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BMW E46 325Ci M54 2.5L

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BMW E46 325Ci M54 2.5L Engine Thermostat Parts

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Racing Thermostat - 70C

ES#4338353 - mmts-e46-99v2 - Racing Thermostat - 70C - Modified thermostat for high performance applications. Use with factory thermostat housing. - Mishimoto - BMW

Modified thermostat for high performance applications. Use with factory thermostat housing.

Brand:
Mishimoto - Corporate Logo
ES#:
4338353
Mfg#:
MMTS-E46-99V2
In Stock at Vendor
$135.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Replacement Kit

ES#2592647 - 11537509227KT2 - Thermostat Replacement Kit - Includes gaskets and hardware and coolant - Assembled By ECS - BMW

Includes gaskets and hardware and coolant 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2592647
Mfg#:
11537509227KT2
Ships on Jan 15, 2027
$101.99

This product was last offered at the strikethrough price on
07-23-2026

$100.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Thermostat With Housing

ES#3230754 - 11537509227 - Thermostat With Housing - A common item to crack causing leaks - Rein - BMW

A common item to crack causing leaks 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3230754
Mfg#:
11537509227
Ships in 4 Business Days
$89.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing Gasket

ES#3676458 - 703307100 - Thermostat Housing Gasket - Needs to be replaced once removed - Victor Reinz - BMW

Needs to be replaced once removed

Brand:
Victor Reinz - Corporate Logo
ES#:
3676458
Mfg#:
703307100
In Stock
ON SALE! SAVE 10%
$10.64

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

$9.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing Gasket

ES#4316576 - 11537509357 - Thermostat Housing Gasket - Needs to be replaced once removed - URO - BMW

Needs to be replaced once removed 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4316576
Mfg#:
11537509357
Ships in 1 Business Day
$2.99 USD
Free Shipping
on orders $49 and up

Thermostat With Housing

ES#4726368 - 11537509227 - Thermostat With Housing - A common item to crack causing leaks - Vemo - BMW

A common item to crack causing leaks

Brand:
Vemo - Corporate Logo
ES#:
4726368
Mfg#:
11537509227
In Stock at Vendor
$175.00

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

$170.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Competition Thermostat Plate Kit

Replaces factory thermostat with a mechanical thermostat

Brand:
Zionsville Autosport - Corporate Logo
ES#:
4500477
Mfg#:
M54THERM
Ships on Aug 18, 2026
$209.99 USD
Free Shipping
on orders $49 and up

BMW - Engine/Cooling

ES#4900639 - 11531437040 - BMW - Engine/Cooling - A common item to crack causing leaks - Meyle - BMW

A common item to crack causing leaks 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat! For vehicles with production date from 09/1998

Brand:
Meyle - Corporate Logo
ES#:
4900639
Mfg#:
11531437040
Special Order: No Guaranteed ETA
$75.99 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.

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

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