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BMW E90 335i N55 3.0L

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BMW E90 335i N55 3.0L Cooling Expansion Tank Parts

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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! 2X Entries For Our 25th Anniversary Sweepstakes!

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 Expansion Tank

ES#3177978 - 17137640515 - Coolant Expansion Tank - Includes level sensor - Hudson - BMW

Includes level sensor

Brand:
Hudson - Corporate Logo
ES#:
3177978
Mfg#:
17137640515
Ships in 3 Business Days
$67.99 USD
Free Shipping
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!

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

Expansion Tank Grommet

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

Used in the expansion tank

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

Expansion Tank Replacement Kit

ES#2713373 - 17137640515KT - 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#:
2713373
Mfg#:
17137640515KT
In Stock
$225.99

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

$222.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Carbon Coolant Expansion Tank Cap Cover (Gloss Carbon)

ES#4900217 - BM-0803-GC - Carbon Coolant Expansion Tank Cap Cover (Gloss Carbon) - Upgrade to AutoTecknics Pre-Preg Carbon Fiber Coolant Expansion Tank Cap Cover and give your BMW the exclusive, high-performance look it deserves. - AUTOTECKNIC - BMW

Upgrade to AutoTecknic’s Pre-Preg Carbon Fiber Coolant Expansion Tank Cap Cover and give your BMW the exclusive, high-performance look it deserves.

Brand:
AUTOTECKNIC - Corporate Logo
ES#:
4900217
Mfg#:
BM-0803-GC
Ships in 7 Business Days
$74.99 USD
Free Shipping
on orders $49 and up

Coolant Expansion Tank With Cap - E8x/E9x N55

ES#5374538 - EPK0131 - Coolant Expansion Tank With Cap - E8x/E9x N55 - Includes level sensor and cap - Rein - BMW

Includes level sensor and cap 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Rein - Corporate Logo
ES#:
5374538
Mfg#:
EPK0131
Ships in 3 Business Days
$104.99 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

Brand:
JL Germany
ES#:
3673297
Mfg#:
17137553919
In Stock
ON SALE!
$14.99

This product was last offered at the strikethrough price on
07-14-2026

$14.54 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank Cap

ES#4328152 - 17117639020 - Coolant Expansion Tank Cap - Keep that coolant expansion tank sealed - Meyle - BMW

Keep that coolant expansion tank sealed 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
4328152
Mfg#:
17117639020
Ships on Nov 30, 2026
$16.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Carbon Coolant Expansion Tank Cap Cover (Red Carbon)

ES#4900218 - BM-0803-RC - Carbon Coolant Expansion Tank Cap Cover (Red Carbon) - Upgrade to AutoTecknics Pre-Preg Carbon Fiber Coolant Expansion Tank Cap Cover in Red Carbon and give your BMW the exclusive, high-performance look it deserves. - Autotech - BMW

Upgrade to AutoTecknic’s Pre-Preg Carbon Fiber Coolant Expansion Tank Cap Cover in Red Carbon and give your BMW the exclusive, high-performance look it deserves.

Brand:
Autotech - Corporate Logo
ES#:
4900218
Mfg#:
BM-0803-RC
Ships in 7 Business Days
$74.99 USD
Free Shipping
on orders $49 and up

Coolant Expansion Tank

ES#4343543 - 17137590626 - Coolant Expansion Tank - Includes sensor - Febi - BMW

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

Brand:
Febi - Corporate Logo
ES#:
4343543
Mfg#:
17137590626
In Stock at Vendor
$123.99

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

$120.99 USD
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!

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

Coolant Expansion Tank Cap

Keep your BMW’s cooling system performing exactly as intended with this premium replacement coolant expansion tank cap from Febi Bilstein. 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Febi - Corporate Logo
ES#:
5491375
Mfg#:
46221
Special Order: No Guaranteed ETA
$19.99 USD
Free Shipping
on orders $49 and up

Coolant Expansion Tank

ES#5480832 - 314 223 0004 - Coolant Expansion Tank - Designed to meet strict original equipment specifications, this tank is an essential preventive maintenance item or an instant fix for a cracked reservoir. - Meyle - BMW

Designed to meet strict original equipment specifications, this tank is an essential preventive maintenance item or an instant fix for a cracked reservoir. 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Meyle - Corporate Logo
ES#:
5480832
Mfg#:
314 223 0004
Ships on Oct 30, 2026
Auto Notify
$75.99 USD
Free Shipping
on orders $49 and up

Fluid Level Sensor

ES#4328150 - 17117546548 - Fluid Level Sensor - This sensor is used in multiple locations, depending on model: coolant level, washer level, and power steering level - Meyle - BMW

This sensor is used in multiple locations, depending on model: coolant level, washer level, and power steering level 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
4328150
Mfg#:
17117546548
Special Order: No Guaranteed ETA
$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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.

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