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BMW M3 Engine Cooling Parts

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Water Pump O-Ring

ES#25166 - 11537830709 - Water Pump O-Ring - Original equipment replacement O-Ring - Genuine BMW - BMW
ECS Tuning recommends this product.

Original equipment replacement O-Ring affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
25166
Mfg#:
11537830709
In Stock
$6.99 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

Performance Cooling Kit - Without Radiator

ES#2587159 - 888010330PERKT2 - Performance Cooling Kit - Without Radiator - It's time to get serious about your cooling system! - Assembled By ECS - BMW

It's time to get serious about your cooling system! 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#:
2587159
Mfg#:
888010330PERKT2
Back Ordered
Auto Notify
ON SALE!
$666.99

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

$650.49 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Radiator Hose - Lower

ES#25172 - 11537830715 - Radiator Hose - Lower - Lower radiator hose with plastic securing flange - Genuine BMW - BMW

Lower radiator hose with plastic securing flange affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
25172
Mfg#:
11537830715
Ships in 3 Business Days
$64.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

E9X M3 Radiator Hose - Lower

ES#3141678 - 11537840661 - E9X M3 Radiator Hose - Lower - Connects the radiator to the thermostat housing - Rein - BMW

Connects the radiator to the thermostat housing 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#:
3141678
Mfg#:
11537840661
In Stock
$49.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

DO88 Racing Auxiliary Oil Cooler - E46 M3

ES#4656909 - OC120E46 - DO88 Racing Auxiliary Oil Cooler - E46 M3 - Oil cooler for power steering or gearbox oil cooling. - DO88 - BMW

Oil cooler for power steering or gearbox oil cooling. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
DO88 - Corporate Logo
ES#:
4656909
Mfg#:
OC120E46
In Stock
$646.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Fan Switch

ES#4068878 - 61318363677 - Auxiliary Fan Switch - Does not include o-ring - Facet - BMW

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

Brand:
Facet - Corporate Logo
ES#:
4068878
Mfg#:
61318363677
In Stock at Vendor
$39.38

This product was last offered at the strikethrough price on
05-09-2026

$39.28 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump Pulley

ES#24459 - 11517840403 - Water Pump Pulley - Should be replaced each time with the water pump - Genuine BMW - BMW

Should be replaced each time with the water pump affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
24459
Mfg#:
11517840403
Ships in 3 Business Days
$208.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Connection Pipe O-Ring - Priced Each

ES#24781 - 11531406249 - Connection Pipe O-Ring - Priced Each - Used on both ends of the water pump connection pipe - Genuine BMW - BMW

Used on both ends of the water pump connection pipe affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
24781
Mfg#:
11531406249
In Stock
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E46 Radiator

ES#2070637 - 17102228941 - E46 Radiator - Aftermarket radiator for your E46 M3 - Nissens - BMW

Aftermarket radiator for your E46 M3 We Price Match - Give Us A Call or Chat! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Nissens - Corporate Logo
ES#:
2070637
Mfg#:
17102228941
Special Order: No Guaranteed ETA
$721.88

This product was last offered at the strikethrough price on
12-15-2025

$619.99 USD
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

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 1-2 days
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
06-03-2026

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

Aluminum Water Pump Pulley Kit

ES#2718229 - 002778ECS01AKT - Aluminum Water Pump Pulley Kit - Includes belt and hardware - Assembled By ECS - BMW

Includes belt and hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
A "bolt on and go" answer to a weak, unattractive water pump pulley

Brand:
Assembled By ECS - Corporate Logo
ES#:
2718229
Mfg#:
002778ECS01AKT
Ships on Oct 21, 2026
$86.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Powerflex - Offset Lower Radiator Mounts - Street

ES#4716247 - PFF5-4652 - Powerflex - Offset Lower Radiator Mounts - Street - Enhance cooling efficiency, precise radiator alignment, improved durability, & reduced vibrations - Powerflex - BMW

Enhance cooling efficiency, precise radiator alignment, improved durability, & reduced vibrations affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Powerflex - Corporate Logo
ES#:
4716247
Mfg#:
PFF5-4652
In Stock
$42.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Radiator Bracket - Lower Left

ES#2767252 - 51648055741 - Auxiliary Radiator Bracket - Lower Left - Genuine BMW - BMW

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

Brand:
Genuine BMW - Corporate Logo
ES#:
2767252
Mfg#:
51648055741
Ships in 3 Business 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.

$105.99

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

$100.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Auxiliary Radiators

ES#4686159 - MMRAD-G80-21A - Performance Auxiliary Radiators - Keep Your Coolant Temperatures Low With These Upgraded Auxiliary Radiators! - Mishimoto - BMW

Keep Your Coolant Temperatures Low With These Upgraded Auxiliary Radiators! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mishimoto - Corporate Logo
ES#:
4686159
Mfg#:
MMRAD-G80-21A
In Stock at Vendor
$587.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime 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.

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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