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15401145 - Tweco 54A Gas Diffuser for No. 4 & Magnum 400 MIG Guns

Packaging: 5 in a pack
$9.40/ea $22.50/5 in a pack only $4.50/eaSave 52%

In stock

SKU: TWE1540-1145 Categories: , ,

OVERVIEW

Genuine Tweco 54A Gas Diffuser (1540-1145)

The Tweco 54A Gas Diffuser is a high-performance OEM consumable designed to meet the rigorous demands of industrial MIG welding. Identified by the part number 1540-1145, this diffuser is engineered specifically for medium to heavy-duty applications, typically rated between 300 and 400 amps. It serves as the central interface between the conductor tube, the contact tip, and the gas nozzle, playing a vital role in current transfer and shielding gas distribution.

This diffuser is compatible with a wide range of industry-standard MIG guns, including the Tweco Professional No. 3 and No. 4 series, the Tweco WeldSkill 400, and the Lincoln Magnum 300 and 400 series guns. It is designed to accept Tweco 14 Series contact tips, providing a secure threaded connection that minimizes electrical resistance. Furthermore, the 54A diffuser features a smooth outer surface tailored for 24 Series slip-on gas nozzles, allowing for rapid nozzle removal and cleaning without the need for threads that can become seized with spatter.

Constructed from high-quality brass alloy, the 54A diffuser offers superior thermal conductivity and mechanical strength. It effectively dissipates heat generated during the welding process, prolonging the life of both the diffuser and the contact tip. The precision-drilled gas ports ensure a laminar flow of shielding gas, protecting the weld pool from atmospheric contamination and reducing porosity. Whether used in general fabrication, structural steel, or equipment repair, this genuine Tweco part ensures your MIG gun operates at peak efficiency.

Additional Information
Brand:Tweco
Item:Gas Diffuser
Amperage:300 A, 400 A
Packaging Description:1 per each
Part Number:54A, 1540-1145
Compatible Gun Series:Tweco Professional No. 3, Tweco Professional No. 4, Tweco WeldSkill 400, Lincoln Magnum 300, Lincoln Magnum 400
Contact Tip Compatibility:14 Series
Nozzle Compatibility:24 Series (Slip-On)
Material:Brass
Connection Type:Slip-On Nozzle Interface

INCLUDED

  • 1 x Tweco 54A (1540-1145) Gas Diffuser

APPLICATIONS

  • General Fabrication
  • Structural Steel Welding
  • Heavy Equipment Repair
  • Automotive Manufacturing
  • Shipbuilding
  • Industrial Maintenance

FAQ

The 54A diffuser fits Tweco Professional No. 3 and No. 4 guns, Tweco WeldSkill 400, and Lincoln Magnum 300/400 series guns.

This diffuser is designed to accept standard Tweco 14 Series contact tips (e.g., 14-35, 14-45).

The Tweco 54A is designed for use with 24 Series slip-on gas nozzles. It does not have external threads for the nozzle.

It is machined from high-quality brass to ensure excellent electrical conductivity and heat resistance.

Yes, this is a genuine Tweco OEM part, ensuring perfect fit and compatibility with specified equipment.

The diffuser screws directly onto the conductor tube of the MIG gun. Ensure the threads are clean before installation.

It is typically used in guns rated for 300 to 400 amps.

Yes, if you have a Lincoln Magnum 300 or 400 gun that uses Tweco-style front-end consumables, this is the correct diffuser.