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Mercury Mercruiser Thermostats

As the leading aftermarket parts supplier, Marine Parts China provides a comprehensive range of inboard/outboard thermostats compatible with major marine engine brands including Yamaha, Honda, Suzuki, Mercury Mercruiser, OMC, Volvo Penta and Yanmar. Our goal is to deliver exceptional quality products and attentive service to both our distributors and their valued customers.

Quality Assurance

  • Extensively tested for durability and reliability, meeting strict OEM specifications for a precise fit and OE-quality function
  • Withstands 500 hours of salt spray testing and over 20,000 cycles of opening and closing.
  • 1 Year Limited Warranty on Manufacturer’s Defect in Material or Workmanship

Contact us now, to experience boat parts procurement services directly from the factory.

Thermostats for Mercury Mercruiser Inboard motor

18-43175 855676002 9-4317 Thermostat for Mercury Mercruiser

18-43175 855676002 9-4317 Thermostat for Mercury Mercruiser

60 ºC Thermostat 60 Degrees

Replace:

855676002
8M0119207

 

60 ºC Thermostat 60 Degrees
Where Used Temperature Rating: 130°F
8/9.9 (209CC) 4-STROKE – 8 (4-STROKE)(209cc) 15/20 Carburetor/2 CYLINDER/4-STROKE – 20 Carb(2CYL)(4-STROKE)
25/30/JET 25 EFI/3 CYLINDER 4-STROKE – 30 EFI (3 CYL.)(4-STROKE) 25HP SEAPRO 4-STROKE INTERNATIONAL – 25 SEAPRO (4-STROKE)
15/20 Carburetor/2 CYLINDER/4-STROKE – 15 Carb(2CYL)(4-STROKE) 15HP SEAPRO 4-STROKE INTERNATIONAL – 15 SEAPRO (4-STROKE)
8/9.9 (209CC) 4-STROKE – 9.9 (4-STROKE)(209cc) 15/20 Carburetor/2 CYLINDER/4-STROKE – 15 Carb(2CYL)(4-STROKE) JCI
15/20 Carburetor/2 CYLINDER/4-STROKE – 10 Carb(2CYL)(4-STROKE) 25/30/JET 25 EFI/3 CYLINDER 4-STROKE – 25 Jet EFI (3 CYL.)(4-STROKE)
15 HP SEAPRO 4-STROKE – 15 SEAPRO (4-STROKE) 25/30/JET 25 EFI/3 CYLINDER 4-STROKE – 25 EFI (3 CYL.)(4-STROKE)

Mallory
9-4317

Mercury Marine
855676002
8M0119207

Nissan/Tohatsu Outboard
3NV010300M
3R3-01030-0
3R3010300M

Mallory

9-43175

Mercury Marine

855676002
8M0119207

Nissan/Tohatsu Outboard

3NV010300M
3R3-01030-0
3R3010300M
Specification Collapse
855676005 8M4500081 Thermostat for Mercury Mercruiser

855676005 8M4500081 Thermostat for Mercury Mercruiser

71℃ Fits on the following engines:
8 9.9HP 4 stroke engines
71 ºC 160 ºF
replaces 855676005

Replace:

855676005
8M4500081

 

Mercury
855676005

Thermostat 71 Degrees

Specification Collapse
18-3549 14586 9-43014 Thermostat for Mercury Mercruiser

18-3549 14586 9-43014 Thermostat for Mercury Mercruiser

48.8℃ Fit:Mercury/Mariner A197112 & Later 6 7 8 9.9 & 15 HP
120°F

Replace:

14586

Sierra
18-3549

GLM
13120

Mallory
9-43014

Mercury Marine
14586


Sears
14586

Specification Collapse
18-3569 803061T1 GLM13124 Thermostat for Mercury Mercruiser

18-3569 803061T1 GLM13124 Thermostat for Mercury Mercruiser

Thermostat 48.8℃

Replace:

803061T1

Temperature Rating: 120°F

Fits: Various Mercury/Mariner 70-125 hp 2 cycle outboards (1987 and newer)

GLM

13124

Mallory

9-43155

Mercury Marine

803061T1



Specification Collapse
F664068 Thermostat for Mercury Mercruiser

F664068 Thermostat for Mercury Mercruiser

Thermostat (130 Degrees)

Replace:

F664068

 
18-3649 807252T2 13100 9-43002 Thermostat for Mercury Mercruiser

18-3649 807252T2 13100 9-43002 Thermostat for Mercury Mercruiser

Thermostat 71 ºC
Temperature Rating: 160°F
Fits: 1987 & newer GM engines with standard cooling requiring a 160° thermostat
Thermostat for 4.3L 5.0L 5.7L

Replace:

807252T2 8M0091470 8M0109441
8052732
8072522 807252-2

Sierra: 18-3649

Crusader
97895
GLM
13100

Mallory
9-43002

Mercruiser Stern Drive
8052732
8072522
807252T2
8M0091470
8M0109441

Temperature Rating: 160°F

Fits: 1987 & newer GM engines with standard cooling requiring a 160° thermostat

Crusader

97895

GLM

13100

Mallory

9-43002

Mercruiser Stern Drive

8052732
8072522
807252T2
8M0091470
8M0109441
Specification Collapse
18-3551 8M0089715 4142885 Thermostat for Mercury Mercruiser

18-3551 8M0089715 4142885 Thermostat for Mercury Mercruiser

82℃/140ºF For Various MerCruiser Stern Drives 140 degrees
Used on all V-8 Chrysler engines w/Rochester carburetors 1986 – present
For: Raw water-cooled engines
For Ford 302 / 351 CID Engines
O.D.: 2.125
Height: 1.50

Replace:

8M0089715
807252T1

82℃/140ºF For Various MerCruiser Stern Drives 140 degrees
Used on all V-8 Chrysler engines w/Rochester carburetors 1986 – present
For: Raw water-cooled engines
For Ford 302 / 351 CID Engines

Chrysler Inboard

4142885

Crusader

96319

GLM

13030

Mallory

9-43013

Mercruiser Stern Drive

32728
35884
59137
59137A1
67464
8052731
8072521
807252T1
8M0089715

Osco

143-DEG

Pleasurecraft

RO26002E


O.D.: 2.125
Height: 1.50

Specification Collapse
18-3640 8M0117413 Thermostat for Mercury Mercruiser

18-3640 8M0117413 Thermostat for Mercury Mercruiser

48.8℃ Fits 40-60HP (1C050252 & Up)

Replace:

8M0117413

 

Sierra: 18-3640

Mercury Marine
8M0117413

Fits: Mercury 40-60HP (1C050252 & Up)

Mercury Marine

8M0117413
8M0168892

 

Specification Collapse
18-43015 864493 85860 Thermostat for Mercury Mercruiser

18-43015 864493 85860 Thermostat for Mercury Mercruiser

Fits: MCM 4.3L, 5.0L, 5.7L & 6.2L MPI engines w/dry joint exhaust & closed cooling
Temperature Rating: 170°F (77°C)
with Seal 25-8071341

Replace:

864493

Sierra
18-43015
GLM
85860
MALLORY
9-43015
MERCURY
25-807134
Mercruiser Stern Drive
864493

 

Specification Collapse
8M0139434 Thermostat with gasket for Mercury Mercruiser

8M0139434 Thermostat with gasket for Mercury Mercruiser

52℃ Fits 9.9 EFI (1R008146+)
10 15 20 EFI
(0R833820+)
2 cyl

Replace:

8M0139434

82℃/140ºF For Various MerCruiser Stern Drives 140 degrees
Used on all V-8 Chrysler engines w/Rochester carburetors 1986 – present
For: Raw water-cooled engines
For Ford 302 / 351 CID Engines

Chrysler Inboard

4142885

Crusader

96319

GLM

13030

Mallory

9-43013

Mercruiser Stern Drive

32728
35884
59137
59137A1
67464
8052731
8072521
807252T1
8M0089715

Osco

143-DEG

Pleasurecraft

RO26002E


O.D.: 2.125
Height: 1.50

Specification Collapse
18-3647 807252Q5 13101 9-43157 Thermostat Kit for Mercury Mercruiser

18-3647 807252Q5 13101 9-43157 Thermostat Kit for Mercury Mercruiser

71°C Thermostat Kit 160°for Mercruiser 1987 & UP 4.3L V6 5.0L 5.7L 7.4L 8.2L V8
Kit Contains:
1x 160 Degree Thermostat (Replaces 808252 8M0109441)
1x Cover Gasket (Replaces 27-48818-1)
1x Cover Gasket (Replaces 27-33179-2)
1x Cover Gasket (Replaces 27-47510)
1x Housing Gasket (Replaces 27-53045-1)

Replace:

807252Q5
807252T8

 

Sierra
18-3647

GLM
13101

Mallory
9-43157

Mercruiser Stern Drive
807252Q5
807252T8

Fits: 1987 & newer GM engines with standard cooling requiring a 160° thermostat

Temperature rating: 160°F

GLM

13101

Mallory

9-43157

Mercruiser Stern Drive

807252Q5
807252T5
807252T8
Specification Collapse

807252Q5-only Kits for Mercury Mercruiser

Thermostat Kit 160°for Mercruiser 1987 & UP 4.3L V6 5.0L 5.7L 7.4L 8.2L V8
Kit Contains:
1x Cover Gasket (Replaces 27-48818-1)
1x Cover Gasket (Replaces 27-33179-2)
1x Cover Gasket (Replaces 27-47510)
1x Housing Gasket (Replaces 27-53045-1)

Replace:

807252Q5-only Kits

GLM 13101
Sierra: 18-3647
only Kits

Fits: 1987 & newer GM engines with standard cooling requiring a 160° thermostat

Temperature rating: 160°F

GLM

13101

Mallory

9-43157

Mercruiser Stern Drive

807252Q5
807252T5
807252T8
Specification Collapse
18-3549 14586 9-43014 Thermostat for Mercury Mercruiser

18-43052 14586A3 75692A10 13121 Thermostat Kit for Mercury Mercruiser

Fit: various Mercury/Mariner 6-25 HP 2-Stroke 2 cycle outboards

Replace:

14586A3

Mercruiser 14586A3 75692A10 75692A11 75692A9
Sierra: 18-43052
GLM 13121

Temperature Rating: 120°F

Fits: Various Mercury/Mariner 6-25 hp 2 cycle outboards

Mallory

9-43052

Mercury Marine

14586A3
75692A10
75692A11
75692A9

 

Specification Collapse
18-3550 59078 13020 29-59078 Thermostat for Mercury Mercruiser

18-3550 59078 13020 29-59078 Thermostat for Mercury Mercruiser

Temperature Rating: 140°F
Fits: MerCruiser 120/2.5L (s/n 2324347 & Up) w/cast iron exhaust manifolds
Fits: Mercruiser 140-3.0L (s/n 0L340999 & below) and 165

Replace:

59078

 

GLM
13020

Sierra
18-3550

Barr MC
29-59078
Mallory
9-43153
9-43020
Chrysler/Force/US Marine
F84068
F84068-1
F84068-2
F85068-2
Mercruiser Stern Drive
59078
59078A1
59078B

Temperature Rating: 140°F

Fits: MerCruiser 120/2.5L (s/n 2324347 & Up) w/cast iron exhaust manifolds

Fits: Mercruiser 140-3.0L (s/n 0L340999 & below) and 165

Chrysler/Force/US Marine

F84068
F84068-1
F84068-2
F85068-2

GLM

13020

Mallory

9-43020

Mercruiser Stern Drive

59078
59078A1
59078B
Specification Collapse
18-2831 59078 27-475901 Thermostat for Mercury Mercruiser

18-2831 59078 27-475901 Thermostat for Mercury Mercruiser

60℃ Temperature 140°F
Fit:MerCruiser 3.0L & 4.3L engines requiring a 140° Thermostat; Mercruiser inline GM 4 cylinder and 6 cylinder 153 120 2.5 140 181 3.0 250 4.1 165

Replace:

59078 with Gasket
59078Q3

Mercruiser 27-475901 27-47590Q01 47590 47590B1 59078 59078A1 59078B 59078Q3 59078T3 59078T4 F84068 F84068-1 F84068-2 F85068-2
OMC Johnson Evinrude 0508543 0508617
GLM:13370
Sierra: 18-2831 18-3550 18-3650

Fits: Renault 90 & GM in-line 4 & 6 cyl. engines

Barr

MC472747590

GLM

31430

Mallory

9-60012

Mercruiser Stern Drive

27-47590
27-475901
27-47590B1

 

Specification Collapse
18-3638 804540 5040958 3H601030 Thermostat for Mercury Mercruiser

18-3638 804540 5040958 3H601030 Thermostat for Mercury Mercruiser

Temperature 52°C (126F)
Thermostat Fits 2.5/4/5/6HP 4-stroke

Replace:

804540

OMC Johnson Evinrude 5040958;

Tohatsu 3H601030

Sierra 18-3638

Fits: Mercury 2.5-3.5HP (0R131842 & Up), 4-6HP (0R411838 & Up)

Mercury Marine

804540
Specification Collapse
YS807252Q4with Gaskets

18-3668 807252Q4 13390 Thermostat with Gaskets for Mercury Mercruiser

Crusader Thermostat 140º
For Ford 302 / 351 CID Engines
Used on all V-8 Chrysler engines w/Rochester Carburetors 1986 – present

Replace:

807252Q4 with Gaskets

 

GLM

13390
Mallory

9-43150
Mercruiser Stern Drive

807252Q4
807252T4
807252T7

Temperature Rating: 142°F

Fits: 1983 & newer GM V-6 & V-8 engines with standard cooling

GLM

13390

Mallory

9-43150

Mercruiser Stern Drive

807252Q4
807252T4
807252T7



Specification Collapse
18-3541 9-43037 825212T02 66M-12411-00-00 Thermostat with Gaskets for Mercury Mercruiser

18-3541 9-43037 825212T02 66M-12411-00-00 Thermostat with Gaskets for Mercury Mercruiser

Temperature Rating: 140°F / 60°C60℃ 140°F
Fits F6(2001-05) F8(2001-05) T8(2001-05) F9.9(1985-05) T9.9(1985-05) T9.9(1991-05) F15(1998-05) F25(1998-05) T25(2001-05) F30(2001-05) F40 4cyl (1999) F40 3cyl (2000-05) F50 (1995-05) T50 (1996-05) F60 (2002-05) T60 (2003-05) F80 (1999-00) F100 (1999-00)

Replace:

825212T02 with Gasket

Sierra
18-3541
Mallory
9-43037
Yamaha Outboard
66M-12411-00-00
66M-12411-01-00
6G8-12411-00-00
6G8-12411-01-00
6G8-12411-02-00
6G8-12411-03-00
Mercruiser
825212
825212A1
825212001
825212T02
855676
855676A1
855676003
Honda
19300-ZW9-003
19300-881-741
19300-921-003
19300-ZY3-023
Parsun
F15-07000031
HZW9-19300-003
WSM
775-205

Mallory

9-43037

Yamaha Outboard

66M-12411-00-00
66M-12411-01-00
6G8-12411-00-00
6G8-12411-01-00
6G8-12411-02-00
6G8-12411-03-00
Specification Collapse
18-3555 27-74830 0508570 Thermostat Kits for Mercury Mercruiser

18-3555 27-74830 0508570 Thermostat Kits for Mercury Mercruiser

Temperature Rating: 160°F
Fits: 1998 & newer GM V-6 & V-8 engines with closed cooling”
Thermostat Kit for MerCruiser 3.7 liter engines.

Replace:

27-74830
27-896561
76270T 991551
99155A1 99155T1
99155T2

Sierra
18-3555
18-3568
OMC Johnson Evinrude
0508570
0508576
0508621
0508623
Crusader
96358
GLM
13040
Mallory
9-43001
9-43016
Mercruiser Stern Drive
991551
99155A1
99155T2

Temperature Rating: 160°F

Fits: 1998 & newer GM V-6 & V-8 engines with closed cooling

GLM

13040

Mallory

9-43001
9-43016

Mercruiser Stern Drive

991551
99155A1

 

Specification Collapse
22-806608A02 863444T1 Thermostat Housing for Mercury Mercruiser

22-806608A02 863444T1 Thermostat Housing for Mercury Mercruiser

Water Distribution Housing

Replace:

22-806608A02
863444T1

 
863631T1 Thermostat Housing for Mercury Mercruiser

863631T1 Thermostat Housing for Mercury Mercruiser

Water Distribution Housing for Mercruiser 4.3 5.0 5.7 6.2 MPI

Replace:

863631T1

863802T2 Thermostat Housing for Mercury Mercruiser

863802T2 Thermostat Housing for Mercury Mercruiser

Air Actuated (Closed Cool) Water distribution housing fits Mercury Marine 350 MAG MPI Alpha/Bravo?Horizion, 357 MAG MPI Bravo, 383 MAG Stroker, 4.3, 5.0, 5.7, 6.0 MPI MEI & Horizon engines.

Replace:

863802T2

18-3631 892864T04 Thermostat Housing for Mercury Mercruiser

18-3631 892864T04 Thermostat Housing for Mercury Mercruiser

Fits: 135-300 Verado

Includes thermostat and housing

Temperature Rating: 144°F

Replace:

Mercury Marine

892864T04
8M0174561

 

Sierra: 18-3631

Fits: 135-300 Verado

Includes thermostat and housing

Temperature Rating: 144°F

Mercury Marine

892864T04
8M0174561
Specification Collapse
18-3635 892864T06 Thermostat Housing with Clamp and O RING for Mercury Mercruiser

18-3635 892864T06 Thermostat Housing with Clamp and O RING for Mercury Mercruiser

Fits 75-115HP (1B366823-2B094995) 150 EFI (1B905505 & Up)

Replace:

892864T06 with Clamp and O RING

Sierra: 18-3635
Mercury Marine
892864T06
Housing-Thermostat Inlcude one Clamp 2 O Ring (A06 120)

Fits: Mercury 75-115HP (1B366823-2B094995), 150 EFI (1B905505 & Up)

Mercury Marine

892864T06
Specification Collapse
8M0162139 8M0137816 Thermostat Housing for Mercury Mercruiser

8M0162139 8M0137816 Thermostat Housing for Mercury Mercruiser

Thermostat Housing Assembly 60°C / 175° fits most Mercury Outboards

Replace:

8M0162139 with clamp and Seal

8M0137816, 8M0162139

 

Specification Collapse
8M0095953 FITTING ASSEMBLY for Mercury Mercruiser

8M0095953 FITTING ASSEMBLY for Mercury Mercruiser

Mercruiser Fitting Assembly 4.5L MPI 250 Alpha Bravo Engine Motor Fitting Assembly NEW

Replace:8M0095953

22-863786A1 GLM13995 Exhaust Drain Valve for Mercury Mercruiser

22-863786A1 GLM13995 Exhaust Drain Valve for Mercury Mercruiser

Fit on: Mercruiser V6 & V8 Engines With Standard Cooling And With Dry Joint Exhaust Systems

Replace:

863786A1

22-863786A1 22-863786A 1 GLM13995

Specification Collapse
18920A1 Valve Assembly for Mercury Mercruiser

18920A1 Valve Assembly for Mercury Mercruiser

gear lube Reservoir Dribble Valve

Replace:

18920A1

18920A1 18920A 1

Specification Collapse
879150054 888624 THERMOSTAT ASSEMBLY for Mercury Mercruiser

879150054 888624 THERMOSTAT ASSEMBLY for Mercury Mercruiser

2.0L I4 115-130HP DIESEL – 2.0L EI 115 2.0L I4 150-170HP DIESEL – 2.0L ES 150
2.0L I4 115-130HP DIESEL – 2.0L ES 130 2.0L I4 150-170HP DIESEL – 2.0L EI 150
CUMMINS/MERCRUISER DIESEL (QSD-2.0L) – CMD QSD 2.0 EI 130 2.0L I4 150-170HP DIESEL – 2.0L ES 170
2.0L I4 150-170HP DIESEL – 2.0L EI 170 2.0L I4 115-130HP DIESEL – 2.0L EI 130
CUMMINS/MERCRUISER DIESEL (QSD-2.0L) – CMD QSD 2.0 ES 170 CUMMINS/MERCRUISER DIESEL (QSD-2.0L) – CMD QSD 2.0 ES 130
CUMMINS/MERCRUISER DIESEL (QSD-2.0L) – CMD QSD 2.0 EI 150 CUMMINS/MERCRUISER DIESEL (QSD-2.0L) – CMD QSD 2.0 ES 150

Replace:

879150054
888624

8M0093561 879194215 39012036F THERMOSTAT ASSEMBLY for Mercury Mercruiser

8M0093561 879194215 39012036F THERMOSTAT ASSEMBLY for Mercury Mercruiser

Fits MerCruiser CMD QSD 2.8 EI/ES 170, 210, 220 & 230

Replace:

8M0093561

8M0093561
879194215
39012036F

Specification Collapse
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Marine thermostat Factory

Welcome to our world-class marine thermostat manufacturing facility. We specialize in the design and production of high-quality thermostats for both Japanese and American outboard engines, as well as inboard engines. Our comprehensive product range includes thermostats for YAMAHA, Suzuki, Honda, and TOHATSU engines from Japan, as well as Mercury and OMC/Johnson/Evinrude OMC engines from the United States. Additionally, our inboard engine thermostats cater to Yanmar and Volvo engines, further demonstrating our diverse capabilities.

Manufacturing Process

MPC’s manufacturing process is enhanced by an advanced mold development capacity. Utilizing the latest technology and techniques, our expert team is capable of designing and creating molds with unparalleled precision. This advanced capability allows us to meet a wide range of specific manufacturing demands, ensuring each product we produce meets the highest standards of quality and design

Inside Our Thermostat Manufacturing Facility

We invite you to experience the difference our devotion to excellence makes, and discover why MPC is the proven choice for yourself.

Certificates
QUALITY YOU CAN TRUST

Certificates

Service & Support

From our skilled and dedicated production team to our responsive customer service, we strive to provide the highest level of service and support to our valued customers worldwide.

Fast Lead

An industry-leading delivery window of 7-10 days for all standard orders.

Customizable

Support of private labeling and specialized packaging

Transparency

Provide visual status updates through images and videos at key points for real-time order tracking

Worry-free

Provide 1-3 years of product warranty based on different marine parts.

Get a Quick Quote

Let us know the product you like, your requirements, or anything we can help with. You will receive our response with a price quote and lead time estimate by the next business day.

Our Advantages

What makes us Us ?

As a leading aftermarket marine parts supplier, we differentiate ourselves by our dedication to service, quality, and value. Our experienced team strives to provide exceptional support and the highest-quality thermostats designed specifically for optimal performance and durability in marine engines. With extensive testing, customized options, and competitive pricing, we aim to exceed expectations.

Industry Experience
10+ years
warranty claim rate
Less than 1%
on-time delivery rate
97%
Model Coverage
90%
What are the key features of your Mercury Mercruiser thermostats?

Our Mercury Mercruiser thermostats are extensively tested to meet OEM specifications for precise fit and reliable function. Key features include:

  • 500 hours salt spray testing with no corrosion
  • 20,000 cycle life test to ensure durability
  • 1 year limited warranty against defects
Why should I choose your thermostats over other brands?

As a Mercruiser parts distributor, you need thermostats engineered specifically for Mercruiser inboards to ensure proper temperature control. Our thermostats are manufactured using specialized tooling and processes to match OEM design, providing a direct replacement you can trust.

How do you guarantee the quality and reliability?

Our Mercruiser thermostats are produced in an ISO-certified factory using strict quality control. Extensive testing during and after production ensures they meet the highest standards to give your customers lasting value.

What kind of warranty do you offer?

We provide a 1-year limited warranty against defects in materials and workmanship. This protects you from inventory loss due to quality issues. We stand behind our products.

What delivery options are available?

We understand timely supply is critical for your business. We offer customizable delivery options via air/sea freight to meet your requirements, and can ship directly to your warehouses globally.

How quickly can you fulfill my thermostat orders?

We aim to ship all in-stock orders within 1 week. For Made-to-Order requests, lead time is usually around 2-3 weeks. Our large inventory allows us to meet urgent needs promptly.

Can I request custom branding/packaging of thermostats for my business?

Absolutely, we offer custom printing/labeling on thermostat packaging and provide extra support like marketing materials to help promote our products through your business.

Contact Us Today,
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