998590 - ESAB 4216 Style MIG Gun Nozzle, 1/2 Inch Bore

Reliable Gas Coverage for Quality Welds

The ESAB 4216 Nozzle (1/2 Inch) is an essential consumable for professional fabricators and hobbyists alike. In the MIG welding process (GMAW), the nozzle plays a critical role in directing the shielding gas around the weld pool, protecting it from atmospheric contamination. A compromised or clogged nozzle can lead to porosity, brittle welds, and excessive spatter. This ESAB replacement nozzle is engineered to restore your MIG gun's performance, ensuring a smooth, laminar flow of gas that keeps your arc stable and your welds clean.

Constructed from high-grade copper alloy, this nozzle is built to withstand the intense heat of the welding arc. Copper is the material of choice for MIG nozzles due to its excellent thermal conductivity, which helps pull heat away from the front end of the gun, prolonging the life of your contact tips and the nozzle itself. The 1/2-inch bore size is the industry standard for general-purpose welding, offering a perfect compromise between gas coverage and accessibility into tighter corners. Whether you are welding mild steel, stainless, or aluminum, maintaining a fresh nozzle is key to achieving professional results.

Over time, spatter buildup can restrict gas flow and cause turbulence. The smooth interior finish of the ESAB 4216 nozzle resists spatter adhesion, making it easier to clean with standard nozzle dip or a pair of welding pliers. By replacing your worn nozzle with this genuine ESAB part, you ensure that your equipment operates at peak efficiency, reducing downtime and rework. It is designed to fit securely onto compatible gas diffusers, preventing gas leaks and ensuring the nozzle stays concentric with the contact tip for optimal arc alignment.

Key Benefits

• Consistent Shielding: Directs gas precisely over the weld pool to prevent oxidation and porosity.


• Durable Construction: Heavy-duty copper alloy resists deformation from heat and impact.


• Standard Fit: The 1/2-inch bore is versatile for a wide range of wire diameters and amperages.


• Easy Maintenance: Smooth surfaces allow for quick removal of spatter buildup.