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BMW 328i Engine Thermostat Parts

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ES#2777338 - 11517586925KT5 - Water Pump And Thermostat Kit - Includes everything you need to replace your water pump and thermostat. - Assembled By ECS - BMW
ECS Tuning recommends this product.

Includes everything you need to replace your water pump and thermostat. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2777338
Mfg#:
11517586925KT5
In Stock
ON SALE! SAVE 25%
$424.99

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

$318.74 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 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
ES#4487843 - 11537549476 - Thermostat - Replaces failed thermostat or as preventative maintenance for your cooling system - Bremmen Parts - BMW

Replaces failed thermostat or as preventative maintenance for your cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4487843
Mfg#:
11537549476
In Stock
ON SALE! SAVE 18%
$84.99

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

$69.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2562599 - 11537549476 - Thermostat - Restore proper function to your cooling system - Mahle-Behr - BMW
ECS Tuning recommends this product.

Restore proper function to your cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mahle-Behr - Corporate Logo
ES#:
2562599
Mfg#:
11537549476
In Stock
$135.99

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

$108.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4877083 - 008641LA03 - N52 Exact-Fit Silicone Radiator Hoses - Retains OEM fitment with superior looks and durability. Pre-assembled with factory connectors for easy installation! - ECS - BMW
ECS Tuning recommends this product.

Retains OEM fitment with superior looks and durability. Pre-assembled with factory connectors for easy installation! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

For Vehicles With Engine Code N52B30 (Non-SULEV w/o Auxiliary Heating)

Brand:
ECS - Corporate Logo
ES#:
4877083
Mfg#:
008641LA03
In Stock
ON SALE!
$127.99

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

$124.15 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4759997 - 11538635689M - Thermostat With Aluminum Housing - N20 - Aluminum construction for improved durability over stock design! Includes an integrated thermostat. - Bremmen Parts - BMW

Aluminum construction for improved durability over stock design! Includes an integrated thermostat. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4759997
Mfg#:
11538635689M
In Stock
ON SALE! SAVE 20%
$125.99

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

$100.36 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Wahler - Corporate Logo
ES#:
10944
Mfg#:
11537509227
In Stock
$66.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4820921 - 11517586925KT - Water Pump And Thermostat - Featuring Hamburg Technic Coolant Pump & Thermostat with hardware - Hamburg Tech - BMW

Featuring Hamburg Technic Coolant Pump & Thermostat with hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
4820921
Mfg#:
11517586925KT
In Stock
$339.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4017637 - 11537549476 - Thermostat - Restore proper function to your cooling system - URO - BMW

Restore proper function to your cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4017637
Mfg#:
11537549476
In Stock
$74.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2960474 - 11517604027KT - Water Pump And Thermostat Kit - Includes everything you need to replace your water pump and thermostat - Assembled By ECS - BMW

Includes everything you need to replace your water pump and thermostat affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2960474
Mfg#:
11517604027KT
In Stock
ON SALE!
$482.99

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

$468.09 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2142870 - 11537549476 -  Thermostat - Restore proper function to your cooling system - Wahler - BMW

Restore proper function to your cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Wahler - Corporate Logo
ES#:
2142870
Mfg#:
11537549476
In Stock
$97.91

This product was last offered at the strikethrough price on
03-25-2026

$96.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! 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
ES#25121 - 11537549476 - Thermostat - Restore proper function to your cooling system - Genuine BMW - BMW

Restore proper function to your cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
25121
Mfg#:
11537549476
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.

$316.79

This product was last offered at the strikethrough price on
01-07-2026

$265.77 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2960473 - 11537633476 - Thermostat With Housing - No heat? Overheating? Time for a cooling system service. - Mahle-Behr - BMW

No heat? Overheating? Time for a cooling system service. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mahle-Behr - Corporate Logo
ES#:
2960473
Mfg#:
11537633476
In Stock
$104.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4690253 - 11538635689 - Thermostat With Housing - No heat? Overheating? Time for a cooling system service. - Bavarian Autosport - BMW

No heat? Overheating? Time for a cooling system service. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bavarian Autosport - Corporate Logo
ES#:
4690253
Mfg#:
11538635689
In Stock
ON SALE! SAVE 20%
$67.99

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

$54.39 USD
Free Shipping
on orders $49 and up
ES#2777337 - 11517586925KT4 - Water Pump And Thermostat Kit - Includes everything you need to replace your water pump and thermostat - Genuine BMW - BMW

Includes everything you need to replace your water pump and thermostat affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2777337
Mfg#:
11517586925KT4
Ships in 1-2 days
$1034.99

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

$1032.99 USD
Free Shipping
This product is lifetime replacement eligible Partial 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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