BMW Coolant Expansion Tanks for BMW 5 Series G30 (2017+)

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On certain models, namely E36, E46, and E90, the factory BMW expansion tank is prone to either breaking at connection points or blowing apart altogether. If you're starting to feel like your expansion tank is on borrowed time, it's probably time to replace with either a direct OE replacement, or strengthen your cooling setup with an aluminum expansion tank - we offer numerous performance upgrades for your expansion tank. Especially if you're someone who likes to track your BMW, we recommend upgrading your expansion tank to avoid ruining your track day.
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OE BMW Coolant Expansion Tank Cap - E90 E92 F30 F32 F10 F12 F06
OE BMW Coolant Expansion Tank Cap - E90 E92 F30 F32 F10 F12 F06 ...
Genuine BMW - Corporate Logo
T#:19454
Part#: 17117639020
In Stock
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$ 23.95 USD
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Sale - Save 5% $ 25.21
$ 23.95 USD
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This radiator expansion tank cap is used most BMW's from 2006+. It is a common failure item. When this item fails, it cannot hold pressure which results in your BMW overheating. If you are overhauling your coolant system, now is the time to consider preventative replacing this cap. It is also referred to as the coolant reservoir cap.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
2008-2013 E82 BMW 128i 135i 135is 1M Coupe
2014+ F22 BMW 228i 228i xDrive M235i M235i xDrive
2012+ F30 BMW 320i 320i xDrive 328d 328d xDrive 328i 328i xDrive 335i 335i xDrive - Sedan
2013+ F31 BMW 328i xDrive 328d xDrive - Wagon
2014+ F34 BMW 328i xDrive GT, 335i xDrive GT - Gran Tourismo
2013+ F32 BMW 428i 428i xDrive 435i 435i xDrive - Coupe
2013+ F33 BMW 428i Convertible 428i xDrive Convertible 435i Convertible 435i xDrive Convertible- Convertible
2014+ F36 BMW 428i Gran Coupe 428i xDrive Gran Coupe 435i Gran Coupe 435i xDrive Gran Coupe
2014+ F07 BMW 535i GT, 535i xDrive GT
2012+ F10 BMW 528i 528i xDrive 535i 535i xDrive 535d 535d xDrive
2011+ F10 BMW 528i 528i xDrive 535i 535i xDrive 535d 535d xDrive
2012+ F12 BMW 640i 640i xDrive 650i 650i xDrive
2013+ F06 BMW 640i Gran Coupe 640i xDrive Gran Coupe 650i Gran Coupe 650i xDrive Gran Coupe
2009+ F01 BMW 740i 740li 740li xDrive 740ld xDrive 750i 750li 750i xDrive 750li xDrive 760li
2013+ E84 BMW X1 sDrive28i X1 xDrive28i X1 xDrive35i
2011+ F25 BMW X3 xDrive28i X3 xDrive28d X3 xDrive35i
2015+ F26 BMW X4 xDrive28i X4 xDrive35i
2007-2013 E70 BMW X5 3.0si X5 4.8i X5 xDrive30i X5 xDrive35d X5 xDrive35i X5 xDrive48i X5 xDrive50i X5M
2014+ F15 BMW X5 sDrive35i X5 xDrive35d X5 xDrive35i X5 xDrive50i
2008-2014 E71 BMW X6 xDrive35i X6 xDrive50i X6M
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Coolant Expansion Tank Cap - E9x M3, E60 E63 F01 E70 E71
Coolant Expansion Tank Cap - E9x M3, E60 E63 F01 E70 E71
Genuine BMW - Corporate Logo
T#:194502
Part#: 17117639021
In Stock
24% off MSRP $ 32.78
$ 24.99 USD
Free Shipping on orders $49 and up
Add to Wish List
24% off MSRP $ 32.78
$ 24.99 USD
Free Shipping on orders $49 and up
Add to Wish List
This radiator expansion tank cap is used most BMW's from 2006+. It is a common failure item. When this item fails, it cannot hold pressure which results in your BMW overheating. If you are overhauling your coolant system, now is the time to consider preventative replacing this cap. It is also referred to as the coolant reservoir cap.
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Genuine BMW Engine Coolant Expansion Tank Cap - 17135A1BD89
Genuine BMW Engine Coolant Expansion Tank Cap - 17135A1BD89
Genuine BMW - Corporate Logo
T#:29699315
Part#: 17135A1BD89
In Stock
Sale - Save 5% $ 28.99
$ 27.41 USD
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Sale - Save 5% $ 28.99
$ 27.41 USD
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Genuine BMW Cover Lid
This item fits the following BMW Chassis:
E70 X5M,E71 X6M,E70 X5,E71 X6,F01,F02,F06,F10,F12,F13,F15,F16,F30,F80 M3,F82 M4,F83,i3i12

Expansion Tank
Expansion Tank
Genuine BMW - Corporate Logo
T#:7514125
Part#: 17139846642
In Stock
7% off MSRP $ 186.00
$ 172.99 USD
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7% off MSRP $ 186.00
$ 172.99 USD
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Genuine MINI Engine Coolant Expansion Tank Cap - 17135A1BD89
Genuine MINI Engine Coolant Expansion Tank Cap - 17135A1BD89 ...
Genuine MINI - Corporate Logo
T#:28337931
Part#: 17135A1BD89
In Stock
Sale - Save 7% $ 25.99
$ 24.20 USD
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Sale - Save 7% $ 25.99
$ 24.20 USD
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Genuine BMW Intercooler Expansion Tank - N63 4.4L
Genuine BMW Intercooler Expansion Tank - N63 4.4L
Genuine BMW - Corporate Logo
T#:191410
Part#: 17137647281
Ships Jun 30, 2025
Sale - Save 5% $ 140.99
$ 133.44 USD
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Sale - Save 5% $ 140.99
$ 133.44 USD
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Genuine BMW Expansion Tank -
This item fits the following BMW Chassis:
E71,F01,F02,F06,F10,F12,F13

Fits BMW Engines including:
N63,N63N

Febi Coolant Expansion Tank Cap - E90 E92 F30 F32 F10 F12 F06
Febi Coolant Expansion Tank Cap - E90 E92 F30 F32 F10 F12 F06 ...
2X Entries For Our Spin To Win Sweepstakes! We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:340719
Part#: 17117639020
In Stock
$ 13.99 USD
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Add to Wish List
$ 13.99 USD
Free Shipping on orders $49 and up
Add to Wish List
This radiator expansion tank cap is used most BMW's from 2006+. It is a common failure item. When this item fails, it cannot hold pressure which results in your BMW overheating. If you are overhauling your coolant system, now is the time to consider preventative replacing this cap. It is also referred to as the coolant reservoir cap. 

Since the late 1800’s Febi has been fabricating replacement metal parts. This history is self evident in the quality and vast amount of applications they service. With more than 34,000 repair solutions for cars and commercial vehicles you can be sure Febi has you covered.

This item fits the following BMWs:  
2008-2013  E82 BMW  128i 135i 135is 1M Coupe 
2014+  F22 BMW  228i 228i xDrive M235i M235i xDrive 
2012+  F30 BMW  320i 320i xDrive 328d 328d xDrive 328i 328i xDrive 335i 335i xDrive - Sedan 
2013+  F31 BMW  328i xDrive 328d xDrive - Wagon 
2014+  F34 BMW  328i xDrive GT, 335i xDrive GT - Gran Tourismo 
2013+  F32 BMW  428i 428i xDrive 435i 435i xDrive - Coupe 
2013+  F33 BMW  428i Convertible 428i xDrive Convertible 435i Convertible 435i xDrive Convertible- Convertible 
2014+  F36 BMW  428i Gran Coupe 428i xDrive Gran Coupe 435i Gran Coupe 435i xDrive Gran Coupe 
2014+  F07 BMW  535i GT, 535i xDrive GT 
2012+  F10 BMW  528i 528i xDrive 535i 535i xDrive 535d 535d xDrive 
2011+  F10 BMW  528i 528i xDrive 535i 535i xDrive 535d 535d xDrive 
2012+  F12 BMW  640i 640i xDrive 650i 650i xDrive 
2013+  F06 BMW  640i Gran Coupe 640i xDrive Gran Coupe 650i Gran Coupe 650i xDrive Gran Coupe 
2009+  F01 BMW  740i 740li 740li xDrive 740ld xDrive 750i 750li 750i xDrive 750li xDrive 760li 
2013+  E84 BMW  X1 sDrive28i X1 xDrive28i X1 xDrive35i 
2011+  F25 BMW  X3 xDrive28i X3 xDrive28d X3 xDrive35i 
2015+  F26 BMW  X4 xDrive28i X4 xDrive35i 
2007-2013  E70 BMW  X5 3.0si X5 4.8i X5 xDrive30i X5 xDrive35d X5 xDrive35i X5 xDrive48i X5 xDrive50i X5M 
2014+  F15 BMW  X5 sDrive35i X5 xDrive35d X5 xDrive35i X5 xDrive50i 
2008-2014  E71 BMW  X6 xDrive35i X6 xDrive50i X6M 
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Rein Expansion Tank Cap
Rein Expansion Tank Cap
2X Entries For Our Spin To Win Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:384807
Part#: 17117639021
In Stock
$ 14.99 USD
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$ 14.99 USD
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Cap for plastic expansion tank
Expansion Tank - Priced Each
Expansion Tank - Priced Each
We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:639209
Part#: 17138610656
Ships in 1 Business Day
Sale - Save 3% $ 96.99
$ 94.00 USD
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Sale - Save 3% $ 96.99
$ 94.00 USD
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Replace your leaky coolant tank!
Genuine BMW Coolant Expansion Tank
Genuine BMW Coolant Expansion Tank
Genuine BMW - Corporate Logo
T#:21637227
Part#: 17135A7BC90
Ships Jun 30, 2025
7% off MSRP $ 186.00
$ 172.99 USD
Free Shipping on orders $49 and up
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7% off MSRP $ 186.00
$ 172.99 USD
Free Shipping on orders $49 and up
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Coolant Expansion Tank Cap
Coolant Expansion Tank Cap
Meistersatz - Corporate Logo
T#:379621
Part#: 17117639020
Ships Jul 21, 2025
$ 16.14 USD
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$ 16.14 USD
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Quality aftermarket coolant expansion tank cap.
Intercooler Expansion Tank
Intercooler Expansion Tank
2X Entries For Our Spin To Win Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:584477
Part#: 17137647281
Ships Jul 21, 2025
$ 63.53 USD
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$ 63.53 USD
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Meistersatz CAP- EXPANSION TANK
Meistersatz CAP- EXPANSION TANK
Meistersatz - Corporate Logo
T#:1195781
Part#: 17117639021
Ships Jul 21, 2025
$ 12.99 USD
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$ 12.99 USD
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Coolant Expansion Tank Cap
Coolant Expansion Tank Cap
Bremmen Parts - Corporate Logo
T#:36032339
Part#: 17117639020
Ships on Aug 11, 2025
New Item
$ 13.99 USD
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$ 13.99 USD
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Expansion Tank
Expansion Tank
2X Entries For Our Spin To Win Sweepstakes! We Price Match - Give Us A Call or Chat!
Meyle - Corporate Logo
T#:36201637
Part#: 17139846642
Special Order: No Guaranteed ETA
New Item
$ 149.99 USD
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$ 149.99 USD
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The Expansion Tank plays a crucial role in your vehicle’s cooling system, managing coolant expansion and contraction caused by temperature changes. It provides additional space for the coolant, preventing overheating and maintaining the cooling system's efficiency. **Key Benefits:** - **Prevents Overheating:** Regulates coolant expansion and pressure to maintain stable engine temperatures. - **Durable Construction:** Built with heat-resistant materials to endure extreme engine conditions. - **OEM Compatibility:** Precisely designed to meet or exceed original equipment standards for an easy, seamless replacement. - **Leak-Proof Design:** Features a secure seal to prevent leaks and ensure optimal system performance. - **Enhanced Engine Longevity:** Promotes proper coolant circulation, reducing engine wear and tear. The Expansion Tank is an essential component for sustaining your vehicle's cooling system and ensuring reliable engine performance over time.
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Rein - Expansion Tank G30 540iX, G32 640iX, G11 740i
Rein - Expansion Tank G30 540iX, G32 640iX, G11 740i
2X Entries For Our Spin To Win Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:33946948
Part#: 17139846642
Special Order: No Guaranteed ETA
$ 84.95 USD
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$ 84.95 USD
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The Expansion Tank is an essential part of your vehicle’s cooling system, designed to accommodate the expansion of coolant as it heats up during engine operation. This high-quality tank helps regulate coolant pressure, preventing overheating and ensuring optimal engine performance. Built to meet or exceed OEM standards, this expansion tank is crafted from durable, heat-resistant materials to provide long-lasting reliability. It offers a direct fit for a wide range of European vehicles, ensuring easy installation.

  • Prevents Overheating: Manages coolant expansion to maintain consistent engine temperature.
  • Durable Construction: Made from premium, heat-resistant materials to ensure long-term durability.
  • OEM Quality Fit: Designed for a precise fit, meeting or exceeding original equipment specifications.
  • Leak-Proof Design: Provides a secure seal to prevent coolant loss and maintain system efficiency.
  • Easy Installation: Direct replacement part, compatible with a variety of European vehicle models.

Find the Rein Expansion Tank at Turner Motorsport for top-quality replacement parts and reliable performance.

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