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BMW E90 335i N54 3.0L

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BMW E90 335i N54 3.0L Cooling System Refresh Kits

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N20/N52/N54 Heavy Duty Aluminum Expansion Tank Kit

ES#4635669 - 008378LA02 - N20/N52/N54 Heavy Duty Aluminum Expansion Tank Kit - As expansion tanks age, they are prone to cracking or even exploding. Replace your factory plastic coolant reservoir with a Turner Heavy Duty aluminum tank for durability and piece of mind! - Turner Motorsport - BMW
ECS Tuning recommends this product.

As expansion tanks age, they are prone to cracking or even exploding. Replace your factory plastic coolant reservoir with a Turner Heavy Duty aluminum tank for durability and piece of mind! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Turner Motorsport - Corporate Logo
ES#:
4635669
Mfg#:
008378LA02
In Stock
ON SALE! SAVE 20%
$469.99

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

$375.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump And Thermostat

ES#4820923 - 11517588885KT - Water Pump And Thermostat - Featuring Hamburg Technic Coolant Pump & Thermostat with hardware - Hamburg Tech - BMW

Featuring Hamburg Technic Coolant Pump & Thermostat with hardware 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#:
4820923
Mfg#:
11517588885KT
In Stock
$459.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Cooling System Refresh Kit - Level 1

ES#2597785 - 11517588885RKT - ECS Cooling System Refresh Kit - Level 1 - An entry level cooling refresh kit - with OEM & high quality aftermarket components - Assembled By ECS - BMW

An entry level cooling refresh kit - with OEM & high quality aftermarket components affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with manual transmission only

Brand:
Assembled By ECS - Corporate Logo
ES#:
2597785
Mfg#:
11517588885RKT
In Stock
ON SALE! SAVE 25%
$710.99

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

$536.23 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

ECS Cooling System Refresh Kit - Level 3

ES#2739954 - 11537549476RKT3 - ECS Cooling System Refresh Kit - Level 3 - Everything you need to totally service your cooling system, including a radiator and belt service - Genuine BMW - BMW

Everything you need to totally service your cooling system, including a radiator and belt service affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with manual transmission only

Brand:
Genuine BMW - Corporate Logo
ES#:
2739954
Mfg#:
11537549476RKT3
Ships in 1-2 days
$2593.99

This product was last offered at the strikethrough price on
06-02-2026

$2591.99 USD
This product is lifetime replacement eligible Partial Replacement

ECS Cooling System Refresh Kit - Level 1

ES#2597786 - 11537549476RKT1 - ECS Cooling System Refresh Kit - Level 1 - An entry level cooling refresh kit - with high quality OEM & aftermarket components - Assembled By ECS - BMW

An entry level cooling refresh kit - with high quality OEM & aftermarket components affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with automatic or DCT transmission only

Brand:
Assembled By ECS - Corporate Logo
ES#:
2597786
Mfg#:
11537549476RKT1
In Stock
ON SALE! SAVE 24%
$704.77

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

$532.38 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

ECS Cooling System Refresh Kit - Level 2

ES#2597740 - 17117547059KT - ECS Cooling System Refresh Kit - Level 2 - A more advanced refresh kit - with with all cooling system hoses and accessory belt - Genuine BMW - BMW

A more advanced refresh kit - with with all cooling system hoses and accessory belt affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with automatic transmission only

Brand:
Genuine BMW - Corporate Logo
ES#:
2597740
Mfg#:
17117547059KT
Ships in 1-2 days
$1782.99

This product was last offered at the strikethrough price on
06-02-2026

$1780.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

ECS Cooling System Refresh Kit - Level 1

ES#2090729 - ECSE90N54CRKT - ECS Cooling System Refresh Kit - Level 1 - An entry level cooling refresh kit - with OEM components - Genuine BMW - BMW

An entry level cooling refresh kit - with OEM components affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with automatic transmission only

Brand:
Genuine BMW - Corporate Logo
ES#:
2090729
Mfg#:
ECSE90N54CRKT
Ships in 1-2 days
$1518.99

This product was last offered at the strikethrough price on
03-30-2026

$1514.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

ECS Cooling System Refresh Kit - Level 1

ES#2090728 - ECSE90N54CRKT - ECS Cooling System Refresh Kit - Level 1 - An entry level cooling refresh kit - with OEM components - Genuine BMW - BMW

An entry level cooling refresh kit - with OEM components affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with manual transmission only

Brand:
Genuine BMW - Corporate Logo
ES#:
2090728
Mfg#:
ECSE90N54CRKT
Ships in 1-2 days
$1558.99

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

$1555.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

ECS Cooling System Refresh Kit - Level 2

ES#2597737 - 11537549476RKT - ECS Cooling System Refresh Kit - Level 2 - A more advanced refresh kit - with with all cooling system hoses and accessory belt - Genuine BMW - BMW

A more advanced refresh kit - with with all cooling system hoses and accessory belt affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with manual transmission only

Brand:
Genuine BMW - Corporate Logo
ES#:
2597737
Mfg#:
11537549476RKT
Ships in 1-2 days
$1823.99

This product was last offered at the strikethrough price on
06-02-2026

$1821.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

ECS Cooling System Refresh Kit - Level 3

ES#2739953 - 17117547059KT2 - ECS Cooling System Refresh Kit - Level 3 - Everything you need to totally service your cooling system, including a radiator and belt service - Genuine BMW - BMW

Everything you need to totally service your cooling system, including a radiator and belt service affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with automatic transmission only

Brand:
Genuine BMW - Corporate Logo
ES#:
2739953
Mfg#:
17117547059KT2
Ships in 1-2 days
$2552.99

This product was last offered at the strikethrough price on
06-02-2026

$2550.99 USD
This product is lifetime replacement eligible Partial Replacement

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