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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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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 Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Elaplast - Corporate Logo
ES#:
263650
Mfg#:
64218376999
Ships in 5 Business Days
$22.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#2187552 - 17111742231 - Expansion Tank Cap - Replace when performing cooling service. - URO - BMW

Replace when performing cooling service. 2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2187552
Mfg#:
17111742231
Ships in 2 Business Days
$11.99

This product was last offered at the strikethrough price on
08-13-2026

$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Drain Plug

ES#2814066 - 17111437361 - Radiator Drain Plug - Usually stripped out after being removed - Hamburg Tech - BMW

Usually stripped out after being removed Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2814066
Mfg#:
17111437361
Ships in 2 Business Days
$2.99 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 2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!
For vehicles with automatic transmission only

Brand:
URO - Corporate Logo
ES#:
4056646
Mfg#:
17111437360
In Stock
$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rubber Mount - Radiator

ES#2828446 - 17111178412 - Rubber Mount - Radiator - URO Parts is one of the leading manufacturers of high quality direct replacement aftermarket components, covering a wide range of makes and models. - URO - BMW

URO Parts is one of the leading manufacturers of high quality direct replacement aftermarket components, covering a wide range of makes and models. 2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2828446
Mfg#:
17111178412
In Stock
$3.12 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expanding Rivet - Priced Each

ES#205247 - 17111712963 - Expanding Rivet - Priced Each - Fan shroud expanding clamp/rivet - OEM - BMW

Fan shroud expanding clamp/rivet Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
OEM - Corporate Logo
ES#:
205247
Mfg#:
17111712963
In Stock at Vendor
$0.99 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 Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
MTC - Corporate Logo
ES#:
2091404
Mfg#:
17111436264
Ships in 6 Business Days
$9.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Temperature Switch for Control Unit Housing (E-Box) (35 deg. C)

ES#2895858 - 12521741900 - Temperature Switch for Control Unit Housing (E-Box) (35 deg. C) - Vemo - BMW

Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Vemo - Corporate Logo
ES#:
2895858
Mfg#:
12521741900
Ships in 1 Business Day
$40.99

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

$38.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Hose - Upper

ES#2868213 - 17127510952 - Radiator Hose - Upper - A common source of cooling system failure - Febi - BMW

A common source of cooling system failure Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2868213
Mfg#:
17127510952
Back Ordered
$36.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

16" Fan shroud gasket

ES#4147340 - 30130074 - 16" Fan shroud gasket - Provides .25" stand off from radiator - Spal - Audi BMW MINI

Provides .25" stand off from radiator Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Spal - Corporate Logo
ES#:
4147340
Mfg#:
30130074
In Stock at Vendor
$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing Gasket

ES#3676458 - 703307100 - Thermostat Housing Gasket - Needs to be replaced once removed - Victor Reinz - BMW

Needs to be replaced once removed Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Victor Reinz - Corporate Logo
ES#:
3676458
Mfg#:
703307100
In Stock
ON SALE! SAVE 17%
$10.64

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

$8.84 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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 2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
3984619
Mfg#:
17111707777
Ships in 2 Business Days
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Mount

ES#5504564 - 17117514402 - Radiator Mount - Keep your BMWs cooling system properly aligned and secured with a durable, cost-effective replacement upper radiator support bracket from URO Parts. - URO - BMW

Keep your BMW’s cooling system properly aligned and secured with a durable, cost-effective replacement upper radiator support bracket from URO Parts. 2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
URO - Corporate Logo
ES#:
5504564
Mfg#:
17117514402
Ships in 2 Business Days
$6.99 USD
Free Shipping
on orders $49 and up

Coolant Bleeder Screw - Priced Each

ES#4316519 - 17111712788 - Coolant Bleeder Screw - Priced Each - Comes with O-Ring - Bremmen Parts - BMW MINI

Comes with O-Ring 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Located in upper radiator hose

Brand:
Bremmen Parts - Corporate Logo
ES#:
4316519
Mfg#:
17111712788
Ships on Dec 16, 2026
ON SALE! SAVE 39%
$3.99

This product was last offered at the strikethrough price on
09-14-2026

$2.44 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Hose (Upper Left)

ES#4900713 - 17127510952 - Coolant Hose (Upper Left) - Ensure your BMW E46s cooling system stays in top condition with the Meyle Upper Left Coolant Hose. - Meyle - BMW

Ensure your BMW E46’s cooling system stays in top condition with the Meyle Upper Left Coolant Hose. 5X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
4900713
Mfg#:
17127510952
Ships on Dec 10, 2026
$32.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E46 Return Hose

ES#3235132 - 11531436410 - E46 Return Hose - Connects the Expansion Tank to the Water Pipe - Gates - BMW

Connects the Expansion Tank to the Water Pipe Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Gates - Corporate Logo
ES#:
3235132
Mfg#:
11531436410
Ships on Nov 13, 2026
$31.99 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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