What material is the Moroso 63793 expansion tank made from?

The expansion tank is constructed from a clear polycarbonate material. This allows for easy visual inspection of the coolant level and offers good resistance to heat and impact found in the engine bay.

Does this expansion tank require any modifications to install?

No, this Moroso expansion tank is designed as a direct bolt-in replacement. It fits into the existing mounting points and uses the factory connections, meaning no modifications are needed for installation.

What are the benefits of this polycarbonate tank over the original plastic one?

The original plastic tanks can become brittle and crack over time, leading to coolant leaks. The polycarbonate material used in this Moroso tank is more durable and resistant to heat and impact, offering a longer-lasting solution.

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Moroso 01-06 BMW E46 M3 Coolant Expansion Tank - Direct Bolt-In Replacement

Specifications

Brand: Moroso
Part #: 63793
UPC: 84663637933

Moroso 01-06 BMW E46 M3 Coolant Expansion Tank - Direct Bolt-In Replacement

Name: Moroso 01-06 BMW E46 M3 Coolant Expansion Tank - Direct Bolt-In Replacement
Brand: Moroso
Price: 461.86 USD
Availability: InStock

$461.86

Only 8 left in stock

Key Features

Fits 2001-2006 BMW E46 M3.
Constructed from clear polycarbonate for easy coolant level monitoring.
Designed as a direct bolt-in replacement for the factory expansion tank.
Polycarbonate material offers good resistance to heat and impact.
Helps prevent coolant leaks and maintain system pressure.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

This Moroso coolant expansion tank is made from a tough, clear polycarbonate material, allowing you to easily see the coolant level at a glance. It’s designed specifically as a direct bolt-in replacement for the factory plastic tank on 2001 through 2006 BMW E46 M3 models, meaning it fits right into your existing setup without needing modifications.

The polycarbonate construction is chosen for its resistance to heat and impact, common challenges in the engine bay. Unlike the original plastic tank, which can become brittle and crack over time, this Moroso unit offers a more durable solution. It’s a well-built part that addresses a common failure point for E46 M3 owners, helping to prevent coolant leaks and maintain proper cooling system pressure.

This tank comes with everything needed for installation, making it a straightforward upgrade. It’s a solid option for E46 M3 owners looking to replace a failing original part with something more robust.