0145131004 - ESAB A2/A6 Insulating Sleeve Replacement Kit (2-Pack)

Keep Your ESAB Tractor Running Smoothly

If you are running an ESAB A2 Multitrac or A6 Mastertrac, you know these machines are workhorses. But even the toughest automatic welding heads need maintenance, especially when it comes to the consumables and insulators inside the torch assembly. The ESAB 0145131004 Insulating Sleeve is the direct replacement part you need when the original insulation begins to crack, wear out, or show signs of heat damage. This kit comes with two sleeves, so you can fix the problem immediately and have a spare ready for the next service interval.

Why is this little sleeve so important? In automatic welding, particularly Submerged Arc (SAW) or heavy-duty MIG, the heat buildup is intense. The insulating sleeve sits inside the head assembly and prevents the welding current from shorting out against the body of the torch or the tractor itself. If this sleeve fails, you might start seeing erratic arc starts, unstable voltage, or even internal arcing that can ruin expensive contact tips and nozzle bodies. Swapping out a worn sleeve is a quick fix that can save you hours of troubleshooting ghost electrical problems later on.

These sleeves are made from high-temperature, durable material designed to survive the splash zone. However, over time, spatter buildup and constant heating and cooling cycles can make them brittle. When you are tearing down the head for a deep clean or changing out liners and tips, take a second to inspect the insulating sleeve. If it looks charred or cracked, pop in a new one from this 2-pack. It fits perfectly because it’s a genuine ESAB part—no filing or forcing required.

Whether you are welding long structural beams, pressure vessels, or ship panels, downtime is the enemy. Having small but crucial parts like the 0145131004 on your shelf means you aren't waiting days for a courier while your machine sits idle. Keep your arc focused and your equipment safe with these OEM replacement sleeves.