Mahle-Behr BMW Cooling System Parts & Accessories for BMW X Series E53 (2000-2006)

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The cooling system is arguably the weakest point in numerous BMWs. If you drive an aging BMW or plan on taking your car to the track like we do, we recommend beefing up your cooling system before going to the track. Generally, the main components in your cooling system that are prone to failure include the following: expansion tank, factory hoses, water pump, thermostat, fan (especially if your vehicle comes factory with a clutch fan), and radiator. Factory BMW expansion tanks are plastic and prone to either breaking off at connection points or combusting. As factory rubber hoses age they either crack or break over time - we offer silicone cooling hose upgrades for most applications to avoid future failures. If you have an older vehicle, your water pump likely comes from the factory with a plastic impeller - we offer upgraded water pumps with metal impellers that are far more reliable. Newer model BMWs utilize electric water pumps - BMW spent millions of dollars engineering these water pumps, but they fail so often that we recommend replacing at 60,000 mile service intervals to avoid being stranded on the side of the road. In terms of thermostats, we offer various upgraded thermostats for racing applications. If your BMW utilizes a clutch fan from the factory, we have several options available in terms of universal electric fans - we recommend replacing these to avoid sending brittle plastic fan blades through your hood. For radiators, we recommend swapping out your radiator for one that does not use plastic connection points like your factory radiator.

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Fan Clutch - E36 E46 E39 E34 X5 & other 6 Cylinders
Fan Clutch - E36 E46 E39 E34 X5 & other 6 Cylinders
Mahle-Behr - Corporate Logo
T#:340539
Part#: 11527505302
Ships in 1 Business Day
$ 238.99

This product was last offered at the strikethrough price on
08-26-2026

$ 230.99 USD
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$ 230.99 USD
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This clutch engages the belt-driven engine fan when the engine is warm/hot, and dis-engages the fan when cold/cool. These commonly fail, causing the engine fan to not spin fast enough (or at all) when your car is stopped in traffic, causing engine to overheat.

This fan clutch fits many 6 cylinder BMWs, including the following::

1992-1998  E36 BMW  323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1999-2005  E46 BMW  323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi - Automatic Transmission
1991-1995  E34 BMW  525i 535i M5
1997-2003  E39 BMW  525i 528i 530i
1988-1994  E32 BMW  735i 735il
1997-2002  Z3 BMW  Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
1998-2000  Z3 BMW  M Roadster M Coupe (s52)
2000-2006  E53 BMW  X5 3.0i
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OEM Mahle-Behr Thermostat - E39 E46 E60 E53 Z3 Z4 with M54, M52TU engine
OEM Mahle-Behr Thermostat - E39 E46 E60 E53 Z3 Z4 with M54, M52TU eng...
Mahle-Behr - Corporate Logo
T#:341098
Part#: 11537509227
Ships in 1 Business Day
$ 104.39

This product was last offered at the strikethrough price on
08-14-2026

$ 104.28 USD
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$ 104.28 USD
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Replacement stock MAP thermostat with plastic housing and gasket for E46, E39, E60, X5, Z4 - M54 engine, M52TU engine. Your car may still operate fine according the instrument display but the electrically-operated thermostat may be going bad. This new thermostat includes the thermostat gasket, ready to install in your BMW.

Hailing from Stuttgart, Mahle-Behr specializes in automotive cooling systems. From air conditioning to engine cooling M-B has you covered with OE-quality replacement parts.

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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Thermostat M62tu - E39 540i E38 740i 1999-2003
Thermostat M62tu - E39 540i E38 740i 1999-2003
Mahle-Behr - Corporate Logo
T#:341080
Part#: 11531436386
In Stock
$ 173.99 USD
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$ 173.99 USD
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Don't take chances! Proper maintenance is required to keep your BMW performing at peak levels. The thermostat basically controls when your car will overheat. The sensor on the housing is also used by the engine computer to set the fuel mapping on the engine. A faulty sensor or thermostat will lead to the engine running rich (too much fuel). This thermostat fits BMW E39 540i 99-03 E38 740i 99-01 X5 4.4i 4.6is 99-2003 with M62 engine.

Hailing from Stuttgart, Mahle-Behr specializes in automotive cooling systems. From air conditioning to engine cooling M-B has you covered with OE-quality replacement parts.

This item fits the following BMWs:
1999-2001  E38 BMW  740i 740il
1999-2003  E39 BMW  540i
1999-2003  E53 BMW  X5 4.4i X5 4.6is
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OEM Mahle-Behr Fan Clutch - E65 745i 760i, E53 X5 4.4i 4.6is
OEM Mahle-Behr Fan Clutch - E65 745i 760i, E53 X5 4.4i 4.6is ...
Mahle-Behr - Corporate Logo
T#:371683
Part#: 17417505109
Ships in 1 Business Day
$ 247.81

This product was last offered at the strikethrough price on
08-26-2026

$ 223.92 USD
Free Shipping
Add to Wish List
$ 223.92 USD
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Add to Wish List
This clutch engages the belt-driven engine fan when the engine is warm/hot, and dis-engages the fan when cold/cool. These commonly fail, causing the engine fan to not spin fast enough (or at all) when your car is stopped in traffic, causing engine to overheat.

This item fits the following BMWs:
2002-2006  E65 BMW  745i 745li 760i 760li
2000-2003  E53 BMW  X5 4.4i X5 4.6is
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