BMW Brake Fluid 81220142156

The BMW Brake Fluid (Part No. 81220142156) is BMW's OEM-specification brake fluid — the factory-correct fluid for bleeding, topping up, or replacing brake fluid in all BMW and MINI vehicles. Brake fluid is arguably the most safety-critical fluid in your BMW. Using the correct specification, and replacing it on BMW's recommended interval, is non-negotiable for maintaining full braking performance.

Why Brake Fluid Must Be Replaced on Interval

Brake fluid is hygroscopic — it absorbs moisture from the atmosphere through the brake lines and reservoir over time. As moisture content rises, the fluid's boiling point drops. BMW's performance brake systems generate significant heat during hard braking — during track use or mountain driving on Colorado's passes, brake fluid temperatures can approach 200°C (392°F) even in road cars. If the fluid's boiling point has been reduced by moisture absorption, vapor bubbles form in the lines (vapor lock), causing a sudden, dramatic loss of pedal feel and braking force. BMW recommends brake fluid replacement every 2 years regardless of mileage.

Key Benefits

• BMW OEM specification — factory-correct fluid for all BMW and MINI models
• High dry and wet boiling points for sustained braking performance
• Compatible with all BMW ABS, DSC, and M Dynamic Mode braking systems
  
• Replace every 2 years regardless of mileage per BMW's service recommendation
• Compatible with all BMW brake caliper, master cylinder, and ABS unit seals

Product Specifications