Shop Our Clearance Sale - Up To 80% Off FREE SHIPPING on Orders $49+ *exclusions apply
affirm financing terms & conditions

Menu

Call Us330-331-2003 ChatLive Chat Text Us!
0 Shopping Cart
Your Vehicle Clear

BMW Z4 sDrive35is N54 3.0L

    • Audi
    • BMW
    • Mercedes Benz
    • MINI
    • Porsche
    • Volkswagen

Saved Vehicles

My Vehicles
You currently have no stored vehicles.

Recent Vehicles

Recent Vehicles Manage Vehicles

You currently have no recent vehicles.

We'll automatically keep fully selected vehicles here for your convenience.

Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
0
Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
Cancel
0
Sales & Specials
Enter Your Vehicle
affirm financing terms & conditions
garage-red
Your Vehicle BMW Z4 sDrive35is N54 3.0L
Your Vehicle BMW Z4 sDrive35is N54 3.0L
Change Clear

BMW Z4 sDrive35is N54 3.0L Cooling Expansion Tank Parts

Sort By
Filter By
Return to Top

Fluid Level Sensor

ES#260195 - 17137524812 - Fluid Level Sensor - This sensor is used in multiple locations, depending on model: coolant level, washer level, and power steering level - URO - BMW MINI

This sensor is used in multiple locations, depending on model: coolant level, washer level, and power steering level 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#:
260195
Mfg#:
17137524812
In Stock
$10.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Basic Cooling System Upgrade Kit

ES#4759976 - 024797ECS03KT - Basic Cooling System Upgrade Kit - Bulletproof your N54 cooling system! - Assembled By ECS - BMW

Bulletproof your N54 cooling system! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4759976
Mfg#:
024797ECS03KT
Ships on Jul 29, 2026
Auto Notify
ON SALE! SAVE 18%
$637.99

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

$523.17 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Coolant Expansion Tank Cap

ES#4840141 - 17117639020 - Coolant Expansion Tank Cap - Keep that coolant expansion tank sealed - Hamburg Tech - BMW

Keep that coolant expansion tank sealed 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#:
4840141
Mfg#:
17117639020
In Stock
$13.75 USD
Free Shipping
on orders $49 and up

Coolant Expansion Tank Cap

ES#2550027 - 17117521071 - Coolant Expansion Tank Cap - Keep that coolant expansion tank sealed - URO - BMW

Keep that coolant expansion tank sealed 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#:
2550027
Mfg#:
17117521071
In Stock
$18.99

This product was last offered at the strikethrough price on
03-09-2026

$14.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet Coolant Reservoir Cap - Anodized Black

ES#4505863 - CO0LANTCAPBLK - Billet Coolant Reservoir Cap - Anodized Black - Upgrade the visual appeal of your engine bay with Vargas Turbo Technologies' Billet Caps! - Vargas Turbo Technologies - BMW

Upgrade the visual appeal of your engine bay with Vargas Turbo Technologies' Billet Caps! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vargas Turbo Technologies - Corporate Logo
ES#:
4505863
Mfg#:
CO0LANTCAPBLK
Back Ordered
Auto Notify
$79.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Sensor Extension Harness

ES#4364623 - 201-0050 - Coolant Sensor Extension Harness - Allows you to relocate your coolant reservoir or run the 335d reservoir - Precision Raceworks - BMW

Allows you to relocate your coolant reservoir or run the 335d reservoir affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Precision Raceworks - Corporate Logo
ES#:
4364623
Mfg#:
201-0050
In Stock
$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet Coolant Reservoir Cap - Anodized Clear

ES#4505865 - CO0LANTCAPRAW - Billet Coolant Reservoir Cap - Anodized Clear - Upgrade the visual appeal of your engine bay with Vargas Turbo Technologies' Billet Caps! - Vargas Turbo Technologies - BMW

Upgrade the visual appeal of your engine bay with Vargas Turbo Technologies' Billet Caps! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
This coolant cap retains ALL of the factory provisions by simply allowing you to snap the factory pressure-relief into the new Billet Cap

Brand:
Vargas Turbo Technologies - Corporate Logo
ES#:
4505865
Mfg#:
CO0LANTCAPRAW
Ships in 3 Business Days
$78.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Silver Engine Coolant Reservoir Cap

ES#4883004 - 201-0393-SIL - Silver Engine Coolant Reservoir Cap - Functional and stunningly stylish way to add a nice touch to any engine bay! - Precision Raceworks - BMW

Functional and stunningly stylish way to add a nice touch to any engine bay! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Precision Raceworks - Corporate Logo
ES#:
4883004
Mfg#:
201-0393-SIL
Ships in 8 Business Days
$115.99

This product was last offered at the strikethrough price on
01-22-2026

$109.99 USD
Free Shipping
on orders $49 and up

Blue Engine Coolant Reservoir Cap

ES#4883000 - 201-0393-BLU - Blue Engine Coolant Reservoir Cap - Functional and stunningly stylish way to add a nice touch to any engine bay! - Precision Raceworks - BMW

Functional and stunningly stylish way to add a nice touch to any engine bay! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Precision Raceworks - Corporate Logo
ES#:
4883000
Mfg#:
201-0393-BLU
Ships in 8 Business Days
$115.99

This product was last offered at the strikethrough price on
01-22-2026

$109.99 USD
Free Shipping
on orders $49 and up

Carbon Charge Cooler Tank Cap Cover (Gloss)

ES#4904982 - BM-0032 - Carbon Charge Cooler Tank Cap Cover (Gloss) - Take your BMW to the next level with the AutoTecknic Dry Carbon Fiber Charge Cooler Reservoir Cap Cover. - AUTOTECKNIC - BMW

Take your BMW to the next level with the AutoTecknic Dry Carbon Fiber Charge Cooler Reservoir Cap Cover. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
AUTOTECKNIC - Corporate Logo
ES#:
4904982
Mfg#:
BM-0032
In Stock
$64.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Grommet

ES#177738 - 64126910076 - Expansion Tank Grommet - Used in the expansion tank - Genuine BMW - BMW MINI

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

Brand:
Genuine BMW - Corporate Logo
ES#:
177738
Mfg#:
64126910076
In Stock
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#2586401 - 17137607482 - Coolant Expansion Tank - Includes level sensor - Vaico - BMW

Includes level sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2586401
Mfg#:
17137607482
In Stock at Vendor
$152.99

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

$148.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

MMX 90mm Billet Coolant Expansion Tank Cap | BMW

Dress Up Your BMW's Engine Bay With MMX's Billet Expansion Tank Cap! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
MMX Performance - Corporate Logo
ES#:
4809889
Mfg#:
MMR03-1502
Ships in 1 Business Day
$127.99 USD
Free Shipping
on orders $49 and up

Fluid Level Sensor

ES#3673297 - 17137553919 - Fluid Level Sensor - This sensor is used in multiple locations, depending on model: coolant level, washer level, and power steering level - JL Germany - BMW

This sensor is used in multiple locations, depending on model: coolant level, washer level, and power steering level affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
JL Germany
ES#:
3673297
Mfg#:
17137553919
In Stock
$14.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank Cap

ES#2801130 - 17117639020 - Coolant Expansion Tank Cap - Keep that coolant expansion tank sealed - Meistersatz - BMW

Keep that coolant expansion tank sealed affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Meistersatz - Corporate Logo
ES#:
2801130
Mfg#:
17117639020
Back Ordered
$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Black Engine Coolant Reservoir Cap

ES#4882996 - 201-0393-BLK - Black Engine Coolant Reservoir Cap - Functional and stunningly stylish way to add a nice touch to any engine bay! - Precision Raceworks - BMW

Functional and stunningly stylish way to add a nice touch to any engine bay! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Precision Raceworks - Corporate Logo
ES#:
4882996
Mfg#:
201-0393-BLK
Ships in 9 Business Days
$115.99

This product was last offered at the strikethrough price on
01-22-2026

$109.99 USD
Free Shipping
on orders $49 and up

More About Cooling Expansion Tank Parts

A common source of overheating problems is a broken or leaking coolant expansion tank. Replace it with an OEM coolant expansion tank or quality aftermarket expansion tank to prevent future woes.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

Terms of Use Privacy Policy ECS Tuning is part of Enthusiast Auto Holdings