0558101874 - ESAB PP401+ Brass Neck Liner 45 Degree

Precision Wire Guidance for Push-Pull Systems

The ESAB 0558101874 Neckliner is a specialized replacement component designed for the PP401+ series of Push-Pull MIG guns. In high-performance welding environments, the integrity of the wire feed path is paramount, particularly within the torch neck where the wire must navigate a bend before reaching the contact tip. This liner is manufactured from high-quality brass, a material selected for its balance of rigidity and low friction coefficients, ensuring that welding wire traverses the 45-degree angle of the torch neck with minimal resistance.

Push-pull systems are frequently utilized for feeding softer wires like aluminum or for long-distance feeding applications where drag must be minimized. The neck liner, often referred to as a jump liner, acts as the final conduit within the gun assembly. Over time, the internal surface of the liner can become grooved or clogged with shavings and debris, leading to erratic arc characteristics or wire chatter. Replacing the neck liner with this genuine ESAB part restores the original factory tolerances and feed characteristics of the PP401+ system.

This specific unit is pre-formed or designed to accommodate the 45-degree neck geometry, eliminating the guesswork associated with universal liners. By maintaining the correct internal diameter and bend radius, the ESAB 0558101874 prevents the wire from binding or scraping against the torch body, which is critical for maintaining the longevity of the torch and the quality of the weld deposit. It is an essential spare part for maintenance, repair, and operations (MRO) inventories supporting ESAB welding equipment.

Installation is straightforward and aligns with standard maintenance procedures for the PP401+ torch. Ensuring that the neck liner is in good condition is a proactive step in preventing downtime caused by feed failures. This component is compatible specifically with the 45-degree neck configuration, ensuring a seamless fit and reliable operation in industrial fabrication settings.