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BMW E39 525i M54 2.5L

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BMW E39 525i M54 2.5L Engine Cooling Parts

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Auxiliary Fan Switch

ES#1866446 - 13621433077 - Auxiliary Fan Switch - Comes with related o-ring - FAE - BMW

Comes with related o-ring affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
FAE - Corporate Logo
ES#:
1866446
Mfg#:
13621433077
In Stock
$22.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Hose Connector

ES#4877194 - 11537545890PRMK - Coolant Hose Connector - Metal Connector vs OEM Plastic - URO Premium - BMW

Metal Connector vs OEM Plastic affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
URO Premium - Corporate Logo
ES#:
4877194
Mfg#:
11537545890PRMK
In Stock
$24.99 USD
Free Shipping
on orders $49 and up

Fan Blade

ES#2813458 - 11521712058 - Fan Blade - Replace your brittle fan before it sends a blade through your radiator - Hamburg Tech - BMW

Replace your brittle fan before it sends a blade through your radiator 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#:
2813458
Mfg#:
11521712058
In Stock
$22.95 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Fan Blade (420 mm) (11 Blade)

ES#2895458 - 11521712058 - Fan Blade (420 mm) (11 Blade) - Replace your brittle fan blades before it sends a blade through your radiator - Vemo - BMW

Replace your brittle fan blades before it sends a blade through your radiator affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vemo - Corporate Logo
ES#:
2895458
Mfg#:
11521712058
In Stock at Vendor
$75.99

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

$73.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#37707 - 17111436381 - Coolant Expansion Tank - Does not include cap - Genuine BMW - BMW

Does not include cap affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
37707
Mfg#:
17111436381
Ships in 3 Business Days
4% off MSRP

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

$164.99

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

$158.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

2 Pin Connector

ES#4772597 - 61132359999 - 2 Pin Connector - Includes connector housing with terminals and seals. Commonly used for the coolant level sensor. - ECS - BMW MINI

Includes connector housing with terminals and seals. Commonly used for the coolant level sensor. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4772597
Mfg#:
61132359999
Ships on Jul 28, 2026
Auto Notify
ON SALE! SAVE 25%
$10.99

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

$8.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E39 Radiator Hose - Lower

ES#4818538 - 11531705224 - E39 Radiator Hose - Lower - Includes retaining clips - Bremmen Parts - BMW

Includes retaining clips affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818538
Mfg#:
11531705224
In Stock
ON SALE! SAVE 21%
$36.99

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

$29.37 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator

ES#37695 - 17111436060 - Radiator - Replace your leaking radiator - Genuine BMW - BMW

Replace your leaking radiator affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
37695
Mfg#:
17111436060
Ships in 3 Business Days
6% off MSRP

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

$648.99

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

$606.99 USD
This product is lifetime replacement eligible Lifetime 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

Mishimoto Liquid Chill Radiator Coolant Additive - 4oz

ES#2764643 - MMRALC - Mishimoto Liquid Chill Radiator Coolant Additive - 4oz - Pairs with all types of coolant to increase heat transfer and decrease engine temps. - Mishimoto - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Pairs with all types of coolant to increase heat transfer and decrease engine temps. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mishimoto - Corporate Logo
ES#:
2764643
Mfg#:
MMRALC
Ships in 4 Business Days
$22.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Valve

ES#177288 - 64118375237 - Water Valve - With additional water pump - Genuine BMW - BMW

With additional water pump affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
177288
Mfg#:
64118375237
Ships in 6 Business Days
4% off MSRP

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

$561.99

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

$539.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Hex Bolt

ES#14585 - 07119904529 - Hex Bolt - M10x55 - Genuine BMW - BMW

M10x55 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
14585
Mfg#:
07119904529
In Stock
$10.45

This product was last offered at the strikethrough price on
04-14-2026

$9.95 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Anti-Freeze / Coolant - 1.5 Liter

ES#1912 - AF G001100 - Anti-Freeze / Coolant - 1.5 Liter - Blue Pentofrost Antifreeze coolant in color. Meets VAG G11 and MB 325.0 standards. - Pentosin - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Blue Pentofrost Antifreeze coolant in color. Meets VAG G11 and MB 325.0 standards. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Pentosin - Corporate Logo
ES#:
1912
Mfg#:
AF G001100
Ships in 7 Business Days
$14.99 USD
Free Shipping
on orders $49 and up

Auxiliary Fan Switch

ES#2896231 - 13621433077 - Auxiliary Fan Switch - Comes with related o-ring - Vemo - BMW MINI
ECS Tuning recommends this product.

Comes with related o-ring affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vemo - Corporate Logo
ES#:
2896231
Mfg#:
13621433077
In Stock at Vendor
$45.99

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

$43.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Cooling Maintenance Kit - Level 2

ES#2063877 - ECSE391153 - ECS Cooling Maintenance Kit - Level 2 - Stop your cooling problems before they start - includes an ECS Aluminum water pump pulley and featuring a GEBA water pump with a metal impeller - Assembled By ECS - BMW

Stop your cooling problems before they start - includes an ECS Aluminum water pump pulley and featuring a GEBA water pump with a metal impeller affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with production date up to 09/2002

Brand:
Assembled By ECS - Corporate Logo
ES#:
2063877
Mfg#:
ECSE391153
Ships in 5 Business Days
ON SALE!
$492.99

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

$470.91 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

ECS Cooling Maintenance Kit - Level 2

ES#2063875 - ECSE391155 - ECS Cooling Maintenance Kit - Level 2 - Stop your cooling problems before they start - includes an ECS Aluminum water pump pulley and featuring a GEBA water pump with a metal impeller - Assembled By ECS - BMW

Stop your cooling problems before they start - includes an ECS Aluminum water pump pulley and featuring a GEBA water pump with a metal impeller affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with production date from 09/2002

Brand:
Assembled By ECS - Corporate Logo
ES#:
2063875
Mfg#:
ECSE391155
Ships on Jul 17, 2026
Auto Notify
ON SALE!
$490.99

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

$468.24 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

More About Engine Cooling Parts

Optimize your engine cooling system performance and heater output with quality drive belts, coolant hoses, cooling system parts, and approved coolant fluids from ECS Tuning. Head off expensive repairs and untimely breakdowns with regularly scheduled cooling system inspection and maintenance.

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

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