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BMW Coolant Expansion Tanks for BMW 5 Series E61 (2006-2010)

Clear BMW chassis

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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Coolant Expansion Tank Cap - E9x M3, E60 E63 F01 E70 E71

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T#:194502

Part#: 17117639021

In Stock

22% 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.

$ 27.29 USD

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22% 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.

$ 27.29 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.

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Genuine BMW Coolant Expansion Tank - 17137542986 - E60/61 E63/64 Non-...

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T#:367922

Part#: 17137542986

Ships in 1 day

5% off MSRP $ 143.99

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

$ 136.99 USD

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5% off MSRP

$ 143.99

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

$ 136.99 USD

Add to Wish List

If your tank is cracked or leaking, this OE BMW expansion tank is the perfect option to get rid of the leak and prevent coolant loss.

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.

Genuine BMW Expansion Tank-
Fits the following BMW chassis's:
E60,E61,E62,E63

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Coolant Expansion Tank - E60 E63

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T#:340674

Part#: 17137542986

In Stock at Vendor

$ 137.85 USD

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$ 137.85 USD

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This Behr OEM cooling system expansion tank / coolant reservoir is a direct replacement for the factory unit. Replace your cracked or leaking radiator expansion tank today.

Hailing from Stuttgart, Mahle-Behr specializes in automotive cooling systems. From air conditioning to engine cooling M-B has you covered with OE-quality replacement parts.

This item fits the following BMWs:
2004-2010 E60 BMW 525i 525xi 530i 530xi 528i 528xi 528i xDrive 535i 535xi 535i xDrive 545i 550i
2004-2010 E63 BMW 645ci 650i

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Meistersatz CAP- EXPANSION TANK

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T#:1195781

Part#: 17117639021

Ships in 3 Business Days

$ 30.99

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

$ 29.99 USD

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$ 29.99 USD

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Coolant Expansion Tank

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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:377314

Part#: 17137542986

In Stock

$ 55.99 USD

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$ 55.99 USD

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The coolant expansion tank in your vehicle gives additional fluid a place to go after expansion and contraction from temperature change. Because it is subjected to such drastic changes on a regular basis, it can often crack or break. You want to keep all the coolant in your vehicle in the cooling system. If your tank has experienced damage such as cracking, nipples breaking off, or mounting point damage, you will need to replace it.

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Rein Expansion Tank Cap

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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:384807

Part#: 17117639021

In Stock

$ 16.99 USD

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$ 16.99 USD

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Cap for plastic expansion tank

Rein Coolant Expansion Tank - E60, E61, E63, E64

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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:402160

Part#: 17137542986

Ships in 1 Business Day

$ 82.99 USD

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$ 82.99 USD

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Includes fluid level sensor

Expansion Tank Cap

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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:373099

Part#: 17137516004

Ships in 1 Business Day

$ 15.99

This product was last offered at the strikethrough price on
04-10-2026

$ 10.99 USD

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$ 10.99 USD

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The coolant expansion tank cap keeps necessary pressure on your coolant to increase efficiency. If you have an overheating issue in your vehicle, a simple, quick, and inexpensive part to replace is this cap.

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Fluid Level Sensor

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T#:5973204

Part#: 17117546548

Special Order: No Guaranteed ETA

$ 13.99 USD

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$ 13.99 USD

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MEYLE-ORIGINAL: True to OE fluid level sensor. Used in multiple locations. Wulf Gaertner Autoparts AG manufactures and markets automotive spare parts under its MEYLE brand. Since its foundation in 1958, Wulf Gaertner Autoparts has been an owner-operated, unlisted family business on the aftermarket scene. Since 1995, Wulf Gaertner Autoparts AG has been manufacturing and trading under its MEYLE brand. They pride themselves on top-grade quality-tested spare parts for passenger cars, vans and commercial vehicles. Comparable OE Cross Reference - 17117546548

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BMW Expansion Tank With Cap

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T#:46616010

Part#: EPK0128

Ships in 3 Business Days

$ 86.99

This product was last offered at the strikethrough price on
04-28-2026

$ 74.99 USD

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$ 74.99 USD

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The coolant expansion tank acts as a reservoir for excess coolant as it expands and contracts with temperature changes. Over time, the constant exposure to extreme heat cycles can cause the tank to crack, break, or suffer damage to its nipples or mounting points. To keep coolant properly contained within the system, a damaged tank should be replaced promptly.

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