M1108 - Miller M1108 Wire Guide Extension Tube for Pistol Pro/Plus

Precision Replacement for Miller Pistol Grip Guns

The Miller M1108 Extension Tube is a specialized component engineered to maintain the operational integrity of Miller Pistol Pro and Pistol Plus welding gun assemblies. As a critical element in the wire feeding path, this tube bridges internal gaps within the gun structure, ensuring that the welding wire transitions smoothly from the drive mechanism towards the contact tip without deviation or buckling. Manufactured to strict OEM tolerances, the tube features an inner diameter (ID) of 0.210 inches, an outer diameter (OD) of 0.250 inches, and a precise length of 0.700 inches. These specific dimensions are essential for maintaining the concentricity required for consistent arc performance.

In industrial welding environments, internal components of MIG guns are subject to mechanical wear from the constant friction of moving wire. Over time, the inner surface of an extension tube can become grooved or obstructed, leading to erratic wire feeding, increased liner friction, or even wire shaving. Replacing these components with genuine Miller parts like the M1108 ensures that the equipment continues to function within its original design parameters. This part is particularly vital for the Pistol Pro and Pistol Plus series, where precise wire alignment is necessary to prevent bird-nesting and ensure reliable operation during complex fabrication tasks.

Maintenance professionals and equipment technicians rely on authentic Miller replacement parts to minimize downtime and extend the service life of welding apparatus. The M1108 is constructed from durable materials designed to resist the heat and stress typical of welding operations. When servicing a Miller Pistol Pro or Pistol Plus unit, verifying the condition of the extension tube is a standard procedure. If wear is detected, the M1108 provides a direct, drop-in solution that restores the gun's internal geometry. This item is sold individually and is identified by the internal SKU M1108. Always verify fitment against your machine's serial number or parts breakdown to ensure compatibility.