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BMW E46 Engine Cooling Parts

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Universal Coolant System Tester

ES#199581 - 83300494417 - Universal Coolant System Tester - Checks the engine cooling system for water tightness to ensure there are no leaks. - Genuine BMW - BMW MINI

Checks the engine cooling system for water tightness to ensure there are no leaks.

Brand:
Genuine BMW - Corporate Logo
ES#:
199581
Mfg#:
83300494417
Ships in 2 Business Days
$796.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Fan Clutch

ES#2534571 - 11527831619 - Radiator Fan Clutch - Direct replacement - URO - BMW

Direct replacement 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2534571
Mfg#:
11527831619
In Stock
$71.83 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Replacement Universal Oil Cooler - 19 Row

ES#2855412 - MM0C-19 - Replacement Universal Oil Cooler - 19 Row - Serious engine oil cooling for the most demanding engines - Mishimoto - Audi BMW Volkswagen MINI

Serious engine oil cooling for the most demanding engines

Brand:
Mishimoto - Corporate Logo
ES#:
2855412
Mfg#:
MM0C-19
In Stock
$218.99

This product was last offered at the strikethrough price on
05-06-2026

$196.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cooling System Refresh Kit - Level 2

ES#2707752 - 17127510952KT9 - Cooling System Refresh Kit - Level 2 - A more advanced kit that includes belt service components and a ECS aluminum pulley - featuring high quality aftermarket contents - Assembled By ECS - BMW

A more advanced kit that includes belt service components and a ECS aluminum pulley - featuring high quality aftermarket contents 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2707752
Mfg#:
17127510952KT9
Ships on Dec 4, 2026
Auto Notify
ON SALE! SAVE 13%
$860.99

This product was last offered at the strikethrough price on
07-15-2026

$752.62 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

Brand:
Genuine BMW - Corporate Logo
ES#:
25172
Mfg#:
11537830715
Ships in 2 Business Days
$64.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Temperature Sensor

ES#4316486 - 13621433076 - Temperature Sensor - Monitors coolant / oil temperature - Bavarian Autosport - BMW

Monitors coolant / oil temperature 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bavarian Autosport - Corporate Logo
ES#:
4316486
Mfg#:
13621433076
In Stock
ON SALE! SAVE 20%
$14.99

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

$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Fan Clutch

ES#24512 - 11527831619 - Radiator Fan Clutch - OEM replacement - Genuine BMW - BMW

OEM replacement

Brand:
Genuine BMW - Corporate Logo
ES#:
24512
Mfg#:
11527831619
Ships in 2 Business Days
3% off MSRP

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

$401.99

This product was last offered at the strikethrough price on
07-21-2026

$388.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal Oil Cooler Black - 10 Row

ES#2764962 - MM0C10BK - Universal Oil Cooler Black - 10 Row - Serious engine oil cooling for the most demanding engines - Mishimoto - Audi BMW Volkswagen MINI

Serious engine oil cooling for the most demanding engines

Brand:
Mishimoto - Corporate Logo
ES#:
2764962
Mfg#:
MM0C10BK
In Stock
$126.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Performance Cooling System Refresh Kit - Level 1

ES#4315901 - ECSE461711-3KT - ECS Performance Cooling System Refresh Kit - Level 1 - Featuring Stewart High Performance water pump, heavy duty ECS water pump pulley, ECS Silicone hoses, and racing thermostat! - Assembled By ECS - BMW

Featuring Stewart High Performance water pump, heavy duty ECS water pump pulley, ECS Silicone hoses, and racing thermostat! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4315901
Mfg#:
ECSE461711-3KT
Ships in 2 Business Days
ON SALE!
$764.99

This product was last offered at the strikethrough price on
06-15-2026

$753.12 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

DO88 Racing Oil Cooler - E46 M3

ES#4656912 - OC150 - DO88 Racing Oil Cooler - E46 M3 - The perfect oil cooler for the track and on the street! - DO88 - BMW

The perfect oil cooler for the track and on the street!

Brand:
DO88 - Corporate Logo
ES#:
4656912
Mfg#:
OC150
In Stock at Vendor
$749.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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

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

E46 M3 Coolant Expansion Tank

ES#5396264 - 17112283344 - E46 M3 Coolant Expansion Tank - Replacement plastic expansion tank for BMW M3, includes sealing cap - URO - BMW

Replacement plastic expansion tank for BMW M3, includes sealing cap 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
URO - Corporate Logo
ES#:
5396264
Mfg#:
17112283344
Ships in 1 Business Day
ON SALE!
$155.99

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

$148.19 USD
Free Shipping
on orders $49 and up

Thermostat - 80*C

ES#24765 - 11531318274 - Thermostat - 80*C - Does not include gasket - Genuine BMW - BMW

Does not include gasket

Brand:
Genuine BMW - Corporate Logo
ES#:
24765
Mfg#:
11531318274
Ships in 1-3 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
07-21-2026

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

Aluminum Radiator - Blue Hose - E46 M3

ES#4656923 - WC310B - Aluminum Radiator - Blue Hose - E46 M3 - Let your engine breathe better with this DO88 Radiator! - DO88 - BMW

Let your engine breathe better with this DO88 Radiator!

Brand:
DO88 - Corporate Logo
ES#:
4656923
Mfg#:
WC310B
Ships on Aug 10, 2026
$735.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Fan Pulley Holder Tool

ES#3673887 - B8800031 - Fan Pulley Holder Tool - Make your water pump or fan clutch a simple install. Holds the head of pulley bolts for fast fan clutch and water pump pulley removal. - Bav Auto Tools - BMW
ECS Tuning recommends this product.

Make your water pump or fan clutch a simple install. Holds the head of pulley bolts for fast fan clutch and water pump pulley removal. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bav Auto Tools - Corporate Logo
ES#:
3673887
Mfg#:
B8800031
In Stock
ON SALE! SAVE 15%
$23.99

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

$20.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Puller Fan Assembly

ES#38183 - 17117561757 - Auxiliary Puller Fan Assembly - Cooling fan mounted behind the radiator - Genuine BMW - BMW

Cooling fan mounted behind the radiator For vehicles with production date from 10/1998

Brand:
Genuine BMW - Corporate Logo
ES#:
38183
Mfg#:
17117561757
Ships in 2 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.

$759.99

This product was last offered at the strikethrough price on
07-21-2026

$725.99 USD
Free Shipping
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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