Genuine BMW BMW Thermostats for BMW 3 Series E46 (1999-2005)

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BMW thermostats are known to fail, but luckily they typically fail wide open - meaning that your car can still cool. We offer thermostats from various OE suppliers we trust along with upgraded motorsport specific thermostats where applicable to make sure your BMW stays cool on track.

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Genuine BMW Thermostat With Housing - M52 M54

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T#:360689

Part#: 11537509227

In Stock

3% off MSRP $ 174.45

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 169.69 USD

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3% off MSRP

$ 174.45

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 169.69 USD

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Genuine BMW Thermostat - 80*C - E46 M3, MZ3 S54, Z4 M

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T#:12502

Part#: 11531318274

In Stock

16% off MSRP $ 147.44

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 123.15 USD

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16% off MSRP

$ 147.44

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 123.15 USD

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GENUINE BMW THERMOSTAT - E46 M3, MZ3 (S54), MZ4. This is just the thermostat itself and does not include the housing o-ring or any others that are advised for replacement. See thermostat kit or our water pump kit for a complete package.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

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Genuine BMW Automatic Transmission Thermostat

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T#:348485

Part#: 17111437362

Ships in 1 day

4% off MSRP $ 134.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 130.00 USD

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4% off MSRP

$ 134.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 130.00 USD

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Ensure optimal performance and temperature regulation in your BMW's automatic transmission with the Turner Motorsport Genuine Automatic Transmission Thermostat, part number 17111437362. This thermostat serves as a crucial component of the heat exchanger system, maintaining proper fluid temperatures for smooth transmission operation. Typically replaced during expansion tank maintenance, this Genuine BMW part guarantees reliability and compatibility with your vehicle.

Key Benefits:

Genuine BMW quality assurance
Maintains proper transmission fluid temperatures
Ensures smooth transmission operation
Direct replacement for OEM thermostat
Compatible with expansion tank replacement

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Thermostat With O-Rings - E46 M3, MZ3, Z4 M

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T#:2303

Part#: 11531318274-K

In Stock

$ 148.76 USD

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$ 148.76 USD

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Replacement stock thermostat for E46 M3, Z3M w S54 engine, Z4M.The thermostat can be replaced on the E46 M3 without removing the water pump. This can save you money if the pump still has life left on it but the thermostat needs to be done now. Symptoms of a bad thermostat include an erratic temp gauge and a fault code. When replacing the thermostat, there are three o-rings that will likely need to be replaced between the thermostat and the water pump housing, and two on the coolant tube going to the head. We also recommend new hoses, clamps, and BMW coolant. Replacement should take about one hour.

Note: even though this can be done without replacing the water pump, the job involves removing the same items to access this area. And opening the thermostat housing will spill a lot of coolant. In other words, if you don't replace the water pump at the same time, you're going to repeat this process when the pump needs replacing. We offer a complete water pump overhaul package that covers everything you need if you want to it all at once. You can the thermostat to that package and get everything without any duplicate parts. Click here for the E46 M3 water pump kit.

On S54 engines (E46 M3, MZ3, Z4 M) there is a flanged head bolt going into the cylinder head, behind the thermostat cover. This holds the left side timing chain guide rail in place and if it's loose or falls out you could have a very serious engine failure to deal with. Make sure to check this bolt while you have the thermostat cover off. You only need to make sure it's tight. But if it's come loose you may want to replace the seal ring and use a small touch of oil-resistant thread sealer.

This item fits the following BMWs:
2000-2001 E46 3 Series M3 M3 Convertible 2000-2006
2001-2002 Z3 Roadster / Coupe Z3 M Roadster Z3 M Coupe w S54 Engine
2006-2008 E86 E86 Z4 Z4 M Roadster Z4 M Coupe

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Thermostat Housing Gasket

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T#:367704

Part#: 11537509357

Ships in 1 day

14% off MSRP $ 9.74

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 8.33 USD

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14% off MSRP

$ 9.74

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 8.33 USD

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Needs to be replaced once removed

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Genuine BMW BMW Thermostats for BMW 3 Series E46 (1999-2005)

Genuine BMW Thermostat With Housing - M52 M54

Genuine BMW Thermostat - 80*C - E46 M3, MZ3 S54, Z4 M

Genuine BMW Automatic Transmission Thermostat

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Thermostat With O-Rings - E46 M3, MZ3, Z4 M

Thermostat Housing Gasket

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