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BMW E46 Engine Thermostat Parts

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Thermostat With Aluminum Housing - M52TU M54

ES#4487719 - 11531437040 - Thermostat With Aluminum Housing - M52TU M54 - Aluminum construction for improved durability over stock design! Includes an integrated thermostat and rubber seal - Bavarian Autosport - BMW
ECS Tuning recommends this product.

Aluminum construction for improved durability over stock design! Includes an integrated thermostat and rubber seal 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bavarian Autosport - Corporate Logo
ES#:
4487719
Mfg#:
11531437040
In Stock
ON SALE! SAVE 19%
$104.99

This product was last offered at the strikethrough price on
05-02-2026

$84.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat With Housing

ES#10944 - 11537509227 - Thermostat With Housing - A common item to crack causing leaks - Wahler - BMW
ECS Tuning recommends this product.

A common item to crack causing leaks

Brand:
Wahler - Corporate Logo
ES#:
10944
Mfg#:
11537509227
In Stock
$69.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Assembly With Aluminum Housing

ES#4877251 - 11537509227PRM - Thermostat Assembly With Aluminum Housing - Aluminum Housing vs OEM Plastic - includes Thermostat & Gasket - URO Premium - BMW

Aluminum Housing vs OEM Plastic - includes Thermostat & Gasket 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO Premium - Corporate Logo
ES#:
4877251
Mfg#:
11537509227PRM
In Stock
$89.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 80°C

ES#10939 - 11531318274 - Thermostat - 80C - Restore your cooling performance with a brand new thermostat - Wahler - BMW

Restore your cooling performance with a brand new thermostat

Brand:
Wahler - Corporate Logo
ES#:
10939
Mfg#:
11531318274
In Stock
$105.99

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

$68.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat With Housing

ES#25078 - 11537509227 - Thermostat With Housing - A common item to crack causing leaks - Genuine BMW - BMW

A common item to crack causing leaks

Brand:
Genuine BMW - Corporate Logo
ES#:
25078
Mfg#:
11537509227
In Stock
3% off MSRP

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

$174.45

This product was last offered at the strikethrough price on
07-20-2026

$169.69 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Racing Thermostat

ES#2804271 - MMTS-E90-07 - Racing Thermostat - Promotes greater cooling for increased engine performance - Mishimoto - BMW

Promotes greater cooling for increased engine performance

Brand:
Mishimoto - Corporate Logo
ES#:
2804271
Mfg#:
MMTS-E90-07
In Stock
$83.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat With Housing

ES#4759911 - 11537509227 - Thermostat With Housing - A common item to crack causing leaks - Bremmen Parts - BMW

A common item to crack causing leaks 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4759911
Mfg#:
11537509227
In Stock
ON SALE! SAVE 18%
$60.99

This product was last offered at the strikethrough price on
05-02-2026

$49.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

M52TU/M54 Mechanical Thermostat Conversion

ES#4709399 - 008785LA01T - M52TU/M54 Mechanical Thermostat Conversion - Upgrade from your all-in-one plastic thermostat assembly to a stout and reliable billet mechanical thermostat setup! - Turner Motorsport - BMW

Upgrade from your all-in-one plastic thermostat assembly to a stout and reliable billet mechanical thermostat setup! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Turner Motorsport - Corporate Logo
ES#:
4709399
Mfg#:
008785LA01T
Ships on Oct 1, 2026
ON SALE!
Starting at $312.37 USD
Customize
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat With Housing

ES#259571 - 11537509227 - Thermostat With Housing - A common item to crack causing leaks - Mahle-Behr - BMW

A common item to crack causing leaks

Brand:
Mahle-Behr - Corporate Logo
ES#:
259571
Mfg#:
11537509227
Ships in 1 Business Day
$103.81 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

AAF Low Temp Thermostat Kit - Full Kit - E46

ES#4504845 - 116211 - AAF Low Temp Thermostat Kit - Full Kit - E46 - Keep your track car at the right temperature! - Advanced Auto Fabrication - BMW

Keep your track car at the right temperature!

Brand:
Advanced Auto Fabrication - Corporate Logo
ES#:
4504845
Mfg#:
116211
In Stock at Vendor
$175.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

AAF Low Temp Thermostat Kit - Partial - E46

ES#4504846 - 116211.2 - AAF Low Temp Thermostat Kit - Partial - E46 - Keep your track car at the right temperature! - Advanced Auto Fabrication - BMW

Keep your track car at the right temperature!

Brand:
Advanced Auto Fabrication - Corporate Logo
ES#:
4504846
Mfg#:
116211.2
Ships in 1 Business Day
$85.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 80*C

ES#24765 - 11531318274 - Thermostat - 80*C - Does not include gasket - Genuine BMW - BMW

Does not include gasket

Brand:
Genuine BMW - Corporate Logo
ES#:
24765
Mfg#:
11531318274
In Stock
16% off MSRP

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

$147.44

This product was last offered at the strikethrough price on
07-20-2026

$123.15 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Assembly

ES#4810957 - 11537509227 - Thermostat Assembly - Commonly cracked or broken - Includes Thermostat, Sensor, & Gasket - URO - BMW

Commonly cracked or broken - Includes Thermostat, Sensor, & Gasket 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4810957
Mfg#:
11537509227
Back Ordered
Auto Notify
$41.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Replacement Kit

ES#2602973 - 11537831103KT - Thermostat Replacement Kit - Includes thermostat, o-ring, and coolant - Genuine BMW - BMW

Includes thermostat, o-ring, and coolant

Brand:
Genuine BMW - Corporate Logo
ES#:
2602973
Mfg#:
11537831103KT
Ships in 2 Business Days
$165.99

This product was last offered at the strikethrough price on
06-03-2026

$163.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Thermostat W/ Housing & Sensor

ES#5435334 - MMTS-E46-99E - Thermostat W/ Housing & Sensor - Designed to restore original cooling performance, making it an essential component for routine maintenance or emergency repair. - Mishimoto - BMW

Designed to restore original cooling performance, making it an essential component for routine maintenance or emergency repair.

Brand:
Mishimoto - Corporate Logo
ES#:
5435334
Mfg#:
MMTS-E46-99E
Ships in 1-3 days
$91.99 USD
Free Shipping
on orders $49 and up

Thermostat - 92C

ES#2895484 - 11537511083 - Thermostat - 92C - Includes gasket - Vemo - BMW

Includes gasket

Brand:
Vemo - Corporate Logo
ES#:
2895484
Mfg#:
11537511083
In Stock at Vendor
$35.99

This product was last offered at the strikethrough price on
05-07-2026

$34.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Thermostat Parts

Your thermostat helps regulate engine temperatures by allowing the coolant to circulate through the radiator once it opens. If it fails, this might mean it never closes, but worst case, it could mean your coolant doesn't get to the radiator. Stay ahead of cooling issues by replacing your thermostat regularly with an OEM thermostat or quality aftermarket thermostat from our selection.

Let us help you find the parts that fit your BMW

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Manufacturer names and/or part numbers are used only for identification purposes.

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