How to remove, test, and refit a thermostat on Mercedes-Benz 190E?

The thermostat is located in a housing bolted to the side of the coolant pump. Begin by disconnecting the battery negative cable and draining the cooling system. Detach the coolant hose from the thermostat cover by slackening the clip. Unscrew the securing bolts to remove the thermostat cover; if it is stuck, gently tap or rock it to free it without levering between the mating faces. Recover the seal and lift the thermostat from its housing, noting its orientation. To test the thermostat, suspend it in a container of water and heat the water to boiling; it should open by that point. For precise testing, use a thermometer to check the opening temperature against the specifications marked on the thermostat. A thermostat that fails to close completely as the water cools is also faulty. For refitting, clean the mating faces of the cover and housing, then place the thermostat back in, ensuring the spring-loaded side faces into the housing. On diesel models, align the thermostat rim's recess with the rib on the housing cover, while on petrol models, position the thermostat so the air bleed valve is at the highest point. Lay a new seal in position on the housing, fit the cover, and secure it with bolts tightened to the specified torque. Reconnect the coolant hose and refill the cooling system.

What should you check before assuming the thermostat is responsible for a cooling system problem on Mercedes-Benz C230?

Probably everyone knows by the time they reach adulthood that, before assuming something is wrong in a cooling system, the first step is to look at the amount of coolant in the system, the tightness of its drive-belt, or the operation of its temperature gauge or temperature light. When it takes a long time before the engine warms up, it is possible that the thermostat has become stuck open, and should be changed. When the engine is too hot to run, or overheats, the thermostat should also be extensively tested, which in turn cannot be done unless the thermostat is out of the car. When the thermostat will not close at room temperature, it is not functioning properly, and needs to be replaced; the interim economy and the emissions of driving cars and trucks without the thermostat can be detrimental. To test a thermostat, place it in a container of cold water together with a thermometer, warm the water and record the temperature at which the thermostat starts to open and when it is completely open and compare this to the specs. In case the thermostat is not opening and closing as per specifications or becomes stuck in any position it needs replacement. To replace: drain the engine coolant, take out the trim panel and coolant hose(s) in the cover of the thermostat housing, and unbolt the housing cover. Wipe down the surfaces, replace an O-ring, and reassemble everything in reverse, also refilling and bleeding the cooling system and inspecting for leaks and correct functionality. Other procedures to be followed correspond to the type of engine to be installed; e.g., before installation, hoses must be removed, all old gaskets and sealants cleaned and serpentine belt must be removed.

Genuine Mercedes-Benz Thermostat

Engine Coolant Thermostat

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

53 Thermostats found

View related parts
Mercedes-Benz Thermostat
Part Number: 116-200-03-15
$43.20 MSRP: $60.00
You Save: $16.80 (28%)
Ships in 1-2 Business Days
ADD TO CART
Fits the following Mercedes-Benz Models:
- 400SE | 1992 | Base | 8 Cyl 4.2 L GAS
- 400SEL | 1993 | Base | 8 Cyl 4.2 L GAS
- 500SEL | 1992-1993 | Base | 8 Cyl 5.0 L GAS
- 500SL | 1990-1993 | Base | 8 Cyl 5.0 L GAS
- S420 | 1994-1995 | Base | 8 Cyl 4.2 L GAS
- S500 | 1994-1995 | Base | 8 Cyl 5.0 L GAS
- SL500 | 1994-1995 | Base | 8 Cyl 5.0 L GAS
View More
View related parts
Mercedes-Benz Thermostat
Part Number: 271-200-00-15
$26.23 MSRP: $36.00
You Save: $9.77 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat
- Replaced by: 271-203-05-75
Fits the following Mercedes-Benz Models:
- C230 | 2003-2005 | Kompressor | 4 Cyl 1.8 L GAS
View related parts
Mercedes-Benz Thermostat Housing
Part Number: 112-203-02-75
$42.60 MSRP: $60.00
You Save: $17.40 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat Element; Thermostat Housing
- Replaces: 112-200-00-15, 112-200-00-15-28
Fits the following Mercedes-Benz Models:
- C240 | 2001-2005 | 4Matic, Base | 6 Cyl 2.6 L GAS
- C280 | 1998-2000 | Base | 6 Cyl 2.8 L GAS
- C320 | 2001-2005 | 4Matic, Base | 6 Cyl 3.2 L FLEX, 6 Cyl 3.2 L GAS
- C55 AMG | 2005 | Base | 8 Cyl 5.5 L GAS
- CL500 | 2000-2006 | Base | 8 Cyl 5.0 L GAS
- CL55 AMG | 2001-2006 | Base | 8 Cyl 5.5 L GAS
- CLK320 | 1998-2005 | Base | 6 Cyl 3.2 L GAS
- CLK430 | 1999-2003 | Base | 8 Cyl 4.3 L GAS
- CLK500 | 2003-2006 | Base | 8 Cyl 5.0 L GAS
- CLK55 AMG | 2001-2006 | Base | 8 Cyl 5.5 L GAS
View More
View related parts
Mercedes-Benz Thermostat
Part Number: 601-200-00-15
$31.72 MSRP: $43.50
You Save: $11.78 (28%)
Ships in 1-2 Business Days
ADD TO CART
Fits the following Mercedes-Benz Models:
- 190D | 1984-1989 | 2.2, 2.5, 2.5 Turbo | 4 Cyl 2.2 L DIESEL, 5 Cyl 2.5 L DIESEL
- E300 | 1995-1997 | Base | 6 Cyl 3.0 L DIESEL
View related parts
Mercedes-Benz Thermostat Housing
Part Number: 112-203-03-75
$31.72 MSRP: $43.50
You Save: $11.78 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat Element; Thermostat, Thermostat Housing
- Replaces: 112-200-01-15
Fits the following Mercedes-Benz Models:
- C32 AMG | 2002-2004 | Base | 6 Cyl 3.2 L GAS
- SLK32 AMG | 2002-2004 | Base | 6 Cyl 3.2 L GAS
View related parts
Mercedes-Benz Thermostat
Part Number: 602-200-00-15
$31.11 MSRP: $42.50
You Save: $11.39 (27%)
Ships in 1-2 Business Days
ADD TO CART
Fits the following Mercedes-Benz Models:
- 300D | 1990-1993 | 2.5 | 5 Cyl 2.5 L DIESEL
- 300SD | 1992-1993 | Base | 6 Cyl 3.4 L DIESEL
- E300 | 1998-1999 | Base | 6 Cyl 3.0 L DIESEL
- S350 | 1994-1995 | Base | 6 Cyl 3.4 L DIESEL
View More
View related parts
Mercedes-Benz Thermostat
Part Number: 111-200-09-15
$35.99 MSRP: $49.50
You Save: $13.51 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaces: 111-200-04-15, 111-200-09-15-05
Fits the following Mercedes-Benz Models:
- C220 | 1994-1996 | Base | 4 Cyl 2.2 L GAS
- C230 | 1997-2000 | Base, Kompressor | 4 Cyl 2.3 L GAS
- SLK230 | 1998-2004 | Kompressor | 4 Cyl 2.3 L GAS
View More
View related parts
Mercedes-Benz Thermostat
Part Number: 110-200-05-15
$36.00 MSRP: $50.00
You Save: $14.00 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaces: 002-203-37-75
Fits the following Mercedes-Benz Models:
- 190E | 1986-1993 | 2.3-16, 2.6 | 4 Cyl 2.3 L GAS, 6 Cyl 2.6 L GAS
- 300CE | 1988-1993 | Base | 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
- 300E | 1986-1993 | 2.6, 2.8, 4Matic, Base | 6 Cyl 2.6 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
- 300SE | 1988-1993 | Base | 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
- 300SEL | 1988-1991 | Base | 6 Cyl 3.0 L GAS
- 300SL | 1990-1993 | Base | 6 Cyl 3.0 L GAS
- 300TE | 1988-1993 | 4Matic, Base | 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
- C280 | 1994-1997 | Base | 6 Cyl 2.8 L GAS
- E320 | 1994-1997 | Base | 6 Cyl 3.2 L GAS
- S320 | 1994-1999 | LWB, SWB | 6 Cyl 3.2 L GAS
View More
View related parts
Mercedes-Benz Thermostat
Part Number: 111-200-17-15
$39.00 MSRP: $55.00
You Save: $16.00 (30%)
Ships in 1-2 Business Days
ADD TO CART
Fits the following Mercedes-Benz Models:
- C230 | 2002 | Kompressor | 4 Cyl 2.3 L GAS
View related parts
Mercedes-Benz Thermostat
Part Number: 642-200-20-15
$48.40 MSRP: $68.00
You Save: $19.60 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Coolant Thermostat
- Replaces: 642-200-02-15
Fits the following Mercedes-Benz Models:
- E350 | 2011-2013 | Bluetec | 6 Cyl 3.0 L DIESEL
- GL320 | 2007-2009 | Bluetec 4Matic, CDI | 6 Cyl 3.0 L DIESEL
- GL350 | 2010-2012 | Bluetec 4Matic | 6 Cyl 3.0 L DIESEL
- ML320 | 2007-2009 | Bluetec 4Matic, CDI | 6 Cyl 3.0 L DIESEL
- ML350 | 2010-2011 | Bluetec 4Matic | 6 Cyl 3.0 L DIESEL
- R320 | 2007-2009 | Bluetec, CDI | 6 Cyl 3.0 L DIESEL
- R350 | 2010-2012 | Bluetec 4Matic | 6 Cyl 3.0 L DIESEL
- Sprinter 2500 | 2010-2022 | Base | 6 Cyl 3.0 L DIESEL
- Sprinter 3500 | 2010-2022 | Base | 6 Cyl 3.0 L DIESEL
- Sprinter 3500XD | 2019-2022 | Base | 6 Cyl 3.0 L DIESEL
View More
View related parts
Mercedes-Benz Temperature Sensor
Part Number: 000-501-07-65
$57.60 MSRP: $80.00
You Save: $22.40 (28%)
ADD TO CART
Product Specifications
- Other Name: Thermostat; Temperature Sensor
Fits the following Mercedes-Benz Models:
- C63 AMG | 2010-2015 | Base, Black Series | 8 Cyl 6.3 L GAS
- CLS63 AMG | 2009-2014 | 4Matic, Base | 8 Cyl 5.5 L GAS, 8 Cyl 6.3 L GAS
- CLS63 AMG S | 2014-2018 | 4Matic | 8 Cyl 5.5 L GAS
- E350 | 2011-2013 | Bluetec | 6 Cyl 3.0 L DIESEL
- GLK250 | 2013-2015 | Bluetec 4Matic | 4 Cyl 2.1 L DIESEL
- Metris | 2016-2023 | Base | 4 Cyl 2.0 L GAS
- SLK55 AMG | 2012-2016 | Base | 8 Cyl 5.5 L GAS
View More
View related parts
Mercedes-Benz Thermostat
Part Number: 646-200-00-15
$48.00 MSRP: $67.00
You Save: $19.00 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaced by: 646-200-11-15
Fits the following Mercedes-Benz Models:
- E320 | 2005-2006 | CDI | 6 Cyl 3.2 L DIESEL
View related parts
Mercedes-Benz Thermostat Unit
Part Number: 260-200-29-00
$70.80 MSRP: $99.00
You Save: $28.20 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat; Thermostat Unit
- Replaces: 260-200-26-00, 260-200-09-00
Fits the following Mercedes-Benz Models:
- A220 | 2019-2022 | 4Matic, Base | 4 Cyl 2.0 L GAS
- A35 AMG | 2020-2021 | 4Matic | 4 Cyl 2.0 L GAS
- CLA250 | 2020-2023 | 4Matic, Base | 4 Cyl 2.0 L GAS
- CLA35 AMG | 2020-2023 | 4Matic | 4 Cyl 2.0 L GAS
- GLA250 | 2021-2023 | 4Matic, Base | 4 Cyl 2.0 L GAS
- GLA35 AMG | 2021-2023 | 4Matic | 4 Cyl 2.0 L GAS
- GLB250 | 2020-2023 | 4Matic, Base | 4 Cyl 2.0 L GAS
- GLB35 AMG | 2021-2023 | 4Matic | 4 Cyl 2.0 L GAS
View More
View related parts
Mercedes-Benz Thermostat Housing
Part Number: 113-203-02-75
$127.20 MSRP: $177.00
You Save: $49.80 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat Element; Thermostat, Thermostat Housing
- Replaces: 113-203-00-75
Fits the following Mercedes-Benz Models:
- CL55 AMG | 2001-2006 | Base | 8 Cyl 5.5 L GAS
- CLS500 | 2006 | Base | 8 Cyl 5.0 L GAS
- CLS55 AMG | 2006 | Base | 8 Cyl 5.5 L GAS
- E55 AMG | 2004-2006 | Base | 8 Cyl 5.5 L GAS
- G55 AMG | 2005-2011 | Base | 8 Cyl 5.5 L GAS
- S55 AMG | 2003-2006 | Base, Kompressor | 8 Cyl 5.5 L GAS
- SL55 AMG | 2007-2008 | Base | 8 Cyl 5.5 L GAS
View More
View related parts
Mercedes-Benz Thermostat Unit
Part Number: 272-200-04-15
$87.60 MSRP: $122.00
You Save: $34.40 (29%)
ADD TO CART
Product Specifications
- Other Name: Coolant Thermostat; Thermostat Unit
- Replaces: 272-200-01-15, 272-200-00-15
Fits the following Mercedes-Benz Models:
- C230 | 2006-2007 | Sport | 6 Cyl 2.5 L FLEX, 6 Cyl 2.5 L GAS
- C280 | 2006-2007 | 4Matic, Luxury | 6 Cyl 3.0 L GAS
- C300 | 2008-2012 | 4Matic Luxury, 4Matic Sport, Luxury, Sport | 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS
- C350 | 2006-2011 | 4Matic, Luxury, Sport | 6 Cyl 3.5 L GAS
- CLK350 | 2006-2009 | Base | 6 Cyl 3.5 L GAS
- E350 | 2006-2013 | 4Matic, Base | 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS
- E550 | 2010-2011 | 4Matic, Base | 8 Cyl 5.5 L GAS
- GLK350 | 2010-2012 | 4Matic, Base | 6 Cyl 3.5 L GAS
- ML350 | 2006-2011 | 4Matic, Base, Bluetec 4Matic | 6 Cyl 3.0 L DIESEL, 6 Cyl 3.5 L GAS
- ML450 | 2010-2011 | Hybrid 4Matic | 6 Cyl 3.5 L FULL HYBRID EV-GAS (FHEV)
View More
View related parts
Mercedes-Benz Thermostat
Part Number: 164-501-02-65
$91.20 MSRP: $127.00
You Save: $35.80 (29%)
ADD TO CART
Fits the following Mercedes-Benz Models:
- GL350 | 2013-2016 | Bluetec 4Matic | 6 Cyl 3.0 L DIESEL
- GL450 | 2013-2016 | 4Matic, Base | 6 Cyl 3.0 L GAS, 8 Cyl 4.7 L GAS
- GL550 | 2013-2016 | 4Matic | 8 Cyl 4.7 L GAS
- GL63 AMG | 2013-2016 | Base | 8 Cyl 5.5 L GAS
- GLE300d | 2016 | 4Matic | 4 Cyl 2.1 L DIESEL
- GLE350 | 2016-2018 | 4Matic, Base | 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS
- GLE400 | 2019, 2016-2017 | 4Matic | 6 Cyl 3.0 L GAS
- GLE43 AMG | 2017-2019 | 4Matic | 6 Cyl 3.0 L GAS
- GLE550e | 2016-2018 | 4Matic | 6 Cyl 3.0 L PLUG-IN HYBRID EV-GAS (PHEV)
- GLE63 AMG | 2016-2019 | 4Matic | 8 Cyl 5.5 L GAS
View More
View related parts
Mercedes-Benz Thermostat
Part Number: 651-200-32-00-64
$105.60 MSRP: $147.00
You Save: $41.40 (29%)
ADD TO CART
Product Specifications
- Replaces: 651-200-16-00, 651-200-18-15, 651-200-10-15, 651-200-32-00
Fits the following Mercedes-Benz Models:
- E250 | 2014-2016 | Bluetec, Bluetec 4Matic | 4 Cyl 2.1 L DIESEL
- GLE300d | 2016 | 4Matic | 4 Cyl 2.1 L DIESEL
- GLK250 | 2013-2015 | Bluetec 4Matic | 4 Cyl 2.1 L DIESEL
- ML250 | 2015 | Bluetec 4Matic | 4 Cyl 2.1 L DIESEL
- Sprinter 2500 | 2014-2017 | Base | 4 Cyl 2.1 L DIESEL
- Sprinter 3500 | 2014-2017 | Base | 4 Cyl 2.1 L DIESEL
View More
View related parts
Mercedes-Benz Thermostat
Part Number: 169-501-01-65
Fits the following Mercedes-Benz Models:
- CLS55 AMG | 2006 | Base | 8 Cyl 5.5 L GAS
- CLS550 | 2007-2011 | Base | 8 Cyl 5.5 L GAS
View related parts
Mercedes-Benz Thermostat
Part Number: 119-200-00-15
Fits the following Mercedes-Benz Models:
- 400E | 1992-1993 | Base | 8 Cyl 4.2 L GAS
- 400SE | 1992 | Base | 8 Cyl 4.2 L GAS
- 400SEL | 1993 | Base | 8 Cyl 4.2 L GAS
- 500E | 1992-1993 | Base | 8 Cyl 5.0 L GAS
- 500SEC | 1993 | Base | 8 Cyl 5.0 L GAS
- 500SEL | 1992-1993 | Base | 8 Cyl 5.0 L GAS
- CL500 | 1998-1999 | Base | 8 Cyl 5.0 L GAS
- E420 | 1997, 1994-1995 | Base | 8 Cyl 4.2 L GAS
- E500 | 1994 | Base | 8 Cyl 5.0 L GAS
- S420 | 1994-1999 | Base | 8 Cyl 4.2 L GAS
View More
View related parts
Mercedes-Benz Thermostat Housing
Part Number: 120-200-00-15
Product Specifications
- Other Name: Cooling Water Thermostat; Thermostat Housing
Fits the following Mercedes-Benz Models:
- 600SEC | 1993 | Base | 12 Cyl 6.0 L GAS
- 600SEL | 1992-1993 | Base | 12 Cyl 6.0 L GAS
- 600SL | 1993 | Base | 12 Cyl 6.0 L GAS
- CL600 | 1998-1999 | Base | 12 Cyl 6.0 L GAS
- S600 | 1994-1999 | Base | 12 Cyl 6.0 L GAS
- SL600 | 1994-2002 | Base | 12 Cyl 6.0 L GAS
View More

| Page 1 of 3 |Next >

1-20 of 53 Results

Mercedes-Benz Thermostat

Small in size, Mercedes-Benz thermostats are located between the engine and the radiator. Closed during warmup of the engine, if the thermostat fails, it can cause overheating of your vehicle, with expensive damages liable to occur thereafter. Therefore, for people owning vehicles, there is a need for them to regularly check, repair or replace thermostats.

Why go for OEM Mercedes-Benz Thermostats? Because they are the optimal solutions, fit your vehicle perfectly, and are easy to install. Therefore, these factors help maintain the dependability and performance of your vehicle. At MBPartsGiant.com, you may find all the required genuine parts for your Mercedes-Benz. They are delivered from authorized Mercedes-Benz dealers directly via an uncomplicated online catalog. We guarantee promptness, reliability, and cheap sales on the Mercedes-Benz Thermostat, and we always provide you with the right part at any time. Depend on our genuine Mercedes-Benz Thermostats to keep your vehicle running smoothly.

Mercedes-Benz Thermostat Parts and Q&A

Thermostat
110-200-05-15
Q: How to remove, test, and refit a thermostat on Mercedes-Benz 190E?
A:
The thermostat is located in a housing bolted to the side of the coolant pump. Begin by disconnecting the battery negative cable and draining the cooling system. Detach the coolant hose from the thermostat cover by slackening the clip. Unscrew the securing bolts to remove the thermostat cover; if it is stuck, gently tap or rock it to free it without levering between the mating faces. Recover the seal and lift the thermostat from its housing, noting its orientation. To test the thermostat, suspend it in a container of water and heat the water to boiling; it should open by that point. For precise testing, use a thermometer to check the opening temperature against the specifications marked on the thermostat. A thermostat that fails to close completely as the water cools is also faulty. For refitting, clean the mating faces of the cover and housing, then place the thermostat back in, ensuring the spring-loaded side faces into the housing. On diesel models, align the thermostat rim's recess with the rib on the housing cover, while on petrol models, position the thermostat so the air bleed valve is at the highest point. Lay a new seal in position on the housing, fit the cover, and secure it with bolts tightened to the specified torque. Reconnect the coolant hose and refill the cooling system.
Thermostat Housing
111-200-16-15
Q: What should you check before assuming the thermostat is responsible for a cooling system problem on Mercedes-Benz C230?
A:
Probably everyone knows by the time they reach adulthood that, before assuming something is wrong in a cooling system, the first step is to look at the amount of coolant in the system, the tightness of its drive-belt, or the operation of its temperature gauge or temperature light. When it takes a long time before the engine warms up, it is possible that the thermostat has become stuck open, and should be changed. When the engine is too hot to run, or overheats, the thermostat should also be extensively tested, which in turn cannot be done unless the thermostat is out of the car. When the thermostat will not close at room temperature, it is not functioning properly, and needs to be replaced; the interim economy and the emissions of driving cars and trucks without the thermostat can be detrimental. To test a thermostat, place it in a container of cold water together with a thermometer, warm the water and record the temperature at which the thermostat starts to open and when it is completely open and compare this to the specs. In case the thermostat is not opening and closing as per specifications or becomes stuck in any position it needs replacement. To replace: drain the engine coolant, take out the trim panel and coolant hose(s) in the cover of the thermostat housing, and unbolt the housing cover. Wipe down the surfaces, replace an O-ring, and reassemble everything in reverse, also refilling and bleeding the cooling system and inspecting for leaks and correct functionality. Other procedures to be followed correspond to the type of engine to be installed; e.g., before installation, hoses must be removed, all old gaskets and sealants cleaned and serpentine belt must be removed.