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BMW E34 525i M20 2.5L

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BMW E34 525i M20 2.5L Engine Thermostat Parts

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OEM Thermostat Replacement Kit

ES#3675360 - 11531730470k1KT - OEM Thermostat Replacement Kit - Featuring Genuine BMW replacement parts - Genuine BMW - BMW

Featuring Genuine BMW replacement parts

Brand:
Genuine BMW - Corporate Logo
ES#:
3675360
Mfg#:
11531730470K1KT
In Stock
$224.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 80C

ES#3023804 - 11531713040 - Thermostat - 80C - Includes sealing o-ring - Mahle-Behr - BMW

Includes sealing o-ring

Brand:
Mahle-Behr - Corporate Logo
ES#:
3023804
Mfg#:
11531713040
In Stock
$36.00

This product was last offered at the strikethrough price on
04-24-2026

$35.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#24944 - 11531730470 - Thermostat Housing - Eliminates a weak link in your cooling system. - Genuine BMW - BMW

Eliminates a weak link in your cooling system.

Brand:
Genuine BMW - Corporate Logo
ES#:
24944
Mfg#:
11531730470
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.

$151.99

This product was last offered at the strikethrough price on
09-04-2026

$146.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 80C

ES#2712776 - 11531713040 - Thermostat - 80C - Includes sealing o-ring - Vemo - BMW
ECS Tuning recommends this product.

Includes sealing o-ring

Brand:
Vemo - Corporate Logo
ES#:
2712776
Mfg#:
11531713040
In Stock
$21.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime 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 10X Entries Into Our F80 M3 Sweepstakes

For vehicles with production date from 09/1990

Brand:
Bremmen Parts - Corporate Logo
ES#:
4760000
Mfg#:
13541730682
Ships in 10 Business Days
Auto Notify
$64.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#3202801 - 11531730470 - Thermostat Housing - Keep your car running at the proper temperature. - URO - BMW

Keep your car running at the proper temperature. 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat! For vehicles made in 09/1987 only

Brand:
URO - Corporate Logo
ES#:
3202801
Mfg#:
11531730470
In Stock
$39.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing Cover

ES#24567 - 11531265059 - Thermostat Housing Cover - Replace your old or cracked thermostat cover - Genuine BMW - BMW

Replace your old or cracked thermostat cover

Brand:
Genuine BMW - Corporate Logo
ES#:
24567
Mfg#:
11531265059
Ships in 1-2 days
5% off MSRP

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

$36.99

This product was last offered at the strikethrough price on
09-04-2026

$34.99 USD
Free Shipping
on orders $49 and up
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. 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4845542
Mfg#:
11531710953
In Stock
ON SALE!
$19.99

This product was last offered at the strikethrough price on
08-31-2026

$18.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing Cover

ES#3075786 - 11531265059 - Thermostat Housing Cover - Replace your old or cracked thermostat cover - URO - BMW

Replace your old or cracked thermostat cover 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
3075786
Mfg#:
11531265059
In Stock
$25.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 80C

ES#2797919 - 11531710953 - Thermostat - 80C - Gasket not included - Genuine BMW - BMW

Gasket not included

Brand:
Genuine BMW - Corporate Logo
ES#:
2797919
Mfg#:
11531710953
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
09-04-2026

$57.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Thermostat

ES#34103 - 13541730682 - Auxiliary Thermostat - Thermostat that controls water flow temperature to the throttle body - Genuine BMW - BMW

Thermostat that controls water flow temperature to the throttle body For vehicles with production date from 09/1990

Brand:
Genuine BMW - Corporate Logo
ES#:
34103
Mfg#:
13541730682
Ships in 1-2 days
2% off MSRP

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

$103.99

This product was last offered at the strikethrough price on
09-04-2026

$101.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#2091301 - 11531730470 - Thermostat Housing - Keep your car running at the proper temperature. - MTC - BMW

Keep your car running at the proper temperature.

Brand:
MTC - Corporate Logo
ES#:
2091301
Mfg#:
11531730470
Ships in 6 Business Days
$33.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring

ES#24568 - 11531265084 - Thermostat O-Ring - Seals thermostat to cylinder head - Genuine BMW - BMW

Seals thermostat to cylinder head

Brand:
Genuine BMW - Corporate Logo
ES#:
24568
Mfg#:
11531265084
In Stock
$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 80°C

ES#4070380 - 11531713040 - Thermostat - 80C - Includes sealing o-ring - Wahler - BMW

Includes sealing o-ring

Brand:
Wahler - Corporate Logo
ES#:
4070380
Mfg#:
11531713040
In Stock
$49.61

This product was last offered at the strikethrough price on
08-13-2026

$36.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing Gasket

ES#24929 - 11531722692 - Thermostat Housing Gasket - Placed between the engine and thermostat housing - Genuine BMW - BMW

Placed between the engine and thermostat housing

Brand:
Genuine BMW - Corporate Logo
ES#:
24929
Mfg#:
11531722692
In Stock
6% off MSRP

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

$12.22

This product was last offered at the strikethrough price on
09-04-2026

$11.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring

ES#11800 - N90136802 - Thermostat O-Ring - Ensure a proper seal when installing your new thermostat - Febi - Audi BMW Volkswagen

Ensure a proper seal when installing your new thermostat We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
11800
Mfg#:
N90136802
In Stock
$1.59 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.

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

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