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BMW E46 M3 S54 3.2L

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BMW E46 M3 S54 3.2L Engine Cooling Parts

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Radiator Relief Flush

ES#2608077 - 040202 - Radiator Relief Flush - Concentrated cleansing agent that effectively cleans your cooling system! - DEI - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Concentrated cleansing agent that effectively cleans your cooling system!

Brand:
DEI - Corporate Logo
ES#:
2608077
Mfg#:
040202
In Stock
$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Fan Switch

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

Comes with related o-ring Mounted in upper radiator hose, controls operation of auxiliary fan

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

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 Into Our F80 M3 Sweepstakes

Brand:
URO - Corporate Logo
ES#:
5396264
Mfg#:
17112283344
Ships in 1 Business Day
$155.99 USD
Free Shipping
on orders $49 and up

E46 M3 Coolant Pipe

ES#25168 - 11537830711 - E46 M3 Coolant Pipe - Connects to the hose that runs to the expansion tank - Genuine BMW - BMW

Connects to the hose that runs to the expansion tank

Brand:
Genuine BMW - Corporate Logo
ES#:
25168
Mfg#:
11537830711
Ships in 1 day
1% off MSRP

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

$155.99

This product was last offered at the strikethrough price on
10-11-2026

$154.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Replacement Kit

ES#2984802 - 11531318274KT - Thermostat Replacement Kit - Includes thermostat, o-ring, and coolant - Assembled By ECS - BMW

Includes thermostat, o-ring, and coolant 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2984802
Mfg#:
11531318274KT
In Stock
$151.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Temperature Sensor

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

Monitors coolant / oil temperature 10X Entries Into Our F80 M3 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

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. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4772597
Mfg#:
61132359999
In Stock
ON SALE! SAVE 25%
$10.99

This product was last offered at the strikethrough price on
06-13-2026

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

Performance Aluminum Expansion Tank

ES#3659552 - 63793 - Performance Aluminum Expansion Tank - Keep your car cool and prepared for hot conditions and end "spontaneous combustion" of plastic expansion tanks. - Moroso - BMW

Keep your car cool and prepared for hot conditions and end "spontaneous combustion" of plastic expansion tanks.

Brand:
Moroso - Corporate Logo
ES#:
3659552
Mfg#:
63793
In Stock at Vendor
$433.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Expanding Rivet - Priced Each

ES#37846 - 17111712963 - Expanding Rivet - Priced Each - Fan shroud expanding clamp/rivet - Genuine BMW - BMW

Fan shroud expanding clamp/rivet

Brand:
Genuine BMW - Corporate Logo
ES#:
37846
Mfg#:
17111712963
In Stock
$1.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal 16" Electric Fan - Black

ES#3247470 - 30102048 - Universal 16" Electric Fan - Black - 1959 cfm. High performance pusher fan with curved blades. - Spal - Audi BMW MINI

1959 cfm. High performance pusher fan with curved blades.

Brand:
Spal - Corporate Logo
ES#:
3247470
Mfg#:
30102048
In Stock at Vendor
$207.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#3023872 - 17111742231 - Expansion Tank Cap - Replace when performing cooling service. - Mahle-Behr - BMW

Replace when performing cooling service.

Brand:
Mahle-Behr - Corporate Logo
ES#:
3023872
Mfg#:
17111742231
In Stock
$20.99

This product was last offered at the strikethrough price on
09-10-2026

$19.99 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 Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2707752
Mfg#:
17127510952KT9
Ships on Dec 18, 2026
ON SALE!
$860.99

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

$818.45 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

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 1 day
$796.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Temperature Sensor

ES#2158111 - 13621433076 - Temperature Sensor - Monitors coolant / oil temperature - FAE - BMW

Monitors coolant / oil temperature

Brand:
FAE - Corporate Logo
ES#:
2158111
Mfg#:
13621433076
In Stock
$16.99

This product was last offered at the strikethrough price on
09-25-2026

$14.99 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 1 day
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
10-11-2026

$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
Ships in 3 Business Days
$126.99 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.

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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