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P4E312M - Parker Style 300A MIG Gun with Miller Connection - 12ft

Packaging: 1 of each
$290.00/ea $207.14/1 of each only $207.14/eaSave 29%

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OVERVIEW

Heavy-Duty Replacement MIG Gun for Miller Welders

Get back to welding with confidence using this premium 300 Amp MIG gun, specifically designed as a direct replacement for Miller-style setups. If you are looking for a torch that feels good in the hand and stands up to the heat, the Parker Style P4E312M is an excellent choice. With a 12-foot lead, you have plenty of room to move around your workpiece without being tethered too closely to the machine, yet the cable is short enough to ensure smooth, trouble-free wire feeding for both solid and flux-cored wires.

One of the biggest frustrations for welders is dealing with proprietary or hard-to-find contact tips and nozzles. This gun solves that problem by using standard Bernard Centerfire style consumables. These parts are favorites in the industry because they are easy to swap out—often without tools—and they last longer than traditional threaded tips. The gas diffuser and nozzle design ensure your weld pool stays protected, helping you lay down cleaner, stronger beads with less spatter.

Installation is a breeze thanks to the standard Miller power pin on the back. simply unplug your old gun and plug this one in. The trigger action is crisp and responsive, and the handle's curved design helps reduce wrist strain during all-day welding projects. Whether you are repairing heavy equipment, building trailers, or working on structural steel, this 300A air-cooled gun delivers the power and reliability you need to get the job done right.

Additional Information
Amperage:300
Length:12 ft
Back End:Miller
Brand:Parker
Front End:Bernard
Torch Type:Air Cooled MIG
Cooling Method:Air Cooled
Duty Cycle:60% @ 300A (CO2)
Connection Type:Miller
Consumable Compatibility:Bernard Centerfire
Wire Size Capacity:0.035" - 0.045"
Packaging Description:1 of each

INCLUDED

  • 1x Complete 300A MIG Gun Assembly (12ft)
  • 1x Miller-Style Power Pin (Installed)
  • 1x Standard Steel Liner (Installed)
  • 1x Contact Tip (Installed)
  • 1x Nozzle (Installed)

APPLICATIONS

  • Structural Steel Fabrication
  • Heavy Equipment Repair and Maintenance
  • General Manufacturing
  • Automotive and Trailer Building
  • Shipyards and Marine Applications
  • Construction Site Welding

FAQ

The gun is rated for 300 Amps at a 60% duty cycle when using CO2 shielding gas.

Yes, if your Millermatic welder uses a standard Miller power pin connection, this gun is a direct fit.

This gun is compatible with Bernard Centerfire style consumables (nozzles, contact tips, and diffusers).

Yes, it comes pre-installed with a standard steel liner suitable for common wire sizes like .035" and .045".

This is an air-cooled MIG gun, meaning it relies on ambient air and shielding gas flow for cooling.

Yes, but you will need to replace the pre-installed steel liner with a polymer or Teflon liner to prevent wire shaving and feeding issues.

The cable assembly is 12 feet long.

Yes, the trigger switch is a serviceable part and can be replaced if it wears out.