BMW Thermostats for BMW Z3 (1996-2002)

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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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Thermostat Replacement Kit - E39 E46 E60 E53 Z3 Z4 With M54, M52TU Engine
Thermostat Replacement Kit - E39 E46 E60 E53 Z3 Z4 With M54, M52TU En...
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:554073
Part#: 11537509227KT3
Ships on Feb 25, 2027
$ 103.99 USD
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$ 103.99 USD
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When it comes time to replace your thermostat, be sure you have everything you need. This kit includes everything you need to replace your thermostat, including the thermostat.

Kit includes:

  • Mahle-Behr thermostat with gasket
  • Thermostat mounting hardware
  • 1 liter of coolant

Applications:
1999-2003 E39 528i, 525i, 530i sedan, touring wagon (M52TU engine, M54 engine)
1999-2005 E46 323, 328, 325, 330 sedan, coupe, cabrio, touring wagon (M52TU engine, M54 engine)
2004-2005 E60 525i, 530i sedan, touring wagon (M54 engine)
2001-2006 E53 X5 3.0 (M54 engine)
2004-2006 E83 X3 2.5i X3 3.0i (M54 engine)
1999-2002 Z3 2.3. Z3 2.5i, 2.8 Z3 3.0i (M54 engine)
2003-2005 Z4 2.5i, Z4 3.0 (M54 engine)

 

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Aluminum Thermostat Housing - E34, E36, Z3
Aluminum Thermostat Housing - E34, E36, Z3
Up to production date 09/1998
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:579865
Part#: 54402
In Stock
Sale - Save 22% $ 25.99

This product was last offered at the strikethrough price on
05-03-2026

$ 20.39 USD
Free Shipping on orders $49 and up
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Sale - Save 22%
$ 25.99

This product was last offered at the strikethrough price on
05-03-2026

$ 20.39 USD
Free Shipping on orders $49 and up
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The plastic thermostat cover in your BMW is a known point of failure. Throughout the years of repeated contact with hot coolant, the plastic can crack and cause massive coolant leaks and potential overheating.
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OEM Wahler Thermostat With Housing - E46 E53 E60 E83 M54
OEM Wahler Thermostat With Housing - E46 E53 E60 E83 M54
For vehicles with production date from 09/1998
Wahler - Corporate Logo
T#:341054
Part#: 11537509227
In Stock
$ 71.99 USD
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$ 71.99 USD
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Stop leaks before they start with this new Thermostat With Housing from Wahler. Despite the fact that most BMW models are brilliant, most have common issues that can plague you during your ownership of the car. This part is one of those issues, as they are known to crack over time. This replacement part is perfect stop a crack and possibly a leak before it starts.
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OEM Wahler 80 Degree Thermostat - E46 M3, MZ3 S54, Z4 M
OEM Wahler 80 Degree Thermostat - E46 M3, MZ3 S54, Z4 M
Wahler - Corporate Logo
T#:360524
Part#: 11531318274
In Stock
$ 105.99

This product was last offered at the strikethrough price on
06-25-2026

$ 70.99 USD
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$ 70.99 USD
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Replacement 80* Celcius 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.
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Thermostat With Housing
Thermostat With Housing
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:26494584
Part#: 11537509227
In Stock
Sale - Save 16% $ 60.99

This product was last offered at the strikethrough price on
05-03-2026

$ 50.99 USD
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Sale - Save 16%
$ 60.99

This product was last offered at the strikethrough price on
05-03-2026

$ 50.99 USD
Free Shipping on orders $49 and up
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Wahler Thermostat - 88�C - E30, E34, E36, Z3
Wahler Thermostat - 88�C - E30, E34, E36, Z3
Wahler - Corporate Logo
T#:369466
Part#: 11537511580
In Stock
$ 52.99

This product was last offered at the strikethrough price on
06-19-2026

$ 51.99 USD
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$ 51.99 USD
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Common point of failure in the cooling system.
Wahler Performance Thermostat - 75*C - M42, M50, M52, S50, S52
Wahler Performance Thermostat - 75*C - M42, M50, M52, S50, S52 ...
Wahler - Corporate Logo
T#:54388511
Part#: 11537511580
Ships in 1 Business Day
New Item
$ 59.99 USD
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$ 59.99 USD
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75°C variant is specifically calibrated for track racing, forced-induction builds, or hot-climate competitive environments
Wahler Thermostat O-Ring - E46, Z3, Z4
Wahler Thermostat O-Ring - E46, Z3, Z4
Wahler - Corporate Logo
T#:362366
Part#: 11531318402
In Stock
$ 6.17 USD
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$ 6.17 USD
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BMW does not include a o-ring with their new thermostats
Thermostat - 80°C
Thermostat - 80°C
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:57507417
Part#: 11531318274
Ships on Jan 6, 2027
New Item
$ 59.99 USD
Add to Wish List
$ 59.99 USD
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