Free Shipping on Orders $99+
Contact Us
Orders Product Guides
Boat Parts Worldwide

Mercruiser Sterndrive Cooling System

mercury mercruiser engine parts finder
Products: 1 - 50 of 160
Page:  1 | 2 | 3 | 4   Next >
Perko, Flush Pro Marine Engine Flush & Winterizing Kit

Perko, Flush Pro Marine Engine Flush & Winterizing Kit

Mfr. Perko | Mfr No. 0457DP7

The Flush Pro Valve Kit lets you flush and winterize your marine engine without climbing in and out of your boat. With the Flush Pro Kit you use a garden hose from outside your boat...
$139.68
On Sale


View Details
Mercruiser Water Pump Kit

Mercruiser Water Pump Kit

Mfr. Sierra | Mfr No. 18-3147

Mercruiser Water Pump Kit Replaces: 817275T4. For: Gen II-lower s/n D469859 and up...
$87.47
On Sale


View Details
Freshwater Block Cooling Kit, Mercruiser 4.3-5.7 L Chevy, V-Belt, '86-'95, SK 4802

Freshwater Block Cooling Kit, Mercruiser 4.3-5.7 L Chevy, V-Belt, '86-'95, SK 4802

Mfr. Seakamp Engineering | Mfr No. SK 4802

Freshwater Cooling Kit SK 4802 provides freshwater engine block cooling system for Chevy Small Block based Mercruiser V6 and V8 4.3 - 5.7 Liter (262-305-350 cid) sterndrives from 1986 thru 1995...
$1,079.77


View Details
Freshwater Block Cooling Kit, Mercruiser 4.3-5.7L, Serpentine Belt, '97-'01, SK 4806

Freshwater Block Cooling Kit, Mercruiser 4.3-5.7L, Serpentine Belt, '97-'01, SK 4806

Mfr. Seakamp Engineering | Mfr No. SK 4806

Freshwater Block Cooling Kit SK 4806 fits Chevy based Mercruiser V6 and V8 4.3 - 5.7 Liter (262-305-350 cid) carbureted engines with serpentine belt built from 1997-2001...
$1,078.57


View Details
Freshwater Block Cooling Kit, Mercruiser 4.3-5.8L, Serpentine Belt, '02-'06, SK 4808

Freshwater Block Cooling Kit, Mercruiser 4.3-5.8L, Serpentine Belt, '02-'06, SK 4808

Mfr. Seakamp Engineering | Mfr No. SK 4808

Freshwater Block Cooling Kit SK 4808 will keep Chevy based Mercruiser V6 and V8 4.3 - 5.8 Liter (262-305-350-357 replacement cid) carbureted engines using a serpentine belt built from 2002-2006...
$1,164.29


View Details
Freshwater Block Cooling Kit, Mercruiser 7.4 L V-Belt, '86-'97. SK 4804

Freshwater Block Cooling Kit, Mercruiser 7.4 L V-Belt, '86-'97. SK 4804

Mfr. Seakamp Engineering | Mfr No. SK 4804

Freshwater Block Cooling Kit SK 4804 fits Chevy Big Block based Mercruiser 7.4 Liter (454 CID) V-8 engines with V-belts produced from 1986 to 1997. This block only freshwater cooling...
$1,157.14


View Details
Freshwater Block Cooling Kit, Mercruiser 3.0L, I4 Engines, SK 4810

Freshwater Block Cooling Kit, Mercruiser 3.0L, I4 Engines, SK 4810

Mfr. Seakamp Engineering | Mfr No. SK 4810

Freshwater, Block Only Cooling Kit for Mercruiser 3.0L (181 cid) inline 4 cylinder engines will keep your boat engine at optimal operating temperature for better performance and longer life...
$971.43


View Details
Freshwater Cooling Kit, 4 Cylinder Off-Engine for Mercuiser & OMC, SK 4004

Freshwater Cooling Kit, 4 Cylinder Off-Engine for Mercuiser & OMC, SK 4004

Mfr. Seakamp Engineering | Mfr No. SK 4004

Off-Engine Freshwater Cooling Kit SK4004 built to keep 2.5 & 3.0L Inline 4 Cylinder Mercuiser & OMC boat engines at optimal operating temperatures for better performance and longer life...
$914.29


View Details
Full Freshwater Cooling Kit, Mercruiser 4.3-5.7 L Chevy Small Block, V-Belt, '86-'95, SK 4821

Full Freshwater Cooling Kit, Mercruiser 4.3-5.7 L Chevy Small Block, V-Belt, '86-'95, SK 4821

Mfr. Seakamp Engineering | Mfr No. SK 4821

Full Freshwater Cooling Kit SK 4821 gives you a full freshwater cooling system for Small Block Chevy based Mercruiser V6 and V8 4.3 5.7L (262-305-350 cid) engines with V-belts built from 1986-1995...
$1,323.36


View Details
Full Freshwater Cooling Kit, Mercruiser 4.3-5.7 L Serpentine Belt, '97-'01, SK 4825

Full Freshwater Cooling Kit, Mercruiser 4.3-5.7 L Serpentine Belt, '97-'01, SK 4825

Mfr. Seakamp Engineering | Mfr No. SK 4825

Full Freshwater Cooling Kit SK 4825 is for Mercruiser Chevy based V6 and V8 4.3 - 5.7 Liter carbureted engines with serpentine belt built from 1997-2001. This full freshwater cooling system...
$1,335.71


View Details
Full Freshwater Cooling Kit, Mercruiser 7.4 L V-Belt Chevy Big Block, '86-'97, SK 4823

Full Freshwater Cooling Kit, Mercruiser 7.4 L V-Belt Chevy Big Block, '86-'97, SK 4823

Mfr. Seakamp Engineering | Mfr No. SK 4823

Full Freshwater Cooling Kit SK 4823 built for Big Block Chevy based Mercruiser 7.4 Liter (454 CID) V-8 engines produced from 1986 thru 1997 with V-belts. This full fresh water cooling system...
$1,418.57


View Details
Mercruiser Oil Cooler

Mercruiser Oil Cooler

Mfr. Seakamp Engineering | Mfr No. 863904T

Mercruiser Oil Cooler...
$225.25


View Details
Thermostat Housing Kit - Mercruiser 861493A3

Thermostat Housing Kit - Mercruiser 861493A3

Mfr. Sierra | Mfr No. 18-1910

Thermostat Housing Kit - Mercruiser 861493A3. Fits: 3.0L GM 1999-Up, S/N 0L340999-Lower
$94.39


View Details
Thermostat Housing Kit - Mercruiser 87290A4

Thermostat Housing Kit - Mercruiser 87290A4

Mfr. Sierra | Mfr No. 18-1989

Replaces: 87290A4, 861006A1
$174.45
On Sale


View Details
Thermostat Housing, Mercruiser, 18-1994

Thermostat Housing, Mercruiser, 18-1994

Mfr. Sierra | Mfr No. 18-1994

Thermostat Housing, Mercruiser, 18-1994, AP# 5004. Replaces 87290A4...
$131.23


View Details
Thermostat Kit Mercruiser - 18-3651

Thermostat Kit Mercruiser - 18-3651

Mfr. Sierra | Mfr No. 18-3651

Thermostat Kit Mercruiser replacement, 18-3651, for use on Mercruiser Inboard/Outboard cooling systems...
$13.83
On Sale


View Details
Thermostat Kit Mercruiser - 18-3652

Thermostat Kit Mercruiser - 18-3652

Mfr. Sierra | Mfr No. 18-3652

Thermostat Kit Mercruiser - 18-3652. For use on Mercruiser Inboard/Outboard cooling systems...
$18.07
On Sale


View Details
Thermostat Kit Mercruiser - 18-3667

Thermostat Kit Mercruiser - 18-3667

Mfr. Sierra | Mfr No. 18-3667

Thermostat Kit Mercruiser - 18-3667. For use on Mercruiser Inboard/Outboard cooling systems...
$16.12
On Sale


View Details
Thermostat Kit Mercruiser - 18-3668

Thermostat Kit Mercruiser - 18-3668

Mfr. Sierra | Mfr No. 18-3668

Thermostat Kit Mercruiser - 18-3668. For use on Mercruiser Inboard/Outboard cooling systems...
$13.16
On Sale


View Details
Thermostat Kit - Mercruiser 807252T2, 27-47510, 27-53045-1

Thermostat Kit - Mercruiser 807252T2, 27-47510, 27-53045-1

Mfr. Sierra | Mfr No. 18-3644

Replaces Thermostat 160 Degree F. 807252T2, Cover Gasket 27-47510 & 27-53045-1
$17.93


View Details
Thermostat Kit Mercruiser - 18-3568

Thermostat Kit Mercruiser - 18-3568

Mfr. Sierra | Mfr No. 18-3568

Thermostat Kit Mercruiser - 18-3568. For use on Mercruiser 454, 340HP closed system thermostat kit. Replaces Mercruiser Part # 99155T1...
$14.00
On Sale


View Details
Thermostat Kit Mercruiser - 18-3650

Thermostat Kit Mercruiser - 18-3650

Mfr. Sierra | Mfr No. 18-3650

Thermostat Kit Mercruiser - 18-3650. For use on Mercruiser Inboard/Outboard cooling systems...
$15.00
On Sale


View Details
Thermostat Kit, 160 Degree Mercruiser - 18-3648

Thermostat Kit, 160 Degree Mercruiser - 18-3648

Mfr. Sierra | Mfr No. 18-3648

Thermostat Kit, 160 Degree Mercruiser - 18-3648. For use on Mercruiser Inboard/Outboard cooling systems...
$17.76


View Details
Thermostat Kit, Mercruiser, 18-3646

Thermostat Kit, Mercruiser, 18-3646

Mfr. Sierra | Mfr No. 18-3646

Thermostat Kit, Mercruiser, 18-3646, replaces Mercruiser # 807252Q3...
$16.53
On Sale


View Details
Thermostat Service Kit

Thermostat Service Kit

Mfr. Sierra | Mfr No. 18-1989K

Service Kit for 18-1989 Thermostat Housing
$10.85


View Details
Thermostat, 140 degree, Mercruiser, 18-3550

Thermostat, 140 degree, Mercruiser, 18-3550

Mfr. Sierra | Mfr No. 18-3550

Thermostat, 140 degree, Mercruiser, 18-3550, replacement for Mercruiser Inboard/Outboard #59078...
$15.57
On Sale


View Details
Thermostat, 160 Degree Mercruiser - 18-3649

Thermostat, 160 Degree Mercruiser - 18-3649

Mfr. Sierra | Mfr No. 18-3649

Replacement Thermostat, 160 Degree Mercruiser - 18-3649...
$17.51


View Details
Thermostat, 160 Degree, Crusader, Mercruiser - 18-3552

Thermostat, 160 Degree, Crusader, Mercruiser - 18-3552

Mfr. Sierra | Mfr No. 18-3552

Thermostat, 160 Degree, Crusader, Mercruiser - 18-3552, 165 - 229 ci, CH190/CH220, 305 ci and CH270, 350 ci and 454 ci...
$11.14
On Sale


View Details
Thermostat, 160 degree, Mercruiser, 18-3555

Thermostat, 160 degree, Mercruiser, 18-3555

Mfr. Sierra | Mfr No. 18-3555

Thermostat, 160 degree, Mercruiser, 18-3555. Replacement for Mercruiser Inboard/Outboard #99155A1...
$12.68
On Sale


View Details
Thermostat, Chevrolet, GM, Ford V8's, 142°, 18-3551

Thermostat, Chevrolet, GM, Ford V8's, 142°, 18-3551

Mfr. Sierra | Mfr No. 18-3551

Thermostat, Chrysler, GM, Ford V8's, 142°, 18-3551 for Raw Water cooled engines, Chrysler/Force/US. Marine, Crusader GM models, Pleasurecraft, Ford and Mercruiser Inboard/Outboards...
$9.98
On Sale


View Details
Thermostat, Mercury / Mariner, 120 F Replaces Mercury #14586

Thermostat, Mercury / Mariner, 120° F Replaces Mercury #14586

Mfr. Sierra | Mfr No. 18-3549

Thermostat, Mercury / Mariner, 120° F. For various Mercury and Mariner outboards. Replaces Mercury #14586...
$16.72
On Sale


View Details
Thermostat, Volvo, Mercury / Mariner, Johnson / Evinrude, Chrysler / Force / US. Marine, 143, 18-3557

Thermostat, Volvo, Mercury / Mariner, Johnson / Evinrude, Chrysler / Force / US. Marine, 143°, 18-3557

Mfr. Sierra | Mfr No. 18-3557

Thermostat, Mercury / Mariner, Johnson / Evinrude, Chrysler / Force / US. Marine, 143°, 18-3557...
$20.84


View Details
V-8 Thermostat Cover Gasket - Mercruiser - 18-2844

V-8 Thermostat Cover Gasket - Mercruiser - 18-2844

Mfr. Sierra | Mfr No. 18-2844

V-8 Thermostat Cover Gasket - Mercruiser - 18-2844. Replacement for Mercruiser Inboard/Outboard #27-48818-1.
$1.44


View Details
Mercruiser Lower Thermostat Housing, MC-29-87290

Mercruiser Lower Thermostat Housing, MC-29-87290

Mfr. Barr Marine by EDM | Mfr No. MC-29-87290

Mercruiser Lower Thermostat Housing, MC-29-87290, Replaces Mercruiser 87290A4...
$127.02
On Sale


View Details
Mercruiser Thermostat Housing Cover

Mercruiser Thermostat Housing Cover

Mfr. Barr Marine by EDM | Mfr No. MC-29-47442

Mercruiser Thermostat Housing Cover with off set bolt pattern...
$26.13
On Sale


View Details
Thermostat Housing, Small Block Chevrolet V6 & V8, CHV-29-80

Thermostat Housing, Small Block Chevrolet V6 & V8, CHV-29-80

Mfr. Barr Marine by EDM | Mfr No. CHV-29-80

Thermostat Housing, Small Block Chevrolet V6 & V8, CHV-29-80 for dual pump cooling system...
$103.79
On Sale


View Details
Barr, MerCruiser, Upper Thermostat Housing Assembly

Barr, MerCruiser, Upper Thermostat Housing Assembly

Mfr. Barr Marine by EDM | Mfr No. MC-29-47441

Barr, MerCruiser, Upper Thermostat Housing Assembly fits GM Models 225, 260, 228, 898/198...
$26.13
On Sale


View Details
Mercruiser Thermostat Housing Sleeve, 23-806922

Mercruiser Thermostat Housing Sleeve, 23-806922

Mfr. Quicksilver by Mercury | Mfr No. MERC-23-806922

Mercruiser Thermostat Housing Sleeve, 23-806922...
$9.93
On Sale


View Details
Thermostat Housing Replaces: 47441A1

Thermostat Housing Replaces: 47441A1

Mfr. Sierra | Mfr No. 18-1977-1

Fits 225, GM 260, 228, 898/198, 185R, 898R, 228R, 2GR
$38.98
On Sale


View Details
Thermostat Housing - Mercruiser 861188A1

Thermostat Housing - Mercruiser 861188A1

Mfr. Sierra | Mfr No. 18-3531

Thermostat Housing - Mercruiser 861188A1. Lifetime warranty on Sierra Thermostat Housings and other Sierra Engine Parts...
$229.15


View Details
Thermostat Housing - Mercruiser 90736A18

Thermostat Housing - Mercruiser 90736A18

Mfr. Sierra | Mfr No. 18-3678

Thermostat Housing - Mercruiser 90736A18Lifetime warranty on Sierra Thermostat Housings and other Sierra Engine Parts...
Not Currently Available

View Details
Mercruiser - Direct Replacement Heat Exchangers & Oil Coolers

Mercruiser - Direct Replacement Heat Exchangers & Oil Coolers

Mfr. Seakamp Engineering

Mercruiser direct replacement heat exchanger allows use of hot water cabin heater in cooler climates...
$115.78 - $1,231.51

View Details
Water Pump Upper Housing Repair Kit - 817275Q 4

Water Pump Upper Housing Repair Kit - 817275Q 4

Mfr. Quicksilver by Mercury | Mfr No. 817275Q4

Water Pump Upper Housing Repair Kit - 817275Q 4. Fits Alpha One - Gen II...
$123.09
On Sale


View Details
Water Pump Upper Housing Repair Kit, Mercury / Mariner, Mercruiser, 46-96148A 8

Water Pump Upper Housing Repair Kit, Mercury / Mariner, Mercruiser, 46-96148A 8

Mfr. Quicksilver by Mercury | Mfr No. 96148A8

Water Pump Upper Housing Repair Kit, Mercury / Mariner, Mercruiser, 46-96148A 8. Fits Mercury/Mariner 65 hp (4 cylinder) Through V-6 outboards with short-vane impellers and fits MerCruiser...
$43.62
On Sale


View Details
Complete Pump Housing Kit Mercruiser - 18-3320

Complete Pump Housing Kit Mercruiser - 18-3320

Mfr. Sierra | Mfr No. 18-3320

Complete Pump Housing Kit Mercruiser - 18-3320. For Mercruiser Inboard/Outboard #1 Units thru S/N D494568.
$31.55
On Sale


View Details
Complete Pump Housing Kit Mercruiser - 18-3321

Complete Pump Housing Kit Mercruiser - 18-3321

Mfr. Sierra | Mfr No. 18-3321

Complete Pump Housing Kit Mercruiser - 18-3321. For Mercruiser Inboard/Outboard cooling system...
$57.57
On Sale


View Details
Complete Water Pump Housing Kit For Mercruiser, 18-3317

Complete Water Pump Housing Kit For Mercruiser, 18-3317

Mfr. Sierra | Mfr No. 18-3317

Complete Water Pump Housing Kit For Mercruiser, 18-3317. Complete kit contents listed...
$34.25
On Sale


View Details
Mercruiser Water Pump Kit, Fits All Bravo Engines Replaces: 47-59362Q08

Mercruiser Water Pump Kit, Fits All Bravo Engines Replaces: 47-59362Q08

Mfr. Sierra | Mfr No. 18-3318

Mercruiser Water Pump Kit, Fits All Bravo Engines Replaces: 47-59362Q08. Mercruiser Water Pump Kit- Fits All Bravo (2 Piece Body)...
$46.46
On Sale


View Details
Upper Pump Housing Unit w/o Base-Mercury / Mariner, 18-3517

Upper Pump Housing Unit w/o Base-Mercury / Mariner, 18-3517

Mfr. Sierra | Mfr No. 18-3517

Mercury/Mariner Outboard #46-60367A1, 46-96148A5. Merc Sterndrive: 32437A1,32437A3, 37433A1, 42579A4, 44292A4, 48747A3,57234A3, 58618A4,60367A1...
$24.31
On Sale


View Details
Water Pump Kit, Mercruiser - 18-3309

Water Pump Kit, Mercruiser - 18-3309

Mfr. Sierra | Mfr No. 18-3309

Water Pump Kit, Mercruiser - 18-3309. Fits MerCruiser engines with a plastic 2-piece body seawater pump...
$22.45
On Sale


View Details
Products: 1 - 50 of 160
Page:  1 | 2 | 3 | 4   Next >

Ask. Answer. Discuss.
Post a question or comment about Mercruiser Sterndrive Cooling System to our online boating community.
Question
For a Merc 120 1967 model----Which way is "up" for the thermostat

For a Merc 120 1967 model—-Which way is "up" for the thermostat. It appears it could go either way. Anyway it is overheating with a 140 degree stst.

Submitted by: Phil
Answer

The end with the spring goes in towards the engine. Have you changed the water pump impeller?


 
Name / Nickname:

Email:
(optional)


Type of Submission:

Subject:

Message:
Tips on Reviewing:
  • How you use the product
  • What you like about this product
  • How can this product be improved
  • When asking about Engine Parts, please include: Year, Make, Model and Serial Number of engine or part

Please do not include: personal information, profanity or copyrighted works. Conditions of Use