4477 - Miller 004477 Replacement Inlet Guide Tube .023-.045

Restore Smooth Wire Feeding with a New Inlet Guide

Is your Miller MIG welder sputtering or feeding erratically? The problem might not be your liner or contact tip—it could be the inlet guide on your wire feeder. The Miller Style Feeder Tip .023-.045 (Replacement for 004477) is an essential maintenance part that often gets overlooked. Located right before your drive rolls, this small metal tube is responsible for aligning the wire from the spool and ensuring it enters the drive rolls straight and true.

Over time, the welding wire cuts a groove into the inlet guide. Once this happens, the wire can drag, scrape, or shave off copper coating, which then clogs up your liner and gun. Even worse, a misaligned guide can cause the wire to slip off the drive roll groove, leading to the dreaded "birdnest" of tangled wire inside your machine. Replacing this inexpensive part is one of the easiest ways to tune up your welder and ensure consistent, frustration-free performance.

This guide is designed to handle the most common wire sizes used in general fabrication and auto body work, from thin .023" wire up to .045" structural wire. It installs in seconds—usually held in place by a simple set screw or the pressure of the drive roll assembly cover. Whether you are running a classic Millermatic 200 in your garage or maintaining a fleet of S-Series feeders in a production shop, keeping a spare inlet guide on hand is smart practice.

Why Replace Your Inlet Guide?

• Prevent Wire Shaving: Worn guides strip copper off the wire, clogging your liner.
• Stop Birdnesting: Proper alignment keeps the wire in the drive roll groove.
• Smoother Arc: Consistent feeding means a stable arc and better weld bead appearance.
• Universal Fit for Range: One guide handles all your standard wire sizes (.023, .030, .035, .045).

Don't let a five-dollar part ruin a day of welding. Inspect your inlet guide every time you change your drive rolls, and replace it if you see signs of keyholing or wear.