BMW Coolant Expansion Tanks for BMW 3 Series E36 (1992-1998)

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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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Genuine BMW Expansion Tank Cap - E3X / E53 / Z4
Genuine BMW Expansion Tank Cap - E3X / E53 / Z4
Genuine BMW - Corporate Logo
T#:207187
Part#: 17117639022
In Stock
21% off MSRP $ 34.96

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

$ 27.67 USD
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21% off MSRP
$ 34.96

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

$ 27.67 USD
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Genuine BMW Radiator Cap - 2,0Bar
This item fits the following BMW Chassis:
E36 M3,E39 M5,E46 M3,E85 Z4M,E53 48IS,E36,E38,E39,E46,E53 X5,E65,E83 X3,E85 Z4,E86 Z4,F06,F10,F12,F13

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Genuine BMW Coolant Expansion Tank - M50 M52 S50 S52
Genuine BMW Coolant Expansion Tank - M50 M52 S50 S52
Genuine BMW - Corporate Logo
T#:360745
Part#: 17111723520
Ships in 3 Business Days
5% off MSRP $ 215.99

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

$ 205.99 USD
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5% off MSRP
$ 215.99

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

$ 205.99 USD
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Genuine BMW Coolant Level Sensor
Genuine BMW Coolant Level Sensor
For vehicles with production date up to 06/1995 For vehicles with production date up to 03/1996
Genuine BMW - Corporate Logo
T#:360963
Part#: 61311384739
Ships in 3 Business Days
2% off MSRP $ 92.99

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

$ 90.99 USD
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2% off MSRP
$ 92.99

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

$ 90.99 USD
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Genuine BMW Coolant Expansion Tank
Genuine BMW Coolant Expansion Tank
Genuine BMW - Corporate Logo
T#:360743
Part#: 17111712835
Ships in 3 Business Days
5% off MSRP $ 141.99

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

$ 134.99 USD
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5% off MSRP
$ 141.99

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

$ 134.99 USD
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Genuine BMW Coolant Level Sensor
Genuine BMW Coolant Level Sensor
For vehicles with production date from 03/1996 For vehicles with production date from 06/1995
Genuine BMW - Corporate Logo
T#:360964
Part#: 61318360855
Ships in 3 Business Days
2% off MSRP $ 92.99

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

$ 90.99 USD
Free Shipping
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2% off MSRP
$ 92.99

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

$ 90.99 USD
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Expansion Tank - E36
Expansion Tank - E36
Genuine BMW - Corporate Logo
T#:45077
Part#: 16131182156
Ships in 8 Business Days
3% off MSRP $ 342.99

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

$ 331.99 USD
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3% off MSRP
$ 342.99

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

$ 331.99 USD
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Genuine BMW Expansion Tank
This item fits the following BMW Chassis:
E36 M3,E36

Fits BMW Engines including:
M42,M50,S50

OEM Rein Expansion Tank Cap - BMW E32 E34 E36 E38 E39 E46 & More
OEM Rein Expansion Tank Cap - BMW E32 E34 E36 E38 E39 E46 & More ...
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:340541
Part#: 17111742231
Ships in 2 Business Days
Sale - Save 5% $ 17.99

This product was last offered at the strikethrough price on
08-31-2026

$ 17.09 USD
Free Shipping on orders $49 and up
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Sale - Save 5%
$ 17.99

This product was last offered at the strikethrough price on
08-31-2026

$ 17.09 USD
Free Shipping on orders $49 and up
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This radiator expansion tank cap is used most BMW's from 1991-2006. 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 - Level 1 Expansion Tank Replacement Kit - E36, Z3
Genuine BMW - Level 1 Expansion Tank Replacement Kit - E36, Z3 ...
For vehicles with production date from 06/1995 For vehicles with production date from 03/1996
Genuine BMW - Corporate Logo
T#:374427
Part#: 17111723520KT2
Ships in 3 Business Days
$ 400.99

This product was last offered at the strikethrough price on
08-13-2026

$ 395.99 USD
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$ 395.99 USD
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Coolant Expansion Tank With Cap - 17111712835
Coolant Expansion Tank With Cap - 17111712835
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:46616014
Part#: EPK0012
Back Ordered
Sale - Save 8% $ 29.99

This product was last offered at the strikethrough price on
08-31-2026

$ 27.65 USD
Free Shipping on orders $49 and up
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Sale - Save 8%
$ 29.99

This product was last offered at the strikethrough price on
08-31-2026

$ 27.65 USD
Free Shipping on orders $49 and up
Add to Wish List
The coolant expansion tank provides a place for excess fluid as coolant expands and contracts with temperature changes. Constant exposure to these extremes can cause the tank to crack, break, or suffer damage to its nipples or mounting points. To keep your cooling system sealed and functioning properly, any damaged tank should be replaced.
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