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BMW Coolant Expansion Tanks for BMW X5 M S63 4.4L

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

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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Qty

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

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

T#:29699315

Part#: 17135A1BD89

In Stock

6% off MSRP $ 34.99

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

$ 32.99 USD

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Qty

6% off MSRP

$ 34.99

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

$ 32.99 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

Titanium Coolant Bleeder Screw Upgrade

T#:38621407

Part#: BMS-TCBS

Back Ordered

$ 25.00 USD

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$ 25.00 USD

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Replace your fragile OEM plastic coolant bleeder screw, which is prone to cracking and failure, with a premium titanium upgrade built for strength and style under the hood. Factory plastic components weaken over time due to constant heat cycles, leading to brittleness and potential failure. Our titanium replacement delivers superior durability, being twice as strong as aluminum yet 45% lighter than steel, ensuring unmatched resilience and long-term reliability for your coolant system. More than an upgrade, it’s a must-have for engine longevity. CNC-machined from solid titanium, each screw features a laser-etched Burger Motorsports logo and is hand-burned to create unique color patterns—no two are alike. A heavy-duty replacement O-ring is included for a perfect fit.

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Bav Auto Coolant Expansion Tank - With Level Sensor - E70 X5, E71 X6 ...

10X Entries Into Our F80 M3 Sweepstakes

T#:638093

Part#: 17138621092

In Stock

Sale - Save 20% $ 60.99

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

$ 48.79 USD

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Qty

Sale - Save 20%

$ 60.99

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

$ 48.79 USD

Add to Wish List

Replace your old expansion tank to prevent potential failure or leaks. Includes a brand new coolant level sensor.

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BMW Coolant Expansion Tanks for BMW X5 M S63 4.4L

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

Genuine BMW Engine Coolant Expansion Tank Cap - 17135A1BD89

Titanium Coolant Bleeder Screw Upgrade

Bav Auto Coolant Expansion Tank - With Level Sensor - E70 X5, E71 X6 ...

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