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BMW E46 Engine Cooling Parts

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BMW E30 / E36 / E46 Offset Lower Radiator Mounts

ES#4845983 - PFF5-4652H - BMW E30 / E36 / E46 Offset Lower Radiator Mounts - These mounts help secure the radiator, while their offset design offers more flexibility in fitting upgraded or custom radiators, enhancing overall cooling system performance. - Powerflex - BMW

These mounts help secure the radiator, while their offset design offers more flexibility in fitting upgraded or custom radiators, enhancing overall cooling system performance.

Brand:
Powerflex - Corporate Logo
ES#:
4845983
Mfg#:
PFF5-4652H
In Stock
$42.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator - Manual

ES#2570204 - 17119071517 - Radiator - Manual - Replace your leaking radiator. - Nissens - BMW

Replace your leaking radiator. We Price Match - Give Us A Call or Chat!
For vehicles with manual transmission only and production date from 05/2005

Brand:
Nissens - Corporate Logo
ES#:
2570204
Mfg#:
17119071517
Ships in 1 Business Day
$184.70

This product was last offered at the strikethrough price on
05-09-2026

$170.94 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Anti-Freeze / Coolant - 1.5 Liter

ES#1912 - AF G001100 - Anti-Freeze / Coolant - 1.5 Liter - Blue Pentofrost Antifreeze coolant in color. Meets VAG G11 and MB 325.0 standards. - Pentosin - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Blue Pentofrost Antifreeze coolant in color. Meets VAG G11 and MB 325.0 standards.

Brand:
Pentosin - Corporate Logo
ES#:
1912
Mfg#:
AF G001100
In Stock
ON SALE!
$14.99

This product was last offered at the strikethrough price on
09-01-2026

$14.24 USD
Free Shipping
on orders $49 and up

Aluminum Water Pipe

ES#4017792 - 11537502525PRM - Aluminum Water Pipe - Connects return hose to engine block - URO Premium - BMW

Connects return hose to engine block 2X Entries Into Our F80 M3 Sweepstakes

Brand:
URO Premium - Corporate Logo
ES#:
4017792
Mfg#:
11537502525PRM
In Stock
$71.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Replacement Kit - Level 2

ES#2825779 - 17117573781OEKT1 - Expansion Tank Replacement Kit - Level 2 - More advanced expansion tank replacement kit - Genuine BMW - BMW

More advanced expansion tank replacement kit

Brand:
Genuine BMW - Corporate Logo
ES#:
2825779
Mfg#:
17117573781OEKT1
Ships in 1-2 days
$589.99

This product was last offered at the strikethrough price on
07-10-2026

$499.99 USD
Free Shipping
This product is lifetime replacement eligible Partial 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
$149.99

This product was last offered at the strikethrough price on
07-16-2026

$99.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

E46 M3 Coolant hose

ES#177980 - 64216902678 - E46 M3 Coolant hose - Runs from block to heater core valve - Genuine BMW - BMW

Runs from block to heater core valve

Brand:
Genuine BMW - Corporate Logo
ES#:
177980
Mfg#:
64216902678
Ships in 1-2 days
2% off MSRP

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

$55.99

This product was last offered at the strikethrough price on
09-04-2026

$54.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pipe

ES#25060 - 11537502000 - Water Pipe - From water pump to expansion tank hose - Genuine BMW - BMW

From water pump to expansion tank hose

Brand:
Genuine BMW - Corporate Logo
ES#:
25060
Mfg#:
11537502000
Ships in 1-2 days
ON SALE! SAVE 75%
$221.99

This product was last offered at the strikethrough price on
04-05-2026

$54.77 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Mounting Plate

ES#3504760 - 17111436250 - Expansion Tank Mounting Plate - Mounts to the side of the radiator for retaining the expansion tank - Rein - BMW

Mounts to the side of the radiator for retaining the expansion tank 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3504760
Mfg#:
17111436250
In Stock
ON SALE!
$70.99

This product was last offered at the strikethrough price on
08-31-2026

$67.44 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#253026 - 17117573781 - Coolant Expansion Tank - Does not include cap or coolant level sensor - Meyle - BMW
ECS Tuning recommends this product.

Does not include cap or coolant level sensor 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
253026
Mfg#:
17117573781
In Stock
$66.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E46 M3 Radiator Hose - Upper And Lower

ES#4709400 - 11537830715KT - E46 M3 Radiator Hose - Upper And Lower - Both thermostat housing hoses to replace your worn out rubber and brittle plastic connections. - Rein - BMW

Both thermostat housing hoses to replace your worn out rubber and brittle plastic connections. 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4709400
Mfg#:
11537830715KT
Ships in 1 Business Day
ON SALE!
$53.98

This product was last offered at the strikethrough price on
08-31-2026

$51.28 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Cooling System Refresh Kit - Level 2

ES#2063861 - ECSE461711-2 - ECS Cooling System Refresh Kit - Level 2 - A more advanced refresh kit - with aftermarket components, featuring an ECS Aluminum Pulley and GEBA Water Pump - Assembled By ECS - BMW

A more advanced refresh kit - with aftermarket components, featuring an ECS Aluminum Pulley and GEBA Water Pump 10X Entries Into Our F80 M3 Sweepstakes
For vehicles with production date from 09/2002

Brand:
Assembled By ECS - Corporate Logo
ES#:
2063861
Mfg#:
ECSE461711-2
In Stock
ON SALE!
$502.99

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

$461.21 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Radiator - Manual

ES#38234 - 17119071517 - Radiator - Manual - Genuine replacement radiator. - Genuine BMW - BMW

Genuine replacement radiator. For vehicles with manual transmission only and production date from 05/2005

Brand:
Genuine BMW - Corporate Logo
ES#:
38234
Mfg#:
17119071517
Ships in 1-2 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.

$487.99

This product was last offered at the strikethrough price on
09-04-2026

$459.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Radiator

ES#38235 - 17119071518 - Radiator - Genuine replacement radiator. - Genuine BMW - BMW

Genuine replacement radiator. For vehicles with manual transmission only

Brand:
Genuine BMW - Corporate Logo
ES#:
38235
Mfg#:
17119071518
Ships in 1-2 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.

$487.99

This product was last offered at the strikethrough price on
09-04-2026

$459.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Thermostat W/ Housing & Sensor

ES#5435334 - MMTS-E46-99E - Thermostat W/ Housing & Sensor - Designed to restore original cooling performance, making it an essential component for routine maintenance or emergency repair. - Mishimoto - BMW

Designed to restore original cooling performance, making it an essential component for routine maintenance or emergency repair.

Brand:
Mishimoto - Corporate Logo
ES#:
5435334
Mfg#:
MMTS-E46-99E
In Stock
$91.99 USD
Free Shipping
on orders $49 and up

Heater Hard Line Replacement & Upgrade Kit

Includes everything needed to replace heater coolant hard lines 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
5435247
Mfg#:
11531705210KT1
Ships on Nov 12, 2026
Auto Notify
$237.99

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

$225.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial 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

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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