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BMW E90 325i N52 3.0L

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BMW E90 325i N52 3.0L Engine Cooling Parts

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N52 High-Flow Water Pump Upgrade - With Aluminum Water Pump

ES#5425472 - 044952LA04AKT - N52 High-Flow Water Pump Upgrade - With Aluminum Water Pump - Easily upgrade your N52 with our bolt-in 400W N54 water pump conversion that doubles overall flow and improves cooling system efficiency. - ECS - BMW

Easily upgrade your N52 with our bolt-in 400W N54 water pump conversion that doubles overall flow and improves cooling system efficiency. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
5425472
Mfg#:
044952LA04AKT
In Stock
$597.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Vent Hose

ES#2207030 - 17127618510 - Expansion Tank Vent Hose - Connects to the top of the expansion tank and the upper radiator hose - Genuine BMW - BMW

Connects to the top of the expansion tank and the upper radiator hose

Brand:
Genuine BMW - Corporate Logo
ES#:
2207030
Mfg#:
17127618510
Ships in 3 Business Days
6% off MSRP

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

$64.99

This product was last offered at the strikethrough price on
08-21-2026

$60.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pipe with Aluminum Flange

ES#3569990 - 11537545890 - Water Pipe with Aluminum Flange - Connects from the top of the thermostat housing to the engine block - URO Premium - BMW

Connects from the top of the thermostat housing to the engine block 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
URO Premium - Corporate Logo
ES#:
3569990
Mfg#:
11537545890
In Stock
$27.95

This product was last offered at the strikethrough price on
03-26-2026

$27.58 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ultimate Performance Water Pump And Thermostat Kit

ES#4172081 - 11517586925KT16 - Ultimate Performance Water Pump And Thermostat Kit - Includes a 74c race thermostat, water pump, and ECS silicone hoses - Assembled By ECS - BMW

Includes a 74c race thermostat, water pump, and ECS silicone hoses 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with plastic thermostat housing

Brand:
Assembled By ECS - Corporate Logo
ES#:
4172081
Mfg#:
11517586925KT16
Ships in 1-2 days
ON SALE!
$1128.54 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Coolant Expansion Tank

ES#2966742 - 17137640514 - Coolant Expansion Tank - Includes level sensor - URO - BMW

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

Brand:
URO - Corporate Logo
ES#:
2966742
Mfg#:
17137640514
In Stock
$60.74 USD
Free Shipping
on orders $49 and up

8 Piece Fluid Line Stopper Kit

ES#2748908 - 005939SCH01A - 8 Piece Fluid Line Stopper Kit - This kit contains 2 of each size Shark type clamps designed to make a temporary seal on the end of an open line. Includes clamps with 5/16",3/8" and 1/2" open slot. Also contains double seal clamps for banjo style fittings. - Schwaben - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

This kit contains 2 of each size Shark type clamps designed to make a temporary seal on the end of an open line. Includes clamps with 5/16",3/8" and 1/2" open slot. Also contains double seal clamps for banjo style fittings. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Schwaben - Corporate Logo
ES#:
2748908
Mfg#:
005939SCH01A
In Stock
ON SALE! SAVE 23%
$54.99

This product was last offered at the strikethrough price on
04-26-2026

$42.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Water Pump And Thermostat Kit

ES#2804557 - 11517586925KT9 - Performance Water Pump And Thermostat Kit - Includes a 74c race thermostat - Featuring a Pierburg pump - Assembled By ECS - BMW

Includes a 74c race thermostat - Featuring a Pierburg pump 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with plastic thermostat housing

Brand:
Assembled By ECS - Corporate Logo
ES#:
2804557
Mfg#:
11517586925KT9
In Stock
$527.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Coolant Expansion Tank - With Cap

ES#3560011 - 17137640514 - Coolant Expansion Tank - With Cap - Includes Level Sensor & Cap - Hamburg Tech - BMW

Includes Level Sensor & Cap

Brand:
Hamburg Tech - Corporate Logo
ES#:
3560011
Mfg#:
17137640514
In Stock
$79.95 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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

Performance Water Pump And Thermostat Kit

ES#2804283 - 11517586925KT6 - Performance Water Pump And Thermostat Kit - Includes a 74c race thermostat - Featuring a Genuine BMW pump - Assembled By ECS - BMW

Includes a 74c race thermostat - Featuring a Genuine BMW pump 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with plastic thermostat housing

Brand:
Assembled By ECS - Corporate Logo
ES#:
2804283
Mfg#:
11517586925KT6
Ships in 1-2 days
$920.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Auxiliary Fan Switch

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

Comes with related o-ring

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

Expansion Tank Replacement Kit

ES#2581924 - N524EXPOEKT - Expansion Tank Replacement Kit - Includes everything you need to bolt on a brand new expansion tank - Genuine BMW - BMW

Includes everything you need to bolt on a brand new expansion tank

Brand:
Genuine BMW - Corporate Logo
ES#:
2581924
Mfg#:
N524EXPOEKT
In Stock
$230.99

This product was last offered at the strikethrough price on
06-08-2026

$227.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Titanium Coolant Bleeder Screw Upgrade

ES#4883832 - BMS-TCBS - Titanium Coolant Bleeder Screw Upgrade - Titanium coolant bleeder screw upgrade for durability, strength, style, and reliability. - Burger Motorsports - BMW

Titanium coolant bleeder screw upgrade for durability, strength, style, and reliability.

Brand:
Burger Motorsports - Corporate Logo
ES#:
4883832
Mfg#:
BMS-TCBS
Back Ordered
Auto Notify
$25.00 USD
Free Shipping
on orders $49 and up

Coolant Hose Connector

ES#4877194 - 11537545890PRMK - Coolant Hose Connector - Metal Connector vs OEM Plastic - URO Premium - BMW

Metal Connector vs OEM Plastic 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO Premium - Corporate Logo
ES#:
4877194
Mfg#:
11537545890PRMK
In Stock
$24.99 USD
Free Shipping
on orders $49 and up

Radiator Stop-Leak - 250mL

ES#3514566 - 20132 - Radiator Stop-Leak - 250mL - Put a stop to that coolant leak! - Liqui-Moly - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Put a stop to that coolant leak! 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Liqui-Moly - Corporate Logo
ES#:
3514566
Mfg#:
20132
In Stock
29% off MSRP

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

$16.99

This product was last offered at the strikethrough price on
08-21-2026

$11.99 USD
Free Shipping
on orders $49 and up

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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