Shop Our Clearance Sale - Up To 80% Off FREE SHIPPING on Orders $49+ *exclusions apply

Menu

Call Us330-331-2003 ChatLive Chat Text Us!
0 Shopping Cart
Your Vehicle Clear

BMW E34 525i M20 2.5L

    • Audi
    • BMW
    • Mercedes Benz
    • MINI
    • Porsche
    • Volkswagen

Saved Vehicles

My Vehicles
You currently have no stored vehicles.

Recent Vehicles

Recent Vehicles Manage Vehicles

You currently have no recent vehicles.

We'll automatically keep fully selected vehicles here for your convenience.

Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
0
Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
Cancel
0
Sales & Specials
Enter Your Vehicle
garage-red
Your Vehicle BMW E34 525i M20 2.5L
Your Vehicle BMW E34 525i M20 2.5L
Change Clear

BMW E34 525i M20 2.5L Engine Thermostat Parts

Sort By
Filter By
Return to Top

Fillster HD - Priced Each

ES#24640 - 11531275881 - Fillster HD - Priced Each - Direct replacement from BMW! - Genuine BMW - BMW

Direct replacement from BMW!

Brand:
Genuine BMW - Corporate Logo
ES#:
24640
Mfg#:
11531275881
In Stock
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Replacement Kit

ES#3675365 - 11531730470k2KT - Thermostat Replacement Kit - Featuring high quality aftermarket parts - Assembled By ECS - BMW

Featuring high quality aftermarket parts 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
3675365
Mfg#:
11531730470K2KT
Ships in 3 Business Days
ON SALE! SAVE 22%
$93.99

This product was last offered at the strikethrough price on
06-08-2026

$73.38 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Thermostat

ES#2631368 - 13541730682 - Auxiliary Thermostat - Thermostat that controls water flow temperature to the throttle body - Wahler - BMW

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

Brand:
Wahler - Corporate Logo
ES#:
2631368
Mfg#:
13541730682
Back Ordered
$66.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring

ES#2867257 - 11531265084 - Thermostat O-Ring - Ensure a proper seal when installing your new thermostat - Febi - BMW

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

Brand:
Febi - Corporate Logo
ES#:
2867257
Mfg#:
11531265084
In Stock
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring

ES#3449329 - N90136802 - Thermostat O-Ring - Ensure a proper seal when installing your new thermostat - Victor Reinz - Audi BMW Volkswagen

Ensure a proper seal when installing your new thermostat

Brand:
Victor Reinz - Corporate Logo
ES#:
3449329
Mfg#:
N90136802
Ships in 2 Business Days
$3.99

This product was last offered at the strikethrough price on
03-15-2026

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 80C

ES#2867274 - 11531713040S1 - Thermostat - 80C - Includes sealing O-ring - Febi - BMW

Includes sealing O-ring We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2867274
Mfg#:
11531713040S1
Back Ordered
$35.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring (60 X 3.5 mm)

ES#205296 - 11531265084 - Thermostat O-Ring (60 X 3.5 mm) - Seals thermostat to cylinder head - Rein - BMW

Seals thermostat to cylinder head 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
205296
Mfg#:
11531265084
In Stock at Vendor
ON SALE!
$2.05

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

$1.95 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing Gasket

ES#3028628 - 11531722692 - Thermostat Housing Gasket - Placed between the engine and thermostat housing - Victor Reinz - BMW

Placed between the engine and thermostat housing

Brand:
Victor Reinz - Corporate Logo
ES#:
3028628
Mfg#:
11531722692
Ships in 3 Business Days
$10.99

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

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing Gasket

ES#5339304 - 774.597 - Thermostat Housing Gasket - Placed between the engine and thermostat housing - Elring - BMW

Placed between the engine and thermostat housing 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Elring - Corporate Logo
ES#:
5339304
Mfg#:
774.597
In Stock
$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 80°C

ES#4069242 - 11531466174 - Thermostat - 80C - Gasket not included - Vernet - BMW

Gasket not included

Brand:
Vernet - Corporate Logo
ES#:
4069242
Mfg#:
11531466174
Back Ordered
$14.99

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

$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 80*C

ES#2091291 - 11531466174 - Thermostat - 80*C - Gasket included - MTC - BMW

Gasket included

Brand:
MTC - Corporate Logo
ES#:
2091291
Mfg#:
11531466174
Ships in 9 Business Days
$9.68 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Thermostat - Includes Sealing Gasket

ES#5480734 - 028 280 0004 - Coolant Thermostat - Includes Sealing Gasket - Restore your cooling system's factory efficiency with this premium replacement thermostat from Meyle. - Meyle - BMW

Restore your cooling system's factory efficiency with this premium replacement thermostat from Meyle. 5X Entries Into Our F80 M3 Sweepstakes

Brand:
Meyle - Corporate Logo
ES#:
5480734
Mfg#:
028 280 0004
Ships in 1 Business Day
$11.99 USD
Free Shipping
on orders $49 and up

Thermostat - 80°C

ES#4070089 - 11531713040 - Thermostat - 80C - Includes sealing o-ring - Mahle - BMW

Includes sealing o-ring

Brand:
Mahle - Corporate Logo
ES#:
4070089
Mfg#:
11531713040
Ships on Sep 23, 2026
$35.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 80°C

ES#2602746 - 11531466174 - Thermostat - 80C - Gasket not included - Wahler - BMW

Gasket not included

Brand:
Wahler - Corporate Logo
ES#:
2602746
Mfg#:
11531466174
Ships on Sep 30, 2026
$30.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring

Ensure a proper seal when installing your new thermostat 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Elring - Corporate Logo
ES#:
5340689
Mfg#:
N90136802
Special Order: No Guaranteed ETA
$1.99 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.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

Terms of Use Privacy Policy ECS Tuning is part of Enthusiast Auto Holdings