10 Best Gasket Mercruiser Thermostats - Of 2023
If you are looking for a product that can help make your life simple, you have come to the right place. The market is filled with different types of products that vary in features and specifications. Choosing the right gasket mercruiser thermostats can be a hassle. The following guide will help you choose the gasket mercruiser thermostats that best suit your needs.

We all want to pick a beautiful, sturdy, and durable product, but there are so many products available in the market that it can be confusing to choose one. This article will help you choose the right gasket mercruiser thermostats more easily.

10 gasket mercruiser thermostats: Editor Recommended

10 gasket mercruiser thermostats Review:

1. Thermostat Kit 160°with Gaskets & Plastic Sleeve 23-806922 Replacement 807252Q5 18-3647

Features :

  • Aftermarket Complete Marine Thermostat Kit, Direct Replacement for Sierra Mercruiser
  • Contains 1 x Thermostat Housing Sleeve 23-806922; 4 Different Thermostat Gaskets; 1 x Thermostat 18-3649
  • High Quality Thermostat & Gasket, Offering Good Durability & Long Service Life
  • Quality Inspection Before Shipment to Ensure Thermostat in High Performance
  • Replacement for Mercruiser V6 & V8 4.3L, 5.0L, 5.7L, 7.4L,8.2L 1987-Up

Additional Info :

2. Thermostat Kit For Mercruiser 807252Q5 1987-UP Sierra 18-3647 gaskets Sleeve for 4.3L 5.0L 5.7L 7.4L 8.2L 160°

Features :

  • .Fitment For 1987-2016 MerCruiser V-6 & V-8 GM inboard/outdrive engines, 4.3L, 5.0L, 5.7L, 7.4L,8.2L 1987-Up.
  • Replaces Part Numbers: 807252Q5 23-806922 23806922 806922 18-3647 13101 807252T8, 807252T5 9-43157
  • Package Included:1 x Thermostat Housing Sleeve (23-806922), 4 x Different Thermostat Gaskets, 1 x Thermostat 160°(Replaces Merc Part #: 808252) 8M0109441
  • Thermostat kit for 1987 and newer GM engines with 160 degree thermostat and standard cooling.
  • Replacement:GLM Part # 13101,Replaces Merc Part #: 807252Q5,Replaces Sierra Part #: 18-3647 (no plastic sleeve)

3. A.A Thermostat & Gasket Replacement for MerCruiser 3.0L 2.5L 4, 6 Cylinder 140, 120 HP – 18-3650, 59078T3

Features :

  • Replaces Part #’s: 59078T3, 59078Q3, 59078A1, 59078B, 59078, 47590, 18-3650, 18-2831, 18-3550, 27-47590-1, 9-43153
  • Includes: 1x Thermostat (59078, 18-3550), 1x Gasket (27-47590-1, 47590, 18-2831)
  • For Use On the Following MerCruiser Models: 120 – 2.5L / L4 – 153 / 1968-1989 / 2324347 – 0C853255, 140 – 3.0L / L4 – 181 / 1968-1989 / 2508261 – 0C856558, 3.0L / L4 – 181 / 1990-1994 / 0C856559 -0F603999, 3.0L / L4 – 181 / 1998-2000 / 0L010042 – 0L340999, 3.0L LX / L4 – 181 / 1990-1997 / 0C856559 – 0K999999, 165 / L6 – 250 / 1970-1971 / 2770032 – 5813433

4. Mercruiser OEM Thermostat Housing Cover Gasket 27-530451

Features :

  • Gasket has brass grounding rivets
  • High quality
  • Easy to install
  • Superseded From: 53045,53045B1,33179,FI1101291,F10077105,FI1101276,FI5000096

Additional Info :

Item Dimensions
Height 3
Width 2
Length 3
Weight 0.00220462262

5. MAIMEIMI Mercruiser Thermostat Kit 160°with Gaskets & Plastic Sleeve for V6 and V8, 4.3L 5.0L 5.7L 7.4L 8.2L 1987-Up Replace#807252Q5 18-3647 13101

Features :

  • 【Package】: Thermostat Kit Includes:1*160 Degree Thermostat, 1*Plastic Sleeve, 4*Cover Gasket.
  • 【Replacement Part Number】: 807252Q5, 807252T8, 807252T5, 23-806922, 23806922, 806922, 18-3647, 13101, 9-43157.
  • 【Compatible】: This thermostat kit compatible with MerCruiser V6 & V8 GM inboard/outdrive engines (except high performance engines) 4.3L 5.0L 5.7L 7.4L 8.2L 1987-Up.
  • 【High Quality】: This mercruiser thermostat kit 807252Q5 is stable performance, durable and long life, 160°(F) standard cooling.
  • 【Sales Service】: If you have any qustion about the thermostat gasket, please contact us via the message or e-mail, we provide a 100% satisfied and happy after sale service.

Additional Info :

6. Boat Thermostat Kit Thermostat Gasket 807252Q5 Replacement for MerCruiser with Sleeve 160° 4.3L 5.0L 5.7L 7.4L 8.2L 1987 Up

Features :

  • PERFECT FITMENT — Boat thermostat kit is replacement for MerCruiser with Sleeve 160° 4.3L 5.0L 5.7L 7.4L 8.2L 1987 Up, perfect matching.
  • REPLACE PART NUMBER — The part number of replacement thermostat kit is 807252Q5, replacement for Sierra 18‑3647, according to original standard.
  • ABS + METAL —Thermostat kit is made of high quality ABS and metal material, rustproof, high strength, sturdy and durable.
  • EASY INSTALLATION — Thermostat Gasket is easy to install and disassemble, convenient for using, save your time and energy.
  • EXCELLENT PERFORMANCE — Professional manufacturing, exquisite workmanship, high accuracy, stable performance and high reliability.

Additional Info :

Color popular

7. Cylinman 807252Q5 Thermostat Kit 160° with Gasket and Plastic Sleeve Replaces 807252Q5| 807252T8| 807252T5 fit for Mercruiser V6&V8 GM engines 4.3L, 5.0L, 5.7L, 7.4L, 8.2L 1987-2016

Features :

  • 【Replacement Part Number】:807252Q5, 807252T8, 807252T5.
  • 【Fitment】:Compatible with 1987-2016 MerCruiser V6 & V8 GM inboard/outdrive engines (except high performance engines) with standard cooling requiring a 160° (F) thermostat.
  • 【Package Included】:1 x Thermostat Housing Sleeve (23-806922), 4 x Different Thermostat Gaskets, 1 x Thermostat (18-3649).
  • 【High Quality】:High quality and brand new products, stable performance and durable.
  • 【Note】:Please make sure the product are the same with what you want before purchasing. If you are unsure of the item, please feel free to contact us.ALL Emails will be replied within 24H.

Additional Info :

8. Thermostat Kit 160° Replace 807252Q5 with Gaskets Sleeve Replace 23-806922 Fit for Mercruiser 4.3L 5.0L 5.7L

Features :

  • Compatible Models: Compatible with MerCruiser V6 and V8 GM inboard / outdrive engines, with standard cooling requiring a 160° thermostat
  • Replace Part Numbers: Replace 807252Q5, 23-806922, 23806922, 806922, 18-3647, 13101, 807252T8, 807252T5 9-43157
  • Excellent Performance: Thermostat kit perfect replacement for a thermostat that does not work properly, ensuring stable performance and long-term use
  • Simple installation: A complete set of installation kits saves you the trouble of installation, and gasket with rivets make installation more efficient, saving you time and money
  • Package Includes: 1 x Thermostat Housing Sleeve (23-806922), 4 x Different Thermostat Gaskets( 27-48818-1,27-33179-2, 27-47510, 27-53045-1), 1 x Thermostat (18-3649)

Additional Info :

9. 807252Q5 Thermostat Kit 160° with Gasket and Plastic Sleeve Fits for Mercruiser V6 V8 GM Engines 1987-2016 Replace 807252T5 807252T8 23806922

Features :

  • Fitment: The 160℉ thermostat kit fits for Mercruiser V6 & V8 inboard/ outdrive engines 1987 and newer with standard cooling requiring a 160° (F) thermostat. Not for high performance engines
  • Replace Part Number: 23-806922, 23806922, 807252Q5, 807252T5, 807252T8, 806922
  • Package Included: 807252Q5 thermostat kit includes 1 x thermostat, 1 x sleeve, 3 x cover gaskets, 2 x housing gaskets, 1 x o-ring
  • Proper Engine Temperature: The thermostat kit is used to replace a non-functioning thermostat, proper engine temperature ensures optimum performance and efficiency
  • Easy to Install: A complete set of installation kits make your installation easier, and gasket with metal rivets make installation more efficient, saving you time and money

Additional Info :

10. Jofynzo Thermostat Kit 160 Degree 807252Q5 and Gaskets Sleeve 23-806922 for Mercury for Marine for Mercruiser 4.3 5.0 5.7 V6 V8 Engine Replace 807252T5 807252T8 23806922 ‎ 807252T 5

Features :

  • Replace Part Number: 23-806922, 23806922, 807252T 5, 807252Q5, 807252T5, 807252T8.
  • Fit: For MerCruiser engines V-6 and V-8 (except high performance engines) made by General Motors (model year 1987 and newer) with standard cooling requiring a 160 degree (F) thermostat.
  • Includes: 1 x Thermostat, 1 x Sleeve, 3 x Cover Gaskets, 2 x Housing Gaskets & 1 x O-Ring, comes as shown in the first image.
  • Note: Please check the part number before purchase.
  • Ensure: If there is any problem with the product, please do not hesitate to contact us, we will help you solve the problem.
  • Fit type: Vehicle Specific

Additional Info :

Buying Guide: What To Look For When Select gasket mercruiser thermostats: 

If you want to purchase products, follow a buying guide. Some features need to tick your products before buying. Let’s take a look at them:

  • Product Quality: The product must be of high quality. If the product is not of high quality, it will break down quickly and need repairing.
  • Price: The price of the product should be reasonable. The product must be within your budget so that you do not have any financial constraints while using it.
  • Brand reputation: The brand name should be well known in the market and has been around for a long time so that its reputation can be trusted and its quality can be ensured.

gasket mercruiser thermostats: Tips for Buying Online Safely

Online shopping has become a part of our everyday lives. The convenience of purchasing items from anywhere at any time is hard to beat. But it’s not all roses and sunshine. There are some real concerns when buying gasket mercruiser thermostats from online:

1. Use a Secure Wifi or Internet Connection

Although it is comfortable and easy to browse and buy through public networks, malls or stores, the truth is that these networks are often unreliable. Hackers and cybercriminals can easily capture the information packets transmitted over public connections. For this reason, we recommend you go through a secure network to make purchases or transactions in which you transfer personal information.

2. Keep Your Computer Updated and Protected

Online shopping is one of the processes in which more personal and dangerous information is transferred. Therefore, before shopping, ensure your computer is secure, updated and equipped with a good antivirus product.

3. Buy on Known and Reputable Websites

Searching the internet for the best offers can take you to the unknown and unreliable. Stay away from them. Check that the URL of the web site matches where you think it is, and its address begins with https. Shopping at trusted and reputable websites can prevent identity theft or data victims.

4.  Find and Review Privacy and Return Policies

Before buying from an online store, ensure that their Privacy Policy is easily located on the site and up to date. Do you know what to do if your gift is not right? How can you return it? These are also aspects to consider when choosing where to shop.

5. Only Share Personal Information That is Necessary and Only on a Secure Form

If it surprises you that they ask you for some personal information (mobile, relatives’ name, place of birth …) to carry out the purchase, do not do it, and it checks that you are in the correct place. In addition, tools such as the virtual keyboard of Panda Security can avoid data theft if your computer is infected with some virus spyware.

6. Avoid Links in Emails and Ads

Is the offer you received in an email too good to be true? Then, it probably is. During this time of year, e-mails and ads with offers and big discounts are a tool widely used by cybercriminals. Avoid phishing.

7. Periodically Check Your Credit Card Transactions

After making several purchases online, check that all charges on your account are known and controlled. If you find any suspicious activity, contact your bank. Maybe you’ve been a victim of identity theft.


There are many brands in the global and local market to choose from, but not all of them will offer you the gasket mercruiser thermostats. The key is finding a good brand that offers quality and value for your purchase. When choosing a good brand, critical considerations include customer reviews about their products, warranty policy, how long they’ve been around, and what other customers have said about their service record. We hope this post may help you narrow down your search so that now making an informed decision on which one to buy should be much easier!


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