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Billet Aluminum Expansion Tank E39 M5

Billet Aluminum Expansion Tank E39 M5

Regular price $399.00 USD
Regular price $0.00 USD Sale price $399.00 USD
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The Ultimate BMW E39 M5 Coolant Expansion Tank

Elevate your BMW E39 M5's cooling system with our Billet Aluminum Coolant Expansion Tank. Say goodbye to the frail, discolored plastic tanks that crack and leak. EAE Motorsports' high-performance Billet Aluminum Expansion Tank is here to provide a long-lasting and aesthetically pleasing solution.

Our Innovative Approach

The coolant expansion tank in the BMW E39 M5 has been a source of multiple issues, compelling us at EAE Motorsports to innovate. Our robust, patent-pending design replaces the plastic tank, eliminating the typical problems of cracking and discoloration. With our tank, you can drive with confidence, whether on the track or the open road.

Key Features

  • Crafted from durable 6061 T6 Billet Aluminum
  • Radium Engineering Cap
  • Will not crack, leak, or discolor
  • Option for custom anodizing colors
  • Lifetime Warranty for added peace of mind

Solving The Problem

Original plastic coolant expansion tanks are prone to cracking, leading to coolant leaks and potentially expensive repairs. Furthermore, their unsightly yellowing tarnishes the under-hood appearance. These issues have led many to seek out ineffective temporary solutions or inferior aftermarket options.


Our expansion tank is designed to fit seamlessly into your BMW E39 M5. It serves as a direct replacement for BMW part number 17112229114 (17-11-2-229-114), ensuring compatibility and performance.

Delivery Date: 

The expansion tanks are in production at the moment. The production time is between 3-4 weeks with an ETA of Feb 5th, 2024. 

Vehicle Fit Guide

S62 5.0L
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