Q404-3 - Heavy Duty MIG Gas Diffuser - 404-3 Style (Pack of 5)

Reliable Gas Distribution for Quality Welds

The ESAB Q404-3 Heavy Duty Gas Diffuser is a critical component for maintaining the performance and longevity of your MIG welding setup. Sold in a convenient pack of 5, these diffusers are engineered to withstand the rigors of industrial welding environments. The gas diffuser plays a dual role in your MIG gun: it transfers the electrical current to the contact tip and disperses the shielding gas evenly around the weld pool. A compromised diffuser can lead to poor arc stability, overheating, and weld defects like porosity.

Constructed from high-quality brass alloy, the Q404-3 is designed for heavy-duty applications where heat resistance and electrical conductivity are paramount. Its robust build helps resist mechanical wear and thread damage during tip changes. By ensuring a smooth, laminar flow of shielding gas, this diffuser helps protect the molten weld pool from atmospheric contamination, resulting in cleaner, stronger welds. Whether you are working in structural steel fabrication, heavy equipment repair, or general manufacturing, keeping a fresh supply of these diffusers on hand ensures your production line keeps moving without unexpected downtime.

This 5-pack offers an economical solution for busy shops, allowing for regular maintenance schedules that prevent the performance drops associated with worn-out consumables. Compatible with standard heavy-duty front-end assemblies (typically associated with 404-3 style systems), these diffusers are a staple for any serious welder's toolkit.