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BMW F39 X2 xDrive28i B48 2.0L

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BMW F39 X2 xDrive28i B48 2.0L Cooling Expansion Tank Parts

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Billet Coolant Reservoir Cap - Anodized Blue

ES#4505866 - CO0LANTCAPBLUE - Billet Coolant Reservoir Cap - Anodized Blue - 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#:
4505866
Mfg#:
CO0LANTCAPBLUE
In Stock
$79.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Engine Coolant Expansion Tank Cap

ES#4732065 - 17135A1BD89 - Engine Coolant Expansion Tank Cap - Replacement expansion tank cap for your BMW - Genuine BMW - BMW

Replacement expansion tank cap for your BMW

Brand:
Genuine BMW - Corporate Logo
ES#:
4732065
Mfg#:
17135A1BD89
In Stock
6% off MSRP

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

$34.99

This product was last offered at the strikethrough price on
07-20-2026

$32.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Engine Coolant Expansion Tank Cap

ES#4504673 - 17135A1BD89 - Engine Coolant Expansion Tank Cap - Replacement expansion tank cap for your MINI - Genuine MINI - BMW MINI

Replacement expansion tank cap for your MINI

Brand:
Genuine MINI - Corporate Logo
ES#:
4504673
Mfg#:
17135A1BD89
Ships in 4 Business Days
9% off MSRP

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

$34.99

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

$31.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet Coolant Reservoir Cap - Anodized Red

ES#4505864 - CO0LANTCAPRED - Billet Coolant Reservoir Cap - Anodized Red - 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#:
4505864
Mfg#:
CO0LANTCAPRED
In Stock
$79.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

2 Pin Connector

ES#4772597 - 61132359999 - 2 Pin Connector - Includes connector housing with terminals and seals. Commonly used for the coolant level sensor. - ECS - BMW MINI

Includes connector housing with terminals and seals. Commonly used for the coolant level sensor. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4772597
Mfg#:
61132359999
Ships in 5 Business Days
ON SALE! SAVE 25%
$10.99

This product was last offered at the strikethrough price on
06-13-2026

$8.24 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! 2X Entries For Our 25th Anniversary Sweepstakes!
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 6 Business Days
$78.99 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! 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

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

Engine Coolant Expansion Tank Cap

ES#4941100 - 17132754264 - Engine Coolant Expansion Tank Cap - Replace the expansion tank cap for your MINI / BMW - Bremmen Parts - BMW MINI

Replace the expansion tank cap for your MINI / BMW 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4941100
Mfg#:
17132754264
Ships on Sep 28, 2026
Auto Notify
ON SALE! SAVE 14%
$6.99

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

$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank

ES#2734027 - 17137617362 - Expansion Tank - Mounts towards the back side of the engine bay - Genuine BMW - BMW MINI

Mounts towards the back side of the engine bay

Brand:
Genuine BMW - Corporate Logo
ES#:
2734027
Mfg#:
17137617362
Ships in 4 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.

$151.99

This product was last offered at the strikethrough price on
07-20-2026

$142.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Silver Auxiliary Coolant Reservoir Cap

ES#4882956 - 201-0394-SIL - Silver Auxiliary 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#:
4882956
Mfg#:
201-0394-SIL
Ships in 7 Business Days
$99.99

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

$94.99 USD
Free Shipping
on orders $49 and up

Blue Auxiliary Coolant Reservoir Cap

ES#4882951 - 201-0394-BLU - Blue Auxiliary 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#:
4882951
Mfg#:
201-0394-BLU
Ships in 9 Business Days
$99.99

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

$94.99 USD
Free Shipping
on orders $49 and up

BMW | Cap, coolant tank

ES#4861045 - 17135A1BD89 - BMW | Cap, coolant tank - Vaico - BMW

We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4861045
Mfg#:
17135A1BD89
In Stock at Vendor
$24.99

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

$23.99 USD
Free Shipping
on orders $49 and up

Coolant Expansion Tank

ES#4012749 - 17138687503 - Coolant Expansion Tank - Replace your cracked or faded tank - Genuine MINI - BMW MINI

Replace your cracked or faded tank

Brand:
Genuine MINI - Corporate Logo
ES#:
4012749
Mfg#:
17138687503
Ships in 4 Business Days
7% off MSRP

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

$151.99

This product was last offered at the strikethrough price on
03-05-2026

$140.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Black Auxiliary Coolant Reservoir Cap

ES#4882954 - 201-0394-BLK - Black Auxiliary 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#:
4882954
Mfg#:
201-0394-BLK
Ships in 9 Business Days
$99.99

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

$94.99 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.

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Manufacturer names and/or part numbers are used only for identification purposes.

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