How to remove and install the Thermostat on BMW 325i?

Remove the fasteners and the engine splash shield. Drain the cooling system. Release the clamps/pry out the clips and disconnect the four coolant hoses from the thermostat housing, which is located above the coolant pump at the front right-hand corner of the cylinder block. Disconnect the electrical connector from the base of the thermostat housing. Remove the mounting bolts and the thermostat housing. Note: The thermostat and housing are only available as a complete unit. Installation is the reverse of removal, bearing in mind the following points. Replace the thermostat cover/housing O-ring seal. Tighten the thermostat cover/housing bolts to the specified torque where given. Refill the cooling system.

Genuine BMW 325i Thermostat

Engine Coolant Thermostat

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10 Thermostats found

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BMW 325i Thermostat
Part Number: 11537549476
$216.45 MSRP: $316.79
You Save: $100.34 (32%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Thermostat Housing, Thermostat Unit
- Replaces: 11-53-7-544-788, 11-53-7-536-655
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2006 BMW 325i | Sedan(E90)
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BMW 325i Thermostat Housing Sensor
Part Number: 11537509227
$123.30 MSRP: $174.45
You Save: $51.15 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Thermostat Housing With Thermostat
- Replaces: 11-53-0-139-877
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2001-2005 BMW 325i | Sedan M54 Engine(E46), Sedan M56 Engine(E46), Sedan(E46), Wagon M54 Engine(E46), Wagon M56 Engine(E46), Wagon(E46)
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BMW 325i Engine Coolant Thermostat
Part Number: 11531710953
$49.17 MSRP: $59.37
You Save: $10.20 (18%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat
- Replaces: 11-53-1-466-174, 11-53-1-713-040
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1987-1992 BMW 325i | Convertible(E30), Coupe(E30), Sedan(E30)
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BMW 325i Oil Cooler Thermostat
Part Number: 17111437362
$107.87 MSRP: $134.39
You Save: $26.52 (20%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Thermostat; Temperature Switch
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2001-2005 BMW 325i | Sedan M54 Engine(E46), Sedan M56 Engine(E46), Sedan(E46), Wagon M54 Engine(E46), Wagon M56 Engine(E46), Wagon(E46)
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BMW 325i Engine Coolant Thermostat
Part Number: 11531265085
$49.17 MSRP: $59.37
You Save: $10.20 (18%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat
- Replaces: 11-53-1-466-173
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1987-1992 BMW 325i | Convertible(E30), Coupe(E30), Sedan(E30)
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BMW 325i Behr Thermot-Tronik Thermostat
Part Number: 11537511580
$49.17 MSRP: $59.37
You Save: $10.20 (18%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Thermostat
- Replaces: 11-53-1-721-002
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1992-1995 BMW 325i | Convertible(E36), Sedan(E36)
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BMW 325i Thermostat
Part Number: 13541730682
$89.11 MSRP: $103.31
You Save: $14.20 (14%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1992-1995 BMW 325i | Convertible(E36), Sedan(E36)
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BMW 325i Thermostat
Part Number: 11537511083
$87.74 MSRP: $107.71
You Save: $19.97 (19%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Thermostat Housing
- Replaces: 11-53-1-712-043, 11-53-1-468-057, 11-53-1-733-803
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1992-1995 BMW 325i | Convertible(E36), Sedan(E36)
View related parts
BMW 325i Engine Coolant Thermostat
Part Number: 11531713040
$49.17 MSRP: $59.37
You Save: $10.20 (18%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat
- Replaced by: 11531710953
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1987-1992 BMW 325i | Convertible(E30), Coupe(E30), Sedan(E30)
View related parts
BMW 325i Thermostat
Part Number: 11531466174
$49.17 MSRP: $59.37
You Save: $10.20 (18%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 11531710953
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1987-1992 BMW 325i | Convertible(E30), Coupe(E30), Sedan(E30)

BMW 325i Thermostat

The BMW 325i Thermostat manages the engine's temperature in the healthy middle zone to avoid power loss and expensive engine damage. The device is located next to the radiator. It remains in a closed position while the coolant is being warmed within the inner loop. However, once the heat touches the set point of the Thermostat, it pops open. This allows the coolant from the outer loop to sweep through. Furthermore, it carries excess heat away from the device. The BMW 325i was fitted with an uncomplicated and tried-and-true wax-pellet mechanical Thermostat that expands on heating for the early models. Subsequent generations of the vehicle 325i incorporated a Thermostat that is digitally controlled and still uses a wax core. Moreover, it incorporates an electronic heater that can customize the speed at which it opens. Therefore, it offers the BMW driver a quicker warming-up process along with tighter emissions control. Both achieve the same objective, although the latter responds more quickly upon hard acceleration or cold start. The role of the Thermostat is important for any BMW fan, as the 325i motor can overheat within minutes if it sticks closed. Although the technology was updated, the principle is nevertheless the same: flow control with a safety valve and the ever-vigilant Thermostat.

If you are looking for OEM BMW 325i Thermostat, we highly recommend to shop with us. Not only do we offer budget friendly prices, but we also provide fast delivery. In addition, we have a hassle-free return policy on all genuine BMW 325i Thermostat that come backed by the manufacturer's warranty.

BMW 325i Thermostat Parts Questions & Experts Answers

Thermostat
11537549476
Q:
How to remove and install the Thermostat on BMW 325i?
Posted by Britta T.
A:
Remove the fasteners and the engine splash shield. Drain the cooling system. Release the clamps/pry out the clips and disconnect the four coolant hoses from the thermostat housing, which is located above the coolant pump at the front right-hand corner of the cylinder block. Disconnect the electrical connector from the base of the thermostat housing. Remove the mounting bolts and the thermostat housing. Note: The thermostat and housing are only available as a complete unit. Installation is the reverse of removal, bearing in mind the following points. Replace the thermostat cover/housing O-ring seal. Tighten the thermostat cover/housing bolts to the specified torque where given. Refill the cooling system.
Answered by BMW Parts Specialist Adrian / Apr 25, 2025