Looking for the best Mercedes coolant thermostats? We’ve researched and compiled a list of top picks to help you keep your car running smoothly and prevent overheating.
Keeping your Mercedes running smoothly starts with the right parts. The coolant thermostat is key to preventing overheating and ensuring peak performance. We’ve researched the best options to help you make an informed choice.
From direct replacements to upgraded assemblies, these parts are built to last. They fit multiple Mercedes models and come with easy installation features. You’ll find durable materials and strict quality testing for reliable results.
Save time, avoid leaks, and drive with confidence. Let’s explore the top picks for your Mercedes.
List of Top 10 Mercedes Coolant Thermostats
| Image | Title | Best For | Price |
|---|---|---|---|
![]() |
Engine Coolant Thermostat Housing Water Outlet 2702000615 for Mercedes CLA250 GLA250 CLA45 AMG GLA45 AMG 2.0L – Replaces 2702002200 and 2702000415 |
This Engine Coolant Thermostat Housing Water Outlet is perfect for Mercedes owners with CLA250, GLA250, CLA45 AMG, or GLA45 AMG 2.0L models. It’s ideal if you’re fixing coolant leaks or thermostat issues to keep your engine running smoothly. |
|
![]() |
902-5844 Coolant Thermostat Housing Compatible with Mercedes-Benz 2012-2018 |
This coolant thermostat housing is perfect for Mercedes-Benz owners who need a reliable replacement part. It’s ideal for keeping your engine cool and preventing overheating. |
|
![]() |
A-Premium Upgraded Aluminum Engine Coolant Thermostat Housing Assembly |
This A-Premium Upgraded Aluminum Engine Coolant Thermostat Housing Assembly is perfect for Mercedes-Benz owners who want reliable engine cooling. It’s easy to install and built to last, ensuring your car runs smoothly. |
|
![]() |
MITZONE Engine Coolant Thermostat compatible with 2015-2022 Mercedes Benz C180 C200 C350E E300 GLC250 300 350E SLC180 200 300 SLK 300 Replace A2742000115 2742003100 |
This MITZONE Engine Coolant Thermostat is perfect for Mercedes-Benz owners who need a reliable replacement part. It’s ideal for keeping your engine running smoothly and at the right temperature. |
|
![]() |
FORRIE Engine Coolant Thermostat with Housing Compatible with Mercedes Benz CL550 CL63 CLS63 GL450 ML550 S63 AMG S G63 GLS63 CLS550 E550 E63 GL550 GLE63 S550 SL550 E63 Replaces 2782000815 |
This engine coolant thermostat is perfect for Mercedes-Benz owners who want a reliable and easy-to-install replacement part. It’s ideal for keeping your engine at the right temperature, ensuring smooth performance and long-lasting durability. |
|
![]() |
Thermostat Housing Replacement for Mercedes C300 C350e E300 GLC300 2015-20 |
This thermostat housing replacement is perfect for Mercedes owners who need a reliable, compatible part. It fits C300, C350e, E300, GLC300, and more from 2015 to 2020. |
|
![]() |
A-Premium Engine Coolant Thermostat Housing Assembly |
This A-Premium Engine Coolant Thermostat Housing Assembly is perfect for Mercedes-Benz owners who need a reliable replacement part. It’s easy to install and built to last, ensuring your car runs smoothly. |
|
![]() |
MOTOKU Engine Coolant Thermostat Assembly w/housing Gasket |
This MOTOKU Engine Coolant Thermostat Assembly is perfect for Mercedes-Benz owners with SLK250 or C250 models from 2012 to 2015. If your car needs a replacement part with number 2712000315 or 410389103D, this is the right choice. |
|
![]() |
GZGN Thermostat Housing Assembly Compatible with Mercedes-Benz W205 Seirese C300 2015-2018,C350e 2016-2018,E300 2017-2019,GLC300 2016-2019,SLC300 2017-2019,SLK300 2016,2.0L,OEM#A2742000115 2742003400 |
This thermostat housing assembly is perfect for Mercedes-Benz owners who need a reliable replacement part. It fits specific models like the C300, E300, and GLC300, ensuring your engine stays at the right temperature. |
|
![]() |
X AUTOHAUX 902-5844 Engine Coolant Thermostat Housing Assembly for Mercedes-Benz E350 2012-2016 for Mercedes-Benz GLE350 2016 2762000115 |
This thermostat housing assembly is perfect for Mercedes-Benz owners who need a reliable replacement part. It’s easy to install and fits multiple models, making it ideal for DIY repairs. |
Detailed Reviews
Discover the top 10 Mercedes Coolant Thermostats handpicked for performance and value. Each product is expert-reviewed and backed by customer feedback, ensuring you find the perfect fit for your car. Whether you prioritize reliability, affordability, or ease of installation, this guide has you covered.
1. Engine Coolant Thermostat Housing Water Outlet 2702000615 for Mercedes CLA250 GLA250 CLA45 AMG GLA45 AMG 2.0L – Replaces 2702002200 and 2702000415

Keep your Mercedes running cool with this Engine Coolant Thermostat Housing Water Outlet. It’s a direct replacement for CLA250, GLA250, CLA45 AMG, and GLA45 AMG 2.0L models. Replaces part numbers 2702000615, 2702002200, and 2702000415.
Made from high-quality materials, this water outlet withstands extreme temperatures and prevents coolant leaks. It ensures your engine stays smooth and reliable.
Easy to install, this direct fit design saves you time and hassle. It regulates coolant flow, prevents overheating, and keeps your engine performing at its best.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This Engine Coolant Thermostat Housing Water Outlet is perfect for Mercedes owners with CLA250, GLA250, CLA45 AMG, or GLA45 AMG 2.0L models. It’s ideal if you’re fixing coolant leaks or thermostat issues to keep your engine running smoothly.
Ready to Purchase?
2. 902-5844 Coolant Thermostat Housing Compatible with Mercedes-Benz 2012-2018

The 902-5844 Coolant Thermostat Housing is a reliable replacement for your Mercedes-Benz. It regulates coolant flow to keep your engine at the right temperature. This part prevents overheating, ensuring your car runs smoothly.
Made from high-quality materials, this thermostat housing is built to last. Each unit undergoes strict quality testing before shipping. You can trust its durability and performance.
This part is compatible with multiple Mercedes-Benz models from 2012 to 2018. Always check your vehicle’s OE number before buying. Professional installation is recommended for best results.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This coolant thermostat housing is perfect for Mercedes-Benz owners who need a reliable replacement part. It’s ideal for keeping your engine cool and preventing overheating.
Ready to Purchase?
3. A-Premium Upgraded Aluminum Engine Coolant Thermostat Housing Assembly

Keep your Mercedes-Benz running cool with the A-Premium Upgraded Aluminum Engine Coolant Thermostat Housing Assembly. This direct-fit replacement is designed for a wide range of Mercedes-Benz models.
Precision engineering ensures a perfect fit and reliable performance. It comes with everything needed for installation, including a thermostat, gasket, housing, and sensor. Strict quality tests guarantee durability and optimal engine temperature control.
Buy with confidence knowing A-Premium offers a one-year unlimited-mileage guarantee. Their wide range of automotive accessories ensures you can find everything you need to keep your car running smoothly.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This A-Premium Upgraded Aluminum Engine Coolant Thermostat Housing Assembly is perfect for Mercedes-Benz owners who want reliable engine cooling. It’s easy to install and built to last, ensuring your car runs smoothly.
Ready to Purchase?
4. MITZONE Engine Coolant Thermostat compatible with 2015-2022 Mercedes Benz C180 C200 C350E E300 GLC250 300 350E SLC180 200 300 SLK 300 Replace A2742000115 2742003100

Keep your Mercedes-Benz running smoothly with the MITZONE Engine Coolant Thermostat. It’s compatible with many models from 2015 to 2022. This part helps your engine stay at the right temperature.
The thermostat regulates coolant flow to the radiator. It reduces engine wear and prevents overheating. Made of durable plastic, it includes all necessary parts for easy installation.
Check your vehicle model before buying. Contact us if you have questions. We’re here to ensure your satisfaction.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This MITZONE Engine Coolant Thermostat is perfect for Mercedes-Benz owners who need a reliable replacement part. It’s ideal for keeping your engine running smoothly and at the right temperature.
Ready to Purchase?
5. FORRIE Engine Coolant Thermostat with Housing Compatible with Mercedes Benz CL550 CL63 CLS63 GL450 ML550 S63 AMG S G63 GLS63 CLS550 E550 E63 GL550 GLE63 S550 SL550 E63 Replaces 2782000815

The FORRIE Engine Coolant Thermostat is a perfect fit for many Mercedes-Benz models. It replaces OE numbers like 2782000815 and 2782000615.
Made from premium materials, it resists rust and corrosion. It’s lightweight, sturdy, and works well in high-temperature engines.
It controls coolant flow to keep the engine at the right temperature. Easy to install, even for basic DIYers. One-year warranty and unlimited support included.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This engine coolant thermostat is perfect for Mercedes-Benz owners who want a reliable and easy-to-install replacement part. It’s ideal for keeping your engine at the right temperature, ensuring smooth performance and long-lasting durability.
Ready to Purchase?
6. Thermostat Housing Replacement for Mercedes C300 C350e E300 GLC300 2015-20

Replace your Mercedes thermostat housing with this high-quality part. It fits many models from 2015 to 2020.
This part works for C300, E300, GLC300, and more. It matches OEM numbers for a perfect fit. You get reliable performance every time.
Installation is simple and fast. The part is built to last. It keeps your engine running smoothly.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This thermostat housing replacement is perfect for Mercedes owners who need a reliable, compatible part. It fits C300, C350e, E300, GLC300, and more from 2015 to 2020.
Ready to Purchase?
7. A-Premium Engine Coolant Thermostat Housing Assembly

The A-Premium Engine Coolant Thermostat Housing Assembly is a reliable replacement part for your Mercedes-Benz. It fits multiple models and ensures your engine stays cool. This part is built to last and works perfectly.
It comes with a one-year guarantee, so you can drive with confidence. The housing is made of durable material and includes a gasket for a secure fit.
This assembly is easy to install and meets high standards. It’s a smart choice for keeping your car running smoothly.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This A-Premium Engine Coolant Thermostat Housing Assembly is perfect for Mercedes-Benz owners who need a reliable replacement part. It’s easy to install and built to last, ensuring your car runs smoothly.
Ready to Purchase?
8. MOTOKU Engine Coolant Thermostat Assembly w/housing Gasket

Keep your engine cool and run smooth. This thermostat assembly fits your Mercedes-Benz C250 or SLK250. It replaces part numbers 2712000315 and 410389103D with ease.
Overheating can damage your car fast. This strong housing gasket stops coolant leaks. You get top value for a safe ride.
Install it fast and drive happy. Buy your new thermostat today!
| Pros | Cons |
|---|---|
|
|
Perfect For:
This MOTOKU Engine Coolant Thermostat Assembly is perfect for Mercedes-Benz owners with SLK250 or C250 models from 2012 to 2015. If your car needs a replacement part with number 2712000315 or 410389103D, this is the right choice.
Ready to Purchase?
9. GZGN Thermostat Housing Assembly Compatible with Mercedes-Benz W205 Seirese C300 2015-2018,C350e 2016-2018,E300 2017-2019,GLC300 2016-2019,SLC300 2017-2019,SLK300 2016,2.0L,OEM#A2742000115 2742003400

The GZGN Thermostat Housing Assembly is a perfect fit for many Mercedes-Benz models. It works with C300, C350e, E300, GLC300, SLC300, and SLK300. This part is made for 2.0L engines.
It replaces OEM parts like A2742000115 and 2742003400. The package includes a gasket, seal, and thermostat. Everything is ready for easy installation.
This thermostat housing is tested for strength and long-lasting use. It keeps your engine cool and running smoothly. GZGN offers a one-year guarantee for peace of mind.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This thermostat housing assembly is perfect for Mercedes-Benz owners who need a reliable replacement part. It fits specific models like the C300, E300, and GLC300, ensuring your engine stays at the right temperature.
Ready to Purchase?
10. X AUTOHAUX 902-5844 Engine Coolant Thermostat Housing Assembly for Mercedes-Benz E350 2012-2016 for Mercedes-Benz GLE350 2016 2762000115

This brand new thermostat housing assembly is a direct replacement for your old Mercedes part. It fits many 2012–2016 Mercedes models like E350 and GLE350.
Its official OE number 902-5844 2762000115 matches your car’s original part. A bad old part causes engine overheating, weird temperature changes, or coolant leaks. It installs easily with basic car tools.
The package includes 1 complete thermostat housing assembly, ready to use. It keeps your engine at the right temperature for smooth, safe driving.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This thermostat housing assembly is perfect for Mercedes-Benz owners who need a reliable replacement part. It’s easy to install and fits multiple models, making it ideal for DIY repairs.
Ready to Purchase?
Buying Guide
Keep your Mercedes running cool with the right coolant thermostat. We’ve researched the best options to help you choose wisely. Let’s explore what makes a great fit for your car.
Factors to Consider When Buying a Mercedes Coolant Thermostat
-
Compatibility:
Check your Mercedes model and year. Make sure the part fits your specific engine. Always verify the OEM number to avoid mistakes. -
Material Quality:
Look for durable materials like aluminum or high-grade plastic. These resist heat, rust, and corrosion, ensuring a longer lifespan. -
Ease of Installation:
Choose parts with direct-fit designs or complete kits. This saves time and makes installation hassle-free, even for DIYers. -
Performance:
A good thermostat regulates coolant flow and prevents overheating. It keeps your engine at the right temperature for smooth performance. -
Warranty:
Opt for parts with a guarantee. A one-year warranty or more gives you peace of mind and shows the manufacturer’s confidence. -
Price vs. Value:
Compare prices, but don’t sacrifice quality. A reliable part saves money in the long run by avoiding leaks or failures. -
Brand Reputation:
Stick with trusted brands known for strict quality testing. This ensures you get a part that’s built to last. -
Included Components:
Some kits come with gaskets, seals, or sensors. These extras make installation easier and ensure a secure fit.
Drive with confidence knowing you’ve chosen the best coolant thermostat for your Mercedes. Your engine will thank you!