RYANSTAR RACING 800ml Universal Coolant Expansion Tank - Billet 6061 Aluminum, Polished Black

RYANSTAR Universal 800ml Coolant Expansion Tank is a durable billet 6061 aluminum reservoir that replaces plastic overflow bottles to better protect your engine cooling system.

This universal 800ml coolant expansion tank from RYANSTAR RACING is crafted from anodized 6061 aluminum and designed to resist heat, pressure, and corrosion while fitting a wide range of vehicles. It provides a secure sealed cap with an O-ring and fully TIG-welded construction to minimize leaks and keep coolant where it belongs. The polished black finish gives a performance look while offering greater longevity compared with standard plastic tanks.

How does this aluminum tank improve cooling system reliability?

The billet 6061 aluminum body withstands higher temperatures and resists cracking, so it reduces the risk of failure that can occur with plastic overflow bottles. Tight sealing and strong welds limit vapor and liquid loss, helping maintain correct coolant levels and protecting internal components from rust and air intrusion.

• 6061 aluminum construction for enhanced durability
• Fully TIG welded seams and threaded fittings with O-ring
• Cap design maintains working pressure and prevents leakage
• Polished anodized finish resists corrosion and wear

Will this tank handle high temperatures and pressure in performance use?

Yes — the material and fittings are specified for automotive cooling environments. The supplied hose tolerates -30° to 120°C, operational pressure up to 1 MPa, and burst resistance to 2 MPa, making it suitable for street and mild performance applications.

• Hose temperature range: -30° to 120°C
• Working pressure rating: 1 MPa (approx.)
• Blasting/bursting pressure: 2 MPa
• Cap includes vacuum valve function for coolant return

How does the overflow tank prevent rust and maintain coolant levels?

By providing a sealed place for expanding and contracting coolant, the tank reduces exposure of system fluid to air and contaminants that cause corrosion. When coolant cools and volume contracts, the cap’s vacuum valve allows fluid to flow back into the radiator, preserving correct levels and limiting oxidization of internal parts.

• Sealed environment minimizes air and contaminant entry
• Vacuum valve returns cooled coolant to the radiator
• Helps keep engine operating temperatures within design range
• Simpler, cost-effective prevention of rusted components

How simple is installation and what fitment should I expect?

The RYANSTAR universal tank is designed to fit many aftermarket and OEM setups with common hose sizes and includes threaded fittings for secure attachment. Basic hand tools are typically all you need; the universal design allows for versatile mounting positions but you should verify hose diameter and available space before purchase.

• Universal sizing for broad vehicle compatibility
• Threaded inlet/outlet and O-ring for leak-free connections
• Mounting flexibility for different engine bays
• Works as a direct upgrade from many plastic overflow tanks

Who is this for: Drivers and mechanics who want a longer-lasting, more reliable coolant overflow solution for daily drivers, track-day cars, and modified builds. If you’re upgrading from plastic, aiming to reduce coolant loss and corrosion, or seeking a tidy, anodized reservoir that complements a performance engine bay, the RYANSTAR Universal 800ml Coolant Expansion Tank is a practical, durable choice.