9-1901 - Tweco 9-1901 Adapter for No. 4 and 5 MIG Guns

Restore Your Torch with the Tweco 9-1901 Insulator Sleeve Adapter

Keep your Tweco MIG gun running smoothly with the 9-1901 Adapter. Designed for the heavy-duty Tweco No. 4 and No. 5 series guns, this adapter is the unsung hero of your torch's front-end assembly. Over time, heat and constant nozzle changes can strip threads or deform the adapter, leading to wobbly nozzles and inconsistent gas shielding. Replacing this part is a quick and affordable maintenance step that restores the tight, factory-fresh feel to your welding gun.

This adapter is precision-machined from durable brass, offering excellent conductivity and heat resistance. It screws directly onto the gun tube, providing a secure mounting point for the insulator sleeve (such as the 34A). By ensuring the insulator is seated correctly, the 9-1901 helps prevent electrical shorts between the contact tip and the nozzle, which is crucial for preventing spatter buildup and nozzle damage.

Whether you are repairing an older torch or stocking up on spare parts for a fabrication shop, the Tweco 9-1901 is an essential item to have on hand. It fits standard 400A and 500A air-cooled guns that utilize the slip-on nozzle system. Don't let a stripped adapter slow down your production; swap it out with this genuine Tweco replacement and get back to laying perfect beads.

Key Features

• Perfect Fit: Designed exclusively for Tweco 4/5 series guns.
• Durable Construction: Brass material resists thread wear and heat.
• Easy Installation: Screws on quickly with standard wrench flats.
• Improved Performance: Ensures stable gas flow and nozzle alignment.