Category Archives: BMW 3-Series E36 Expansion Tank 1992-1999

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BMW E36 Aluminum Coolant Expansion Tank R&D, Part 3: Final Prototype and Test Fit

Interested in picking up this aluminum E36 expansion tank? Check out our product page linked below!

BMW E36 Aluminum Coolant Expansion Tank!

The time has come and the anticipation is over. Our final prototype unit has been constructed, and we are ready to check fitment! On to the pictures!

Final Expansion Tank Images

Mishimoto expansion tank prototype
Mishimoto expansion tank prototype
Mishimoto expansion tank prototype
Mishimoto expansion tank prototype
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BMW E36 Aluminum Coolant Expansion Tank R&D, Part 2: Initial 3D Model and Prototype

Interested in picking up this aluminum E36 expansion tank? Check out our product page linked below!

BMW E36 Aluminum Coolant Expansion Tank!

  Time to break open the stock tank and see what lies within. If you follow some of our other development projects, you would know that we recently split an E46 3-series expansion tank and found quite a complex system including both internal and external features. Although this added some complexity and difficulty to the project, it seemed like our engineers enjoyed the challenge.

Stock Expansion Tank Internals

First, before we slice this guy in half, … Continue Reading ››

BMW E36 Aluminum Coolant Expansion Tank R&D, Part 1: Intro and Factory Tank

Interested in picking up this aluminum E36 expansion tank? Check out our product page linked below!

BMW E36 Aluminum Coolant Expansion Tank!

  Historically, BMW vehicles have been plagued with rather frequent cooling system failures. A majority of these failures are a result of the use of plastic components in a high-temperature application. Although failure isn’t immediate, over time the frequent heat cycling of these plastic components results in increased fragility, fatigue, and eventual failure. A few components we see failing on E36 models include the radiator end tanks, radiator expansion tank, and the mechanical fan. We … Continue Reading ››