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Miller Coolant Expansion Tank 258360

$247.95/EA $174.03/1 PER EA only $174.03/EASave 30%

Usually ships within 3-5 business days

OVERVIEW

Maintain Peak Performance with Miller Replacement Parts

Keep your liquid-cooled welding systems running at optimal temperatures with the Miller 258360 Coolant Overflow Bottle. This authentic replacement part is essential for the proper functioning of water-cooled TIG and MIG setups. In any liquid cooling loop, the coolant fluid expands as it absorbs heat from the torch and power source. The overflow bottle acts as an expansion tank, accommodating this volume change to maintain consistent system pressure and prevent the loss of expensive coolant fluid. A compromised or leaking bottle can lead to air entering the system, pump cavitation, and ultimately, overheating of your valuable torch and cables.

Constructed from high-quality, heat-resistant materials, the Miller 258360 is designed to withstand the demanding conditions of a welding shop. Over time, plastic components can become brittle due to heat cycles and UV exposure. Proactively replacing your overflow bottle ensures that your cooling system remains sealed and efficient. This part is engineered for a direct fit, making installation straightforward and hassle-free for maintenance personnel. The clear visibility of the reservoir also aids in daily inspections, ensuring that low coolant levels are detected before they cause equipment failure.

Welders Supply recommends using only genuine Miller parts to maintain the warranty and performance standards of your equipment. This overflow bottle is compatible with specific Miller cooling units and power sources. By choosing the correct OEM part, you ensure that the connection points, capacity, and material compatibility are exactly what your machine requires. Don't let a small leak turn into a major repair; trust the Miller 258360 to keep your coolant contained and your welds flowing smoothly.

Additional Information
Brand:Miller
Packaging Description:1 Per Ea
Product Type:Coolant Overflow Bottle
Material:Plastic
Compatibility:Miller Liquid-Cooled Systems

INCLUDED

  • 1 x Miller 258360 Coolant Overflow Bottle

APPLICATIONS

  • Miller Liquid-Cooled Welding Systems
  • TIG Welding Cooling Units (e.g., Coolmate series)
  • Integrated Power Source Cooling Systems
  • Industrial Welding Maintenance and Repair

FAQ

It serves as an overflow or expansion reservoir to catch expanding coolant as the system heats up, preventing pressure buildup and leaks.

Yes, this is an authentic Miller OEM part, ensuring correct fitment and material quality.

You should check your welding machine's parts manual or verify fitment using your serial number on the Miller website.

Typically, this part number refers to the bottle itself. Please check the product image or current stock details, as caps are often sold separately or reused.

A cracked bottle can cause coolant loss, introduce air into the system, and lead to overheating of the torch or pump failure.

It is designed specifically for welding coolant mixtures used in Miller equipment and may not be suitable for other chemicals.

It is typically made of translucent plastic, allowing you to visually monitor the coolant level inside.

It is manufactured from durable, chemical-resistant plastic designed to withstand the thermal cycles of welding environments.
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