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BMW Engine Thermostat Parts

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Thermostat Replacement Kit

ES#2718469 - 11537836155KT1 - Thermostat Replacement Kit - Includes thermostat with o-ring, and coolant - Assembled By ECS - BMW

Includes thermostat with o-ring, and coolant 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#:
2718469
Mfg#:
11537836155KT1
In Stock
ON SALE!
$104.99

This product was last offered at the strikethrough price on
01-03-2026

$99.87 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Water Pump & Thermostat Kit

ES#4810742 - 11518482251KT - Water Pump & Thermostat Kit - Includes a new water pump, heat management module, coolant outlet pipe, and all new o-ring seals - Genuine BMW - BMW

Includes a new water pump, heat management module, coolant outlet pipe, and all new o-ring seals affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For models without the 48V Mild Hybrid package
For vehicles with the B58D (Gen2) engine only - Will not fit the earlier B58A (Gen1) engine

Brand:
Genuine BMW - Corporate Logo
ES#:
4810742
Mfg#:
11518482251KT
Ships in 1 day
$715.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Thermostat Module Coolant Pipe W/ Wire Bracket

ES#4179822 - 11538651265 - Thermostat Module Coolant Pipe W/ Wire Bracket - Connects to the thermostat module and supports the electrical wiring harness - Genuine BMW - BMW

Connects to the thermostat module and supports the electrical wiring harness affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Pre-LCI models with the earlier B46D engine

Brand:
Genuine BMW - Corporate Logo
ES#:
4179822
Mfg#:
11538651265
In Stock
1% off MSRP

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

$78.99

This product was last offered at the strikethrough price on
03-04-2026

$77.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat

ES#2813514 - 11537549476 - Thermostat - Restore proper function to your cooling system - Hamburg Tech - BMW

Restore proper function to your cooling system 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#:
2813514
Mfg#:
11537549476
Ships in 1 Business Day
$76.99

This product was last offered at the strikethrough price on
04-07-2026

$75.99 USD
Free Shipping
on orders $49 and up

Thermostat - 88�C

ES#25085 - 11537511580 - Thermostat - 88C - Common point of failure in the cooling system. - Genuine BMW - BMW

Common point of failure in the cooling system. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
25085
Mfg#:
11537511580
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.

$59.99

This product was last offered at the strikethrough price on
06-04-2026

$57.99 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
24765
Mfg#:
11531318274
Ships in 1 day
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
06-04-2026

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

Radiator Return Pipe

ES#3421131 - 11538630023 - Radiator Return Pipe - Coolant pipe that runs from the thermostat next to the engine block - Genuine BMW - BMW

Coolant pipe that runs from the thermostat next to the engine block affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
3421131
Mfg#:
11538630023
Ships in 1 day
7% off MSRP

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

$329.99

This product was last offered at the strikethrough price on
06-04-2026

$306.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Replacement Kit

ES#2582080 - N524TSTKT - Thermostat Replacement Kit - Includes mounting hardware and coolant - Genuine BMW - BMW

Includes mounting hardware and coolant affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2582080
Mfg#:
N524TSTKT
In Stock
$298.99

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

$296.99 USD
Free Shipping
This product is lifetime replacement eligible Partial 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

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

Coolant Hose - Water Pump to Thermostat Module

ES#4179818 - 11538650981 - Coolant Hose - Water Pump to Thermostat Module - Feeds coolant from the water pump to the thermostat module - Genuine BMW - BMW

Feeds coolant from the water pump to the thermostat module affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For models with the B48D, B46D, or B46X engines only - Not for the earlier Gen1 or later Gen3 engines

Brand:
Genuine BMW - Corporate Logo
ES#:
4179818
Mfg#:
11538650981
In Stock
10% off MSRP

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

$109.99

This product was last offered at the strikethrough price on
06-04-2026

$98.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump And Thermostat Kit - N54

ES#2763074 - 11517632426KT4 - Water Pump And Thermostat Kit - N54 - Includes everything you need to replace your water pump and thermostat. Featuring OE water pump and thermostat. - Assembled By ECS - BMW

Includes everything you need to replace your water pump and thermostat. Featuring OE water pump and thermostat. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Featuring all German-made components - water pump, Wahler thermostat, Genuine BMW coolant

Brand:
Assembled By ECS - Corporate Logo
ES#:
2763074
Mfg#:
11517632426KT4
Ships on Oct 14, 2026
$679.99

This product was last offered at the strikethrough price on
12-09-2025

$575.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Thermostat Replacement kit - 90C

ES#2966600 - 11537586885KT - Thermostat Replacement kit - 90C - Low-temp thermostat reduces stresses on engine components and improves performance - Assembled By ECS - BMW

Low-temp thermostat reduces stresses on engine components and improves performance 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#:
2966600
Mfg#:
11537586885KT
In Stock
ON SALE!
$146.99

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

$142.66 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Electric Fan Conversion Kit

ES#2812843 - E36FNDKT6 - Electric Fan Conversion Kit - Free up some extra horsepower by replacing your fan with a Mishimoto e-fan - Assembled By ECS - BMW

Free up some extra horsepower by replacing your fan with a Mishimoto e-fan affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with production date from 09/1995

Brand:
Assembled By ECS - Corporate Logo
ES#:
2812843
Mfg#:
E36FNDKT6
In Stock
$548.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Auxiliary Thermostat

ES#4760000 - 13541730682 - Auxiliary Thermostat - Thermostat that controls water flow temperature to the throttle body - Bremmen Parts - BMW

Thermostat that controls water flow temperature to the throttle body affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4760000
Mfg#:
13541730682
In Stock
Limited Qty Sale
$63.99

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

$44.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat With Housing

ES#252487 - 11531436386 - Thermostat With Housing - Includes housing & O-ring - Mahle-Behr - BMW
ECS Tuning recommends this product.

Includes housing & O-ring affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with M62 engines

Brand:
Mahle-Behr - Corporate Logo
ES#:
252487
Mfg#:
11531436386
In Stock at Vendor
$173.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 80C

ES#4845542 - 11531710953 - Thermostat - 80C - The Thermostat 80C from ECS Tuning is the perfect choice for BMW owners seeking to maintain optimal engine performance and protect critical components from overheating, ensuring long-term reliability. - Rein - BMW

The Thermostat 80C from ECS Tuning is the perfect choice for BMW owners seeking to maintain optimal engine performance and protect critical components from overheating, ensuring long-term reliability. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4845542
Mfg#:
11531710953
Back Ordered
Auto Notify
$19.99 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.

Other BMW Engine Thermostat Parts

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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