a genuine OEM cooling system service kit designed to maintain proper engine operating temperature in Volvo...

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$75.00 - $75.00
$75.00
$75.00
$75.00 - $75.00
$75.00

Volvo Penta Thermostat – 8149182

$191.00 - $191.00
$191.00
$191.00
$191.00 - $191.00
$191.00
Only 2 left!

The Volvo Penta 8149182 Thermostat is a genuine OEM cooling system component designed to regulate engine temperature in Volvo Penta marine diesel e...

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$191.00 - $191.00
$191.00
$191.00
$191.00 - $191.00
$191.00

Volvo Penta Thermostat 3856961

$52.00 - $52.00
$52.00
$52.00
$52.00 - $52.00
$52.00
Only 5 left!

The Volvo Penta 3856961 Thermostat is a genuine OEM cooling system component designed to precisely regulate engine temperature in Volvo Penta marin...

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$52.00 - $52.00
$52.00
$52.00
$52.00 - $52.00
$52.00

Volvo Penta Thermostat 3842015

$160.00 - $160.00
$160.00
$160.00
$160.00 - $160.00
$160.00
Only 1 left!

Volvo Penta 3842015 is a genuine OEM engine thermostat used in Volvo Penta compact marine diesel cooling systems. Current Volvo Penta dealer refere...

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$160.00 - $160.00
$160.00
$160.00
$160.00 - $160.00
$160.00

Volvo Penta Thermostat Kit – 3831426

$81.00 - $81.00
$81.00
$81.00
$81.00 - $81.00
$81.00
Only 3 left!

The Volvo Penta 3831426 Thermostat Kit is a genuine OEM cooling system service kit designed to regulate engine temperature and maintain optimal per...

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$81.00 - $81.00
$81.00
$81.00
$81.00 - $81.00
$81.00

Volvo Penta Thermostat Kit – 3831424

$86.00 - $86.00
$86.00
$86.00
$86.00 - $86.00
$86.00
Only 2 left!

The Volvo Penta 3831424 Thermostat Kit is a genuine OEM cooling system service kit engineered to deliver precise thermal regulation and long-term r...

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$86.00 - $86.00
$86.00
$86.00
$86.00 - $86.00
$86.00

Volvo Penta Thermostat 3587597

$42.40 - $42.40
$42.40
$42.40
$42.40 - $42.40
$42.40
Only 1 left!

The Volvo Penta 3587597 Thermostat is a genuine OEM cooling system component engineered to provide precise thermal regulation in Volvo Penta gasoli...

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$42.40 - $42.40
$42.40
$42.40
$42.40 - $42.40
$42.40

Volvo Penta Thermostat – 21437904

$99.00 - $99.00
$99.00
$99.00
$99.00 - $99.00
$99.00
Only 2 left!

The Volvo Penta 21437904 Thermostat is a genuine OEM cooling system component engineered for precise temperature regulation in Volvo Penta marine e...

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$99.00 - $99.00
$99.00
$99.00
$99.00 - $99.00
$99.00

Volvo Penta Thermostat 82°C D5A D7A TAD 20450736

$150.00 - $150.00
$150.00
$150.00 - $150.00
$150.00
Only 1 left!

The Volvo Penta Thermostat 20450736 is a genuine OEM engine cooling thermostat used in compatible Volvo Penta D5/D7 and industrial engine cooling s...

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$150.00 - $150.00
$150.00
$150.00 - $150.00
$150.00

PCM Thermostat Housing Gasket RM0001

$1.78 - $1.78
$1.78
$1.78
$1.78 - $1.78
$1.78
Only 1 left!

Seal the thermostat housing and maintain proper engine cooling with the PCM Thermostat Housing Gasket RM0001. This genuine Pleasurecraft Marine (PC...

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$1.78 - $1.78
$1.78
$1.78
$1.78 - $1.78
$1.78

MerCruiser Thermostat – 991551

$62.69 - $62.69
$62.69
$62.69 - $62.69
$62.69
Only 2 left!

The Mercury MerCruiser 991551 Thermostat is a genuine OEM 160°F (71°C) thermostat designed for GM-based MerCruiser marine engines equipped with clo...

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$62.69 - $62.69
$62.69
$62.69 - $62.69
$62.69

Mercury MerCruiser Quicksilver Thermostat Assembly 8M0174561

$323.01 - $323.01
$323.01
$323.01
$323.01 - $323.01
$323.01
Only 2 left!

Mercury MerCruiser / Quicksilver Thermostat Assembly – 8M0174561 Maintain proper engine cooling and operating temperature with the genuine Mercury ...

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$323.01 - $323.01
$323.01
$323.01
$323.01 - $323.01
$323.01

Mercury Outboard Thermostat 140°F – 8M0162139

$198.83 - $198.83
$198.83
$198.83 - $198.83
$198.83
Only 3 left!

The Mercury / Quicksilver 8M0162139 Thermostat is a genuine OEM 140°F (60°C) thermostat designed for modern Mercury outboard engines. This thermost...

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$198.83 - $198.83
$198.83
$198.83 - $198.83
$198.83

Mercury Outboard Thermostat 120°F – 8M0117413

$40.95 - $40.95
$40.95
$40.95 - $40.95
$40.95
Only 1 left!

The Mercury / Quicksilver 8M0117413 Thermostat is a genuine OEM 120°F (48.8°C) thermostat used on small-to-mid horsepower Mercury 4-stroke outboard...

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$40.95 - $40.95
$40.95
$40.95 - $40.95
$40.95

Mercury Outboard Thermostat Assembly 120°F – 8M0090819

$144.55 - $144.55
$144.55
$144.55 - $144.55
$144.55
Only 1 left!

The Mercury / Quicksilver 8M0090819 Thermostat Assembly is a genuine OEM 120°F thermostat with integrated housing, designed for Mercury EFI 4-strok...

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$144.55 - $144.55
$144.55
$144.55 - $144.55
$144.55

MerCruiser Thermostat 160°F – 8M0076464 (496 MAG / 8.1L Big Block)

$61.92 - $61.92
$61.92
$61.92
$61.92 - $61.92
$61.92
Only 1 left!

The Mercury / Quicksilver 8M0076464 Thermostat is a genuine OEM 160°F (71°C) thermostat designed specifically for MerCruiser 8.1L big-block engines...

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$61.92 - $61.92
$61.92
$61.92
$61.92 - $61.92
$61.92

MerCruiser Thermostat – 882604

$159.21 - $159.21
$159.21
$159.21 - $159.21
$159.21
Only 1 left!

he Mercury MerCruiser 882604 Thermostat is a genuine OEM thermostat designed for MerCruiser CMD 1.7L diesel engines (DTI platform). This thermostat...

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$159.21 - $159.21
$159.21
$159.21 - $159.21
$159.21

Mercury MerCruiser Thermostat – 853213001

$53.15 - $53.15
$53.15
$53.15 - $53.15
$53.15
Only 1 left!

The Mercury MerCruiser Thermostat 853213001 is a genuine OEM cooling system component designed to regulate engine temperature and maintain optimal ...

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$53.15 - $53.15
$53.15
$53.15 - $53.15
$53.15

Mercury MerCruiser Thermostat Kit 807252T5

$76.48 - $76.48
$76.48
$76.48
$76.48 - $76.48
$76.48
Only 3 left!

Mercury 807252T5 is a genuine OEM 160°F thermostat kit for selected MerCruiser sterndrive and inboard engines. Mercury’s official listing ident...

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$76.48 - $76.48
$76.48
$76.48
$76.48 - $76.48
$76.48

MerCruiser Thermostat Kit – 807252T4

$99.93 - $99.93
$99.93
$99.93
$99.93 - $99.93
$99.93
in stock

The Mercury MerCruiser Thermostat Kit 807252T4 is a genuine OEM thermostat service kit designed for GM-based V6 and V8 MerCruiser engines using clo...

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$99.93 - $99.93
$99.93
$99.93
$99.93 - $99.93
$99.93

MerCruiser Thermostat Seal – 8071341

$14.84 - $14.84
$14.84
$14.84 - $14.84
$14.84
Only 2 left!

he Mercury MerCruiser Thermostat Seal 8071341 is a genuine OEM rubber sealing ring designed to properly seal the thermostat within the thermostat h...

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$14.84 - $14.84
$14.84
$14.84 - $14.84
$14.84

MerCruiser Thermostat 160°F – 76270T (3.7L 470 / 485)

$73.42 - $73.42
$73.42
$73.42 - $73.42
$73.42
Only 1 left!

The Mercury MerCruiser Thermostat 76270T is a genuine OEM 160°F thermostat designed primarily for early MerCruiser 3.7L (470/485) inline 4-cylinder...

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$73.42 - $73.42
$73.42
$73.42 - $73.42
$73.42

Mercury - Thermostat 120 - 14586

$61.90 - $61.90
$61.90
$61.90 - $61.90
$61.90

The Mercury Thermostat 14586 is a 120°F thermostat for Mercury 40 HP through 60 HP 4-stroke outboards, serial number 1C050252 and above. It helps r...

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$61.90 - $61.90
$61.90
$61.90 - $61.90
$61.90

Indmar LY6 Thermostat 160°F Drilled – 986115D

$58.22 - $58.22
$58.22
$58.22 - $58.22
$58.22
Only 1 left!

The Indmar Thermostat 986115D is a genuine OEM 160°F drilled thermostat designed for GM Gen IV LY6 and L96 marine engines equipped with closed cool...

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$58.22 - $58.22
$58.22
$58.22 - $58.22
$58.22