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BMW E46 323i M52 2.5L

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BMW E46 323i M52 2.5L Engine Cooling Parts

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Expansion Tank Mounting Clamp

ES#3984619 - 17111707777 - Expansion Tank Mounting Clamp - Locks the expansion tank into the mounting plate via the large hole in the bottom of the tank - URO - BMW

Locks the expansion tank into the mounting plate via the large hole in the bottom of the tank 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#:
3984619
Mfg#:
17111707777
Ships in 1 Business Day
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#2814079 - 17111742231 - Expansion Tank Cap - Replace worn or missing pieces. - Hamburg Tech - BMW

Replace worn or missing pieces. 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#:
2814079
Mfg#:
17111742231
Ships in 2 Business Days
$9.17 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Drain Plug With Housing

ES#3419314 - 17111437360 - Radiator Drain Plug With Housing - Located in the bottom of the radiator - Vaico - BMW

Located in the bottom of the radiator affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
For vehicles with automatic transmission only

Brand:
Vaico - Corporate Logo
ES#:
3419314
Mfg#:
17111437360
In Stock at Vendor
$27.99

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

$26.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E46 Radiator Hose - Upper

ES#3698905 - 17127510952 - E46 Radiator Hose - Upper - A common source of cooling system failure - Burgaflex - BMW

A common source of cooling system failure affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Burgaflex - Corporate Logo
ES#:
3698905
Mfg#:
17127510952
Ships in 9 Business Days
$25.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

BMW Radiator Expansion Tank Pressure Fitting

ES#2827105 - 1175 - BMW Radiator Expansion Tank Pressure Fitting - Allows you to check for leaks in the coolant system - Motive - BMW

Allows you to check for leaks in the coolant system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Requires the use of a Motive Power Bleeder, sold separately

Brand:
Motive - Corporate Logo
ES#:
2827105
Mfg#:
1175
Ships on Jun 29, 2026
$24.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E46 Heater Hose

ES#263650 - 64218376999 - E46 Heater Hose - Runs from the engine to the water valve inlet - Elaplast - BMW

Runs from the engine to the water valve inlet affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Elaplast - Corporate Logo
ES#:
263650
Mfg#:
64218376999
Ships in 1-2 days
$22.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Fan Switch O-Ring

ES#2702266 - 13621433077S - Auxiliary Fan Switch O-Ring - Now you can just replace the o-ring instead of the whole switch - URO - BMW MINI

Now you can just replace the o-ring instead of the whole switch 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#:
2702266
Mfg#:
13621433077S
In Stock
$0.88 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Label Tab

ES#37721 - 17111439721 - Expansion Tank Label Tab - Shows information on how to read the fluid level - Genuine BMW - BMW

Shows information on how to read the fluid level affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
37721
Mfg#:
17111439721
Ships in 5 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.

$20.99

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

$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Bracket - Lower

ES#2091404 - 17111436264 - Radiator Bracket - Lower - This is the lower piece that secures the radiator - MTC - BMW

This is the lower piece that secures the radiator affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
MTC - Corporate Logo
ES#:
2091404
Mfg#:
17111436264
Ships in 7 Business Days
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Auxillary Fan Switch

ES#4460464 - 3148210000 - Auxillary Fan Switch - Also known as the coolant temperature sending unit, comes with related o-ring - Meyle - BMW

Also known as the coolant temperature sending unit, comes with related o-ring affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Mounted in lower radiator hose, controls operation of auxiliary fan

Brand:
Meyle - Corporate Logo
ES#:
4460464
Mfg#:
3148210000
Ships on Oct 14, 2026
$18.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Support Bracket

ES#4659038 - 17117514402 - Radiator Support Bracket - Rein - BMW

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#:
4659038
Mfg#:
17117514402
Back Ordered
$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Level Sensor

ES#1599539 - 61318360855 - Coolant Level Sensor - Monitors the coolant level in the expansion tank - Vemo - BMW

Monitors the coolant level in the expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vemo - Corporate Logo
ES#:
1599539
Mfg#:
61318360855
Special Order: No Guaranteed ETA
$16.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E46 Heater Hose

ES#2889527 - 64218363198 - E46 Heater Hose - Water valve to heater core - Original Equipment Supplier - BMW

Water valve to heater core affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Original Equipment Supplier - Corporate Logo
ES#:
2889527
Mfg#:
64218363198
Ships in 3 Business Days
$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Temperature Sensor

ES#4327627 - 13621433076 - Temperature Sensor - Monitors coolant / oil temperature - Meyle - BMW

Monitors coolant / oil temperature affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
4327627
Mfg#:
13621433076
Ships on Oct 14, 2026
$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Temperature Sensor

ES#2802821 - 13621433076 - Temperature Sensor - Monitors coolant / oil temperature - Meistersatz - BMW

Monitors coolant / oil temperature affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Meistersatz - Corporate Logo
ES#:
2802821
Mfg#:
13621433076
Back Ordered
$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Drain Plug With Housing

ES#4056646 - 17111437360 - Radiator Drain Plug With Housing - Located in the bottom of the radiator - URO - BMW

Located in the bottom of the radiator affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
For vehicles with automatic transmission only

Brand:
URO - Corporate Logo
ES#:
4056646
Mfg#:
17111437360
Back Ordered
Auto Notify
$10.99 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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