BMW Thermostat Assembly - Mahle Behr 11537509227
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A common cause of cooling system performance issues

This thermostat assembly is a common wear item and usually a culprit for all sorts of issues with the cooling system. Thermostats typically fail in one of two ways. The most common failure occurs when the thermostat gets stuck in the open position. This allows coolant to continually pass through the engine preventing it from reaching operating temperature. Engines that don't run cool like this will usually receive poor gas mileage. Another failure is when the thermostat gets stuck in the closed position. This will cause your engine to constantly overheat which can damage the engine. This thermostat comes with the gasket for an easy installation.

Includes thermostat gasket, p/n 11537509357

Fits These Cars:

2000 BMW 323Ci Thermostat Assembly
1999 BMW 323i Thermostat Assembly
Mfr body code: E46
2000 BMW 323i Thermostat Assembly
2001 BMW 325Ci Thermostat Assembly
2002 BMW 325Ci Thermostat Assembly
2003 BMW 325Ci Thermostat Assembly
2004 BMW 325Ci Thermostat Assembly
2005 BMW 325Ci Thermostat Assembly
2006 BMW 325Ci Thermostat Assembly
2001 BMW 325i Thermostat Assembly
2002 BMW 325i Thermostat Assembly
2003 BMW 325i Thermostat Assembly
2004 BMW 325i Thermostat Assembly
2005 BMW 325i Thermostat Assembly
2001 BMW 325xi Thermostat Assembly
2002 BMW 325xi Thermostat Assembly
2003 BMW 325xi Thermostat Assembly
2004 BMW 325xi Thermostat Assembly
2005 BMW 325xi Thermostat Assembly
2000 BMW 328Ci Thermostat Assembly
1999 BMW 328i Thermostat Assembly
Mfr body code: E46
2000 BMW 328i Thermostat Assembly
2001 BMW 330Ci Thermostat Assembly
2002 BMW 330Ci Thermostat Assembly
2003 BMW 330Ci Thermostat Assembly
2004 BMW 330Ci Thermostat Assembly
2005 BMW 330Ci Thermostat Assembly
2006 BMW 330Ci Thermostat Assembly
2001 BMW 330i Thermostat Assembly
2002 BMW 330i Thermostat Assembly
2003 BMW 330i Thermostat Assembly
2004 BMW 330i Thermostat Assembly
2005 BMW 330i Thermostat Assembly
2001 BMW 330xi Thermostat Assembly
2002 BMW 330xi Thermostat Assembly
2003 BMW 330xi Thermostat Assembly
2004 BMW 330xi Thermostat Assembly
2005 BMW 330xi Thermostat Assembly
2001 BMW 525i Thermostat Assembly
2002 BMW 525i Thermostat Assembly
2003 BMW 525i Thermostat Assembly
2004 BMW 525i Thermostat Assembly
2005 BMW 525i Thermostat Assembly
1999 BMW 528i Thermostat Assembly
2000 BMW 528i Thermostat Assembly
2001 BMW 530i Thermostat Assembly
2002 BMW 530i Thermostat Assembly
2003 BMW 530i Thermostat Assembly
2004 BMW 530i Thermostat Assembly
2005 BMW 530i Thermostat Assembly
2001 BMW X5 Thermostat Assembly
Sub model: 3.0i
2002 BMW X5 Thermostat Assembly
Sub model: 3.0i
2003 BMW X5 Thermostat Assembly
Sub model: 3.0i
2004 BMW X5 Thermostat Assembly
Sub model: 3.0i
2005 BMW X5 Thermostat Assembly
Sub model: 3.0i
2006 BMW X5 Thermostat Assembly
Sub model: 3.0i
1998 BMW Z3 Thermostat Assembly
Engine base: 2.8L L6, Sub model: Roadster
From 9/1998
1999 BMW Z3 Thermostat Assembly
Engine base: 2.8L L6, Sub model: Coupe
1999 BMW Z3 Thermostat Assembly
Engine base: 2.5L L6, Sub model: Roadster
1999 BMW Z3 Thermostat Assembly
Engine base: 2.8L L6, Sub model: Roadster
2000 BMW Z3 Thermostat Assembly
Engine base: 2.8L L6, Sub model: Coupe
2000 BMW Z3 Thermostat Assembly
Engine base: 2.5L L6, Sub model: Roadster
2000 BMW Z3 Thermostat Assembly
Engine base: 2.8L L6, Sub model: Roadster
2001 BMW Z3 Thermostat Assembly
Engine base: 3.0L L6, Sub model: Coupe
2001 BMW Z3 Thermostat Assembly
Engine base: 2.5L L6, Sub model: Roadster
2001 BMW Z3 Thermostat Assembly
Engine base: 3.0L L6, Sub model: Roadster
2002 BMW Z3 Thermostat Assembly
Engine base: 3.0L L6, Sub model: Coupe
2002 BMW Z3 Thermostat Assembly
Engine base: 2.5L L6, Sub model: Roadster
2002 BMW Z3 Thermostat Assembly
Engine base: 3.0L L6, Sub model: Roadster
2003 BMW Z4 Thermostat Assembly
2004 BMW Z4 Thermostat Assembly
2005 BMW Z4 Thermostat Assembly
2004 BMW X3 Thermostat Assembly
2005 BMW X3 Thermostat Assembly
2006 BMW X3 Thermostat Assembly
Product match fitment

BMW Thermostat Assembly - Mahle Behr 11537509227

Brand:
Mahle logoMahle
SKU #:
MAH-TM1397
Part:
Thermostat Assembly
OE Numbers:
11537509227, 11530139877, 11531436823, 11531437040
FCP ID:
146466
$58.99 MSRP: $71.99
Make sure this part fits.
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Customer Reviews

Write a Review Average rating:
4.7 based on 6 review(s)
By: Mike
Fri, May 13 at 9:31PM
Bmw Rookie Builder

Bought this for my 325i ....all good

By: Ridge
Thu, Mar 17 at 1:24AM

Received my item and it was damaged during shipping. I told FCP and they next day air-mailed me a replacement because they knew I needed it fast for my cooling system overhaul. Fantastic customer service and I am a lifetime customer. Absolutely brilliant company.

By: Derek Po
Tue, Mar 1 at 7:42PM

Great fit, quality and cost.. easy out and back in.... great product

By: MillerTimeBMW
Tue, Dec 29 at 1:26PM
The Best Quality At This Price And A Lifetime Warranty.

It's a no brainer. This is the best price you'll find online and then ADD the lifetime warranty. What else do you need?

By: Alec
Tue, Sep 15 at 1:30AM

Used this unit to replace the stock Wahler unit it and it is visibly different in multiple areas, the Behr unit has a retaining ring to hold the electrical sensor into place unlike the Wahler and there are more structural ribs on the Behr unit than the Wahler, looks to be a quality replacement. OEM fit.

By: Bowman
Sat, Dec 28 at 3:13PM

works great no problems since instalation

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