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There is nothing more frustrating than a wire feed issue right in the middle of a critical weld. If your wire is dragging, stuttering, or birdnesting at the drive rolls, it’s likely time to replace your gun liner. The Miller 194012 Replacement Liner is the authentic solution for restoring the smooth operation of your Miller or Hobart MIG gun. Designed for the most common wire sizes used in general fabrication—.035" and .045"—this liner is a shop essential for anyone running a Millermatic 212, 252, or similar 15-foot setup.
Welders Supply offers this genuine Miller part at the best value online because we understand that consumables are the lifeline of your business. This liner fits all M-Series and H-Series MIG guns, making it a versatile spare part to keep on your shelf. Whether you are using a Handler, an IronMan, or a Multimatic, this liner ensures your equipment operates at factory specifications. Miller is known for world-class quality control under ISO 9001:2000 standards, and their replacement parts are no exception. Don't settle for generic knock-offs that might have inconsistent internal diameters or poor coil winding; stick with the brand that built your machine.
Regularly replacing your liner—typically once a year for casual use or more frequently for heavy industrial use—is cheap insurance against downtime. A fresh liner reduces the load on your drive motor and ensures the wire is centered perfectly as it enters the contact tip, improving arc starting and stability. This specific liner (Part #194012) covers the medium-to-heavy wire range. If you are running lighter wire (.023-.030), you would need a different part number, but for structural work and general steel repairs using .035 or .045 wire, this is the standard.
Why Buy From Welders Supply?
We are welding experts who know what it takes to keep a shop running. We stock the parts you need so you aren't left waiting. This liner is easy to install and instantly improves the feel of your welding gun. Simply remove the old liner, blow out the cable with compressed air, slide the new Miller 194012 in, and trim to fit. It’s a five-minute maintenance job that can save you hours of frustration.
| Additional Information |
|---|
| Brand:Miller |
| Item:Liner |
| Wire Size:0.035" - 0.045" |
| Length:15 ft |
| Packaging Description:1 per each |
| Fits Which Model:Millermatic 200, 210, 250, 252, 22, 32, 52 Feeders |
| Material:Steel Monocoil |
| Compatible Brand/Model:Miller M-Series, Hobart H-Series, Bernard Q150 |
| Product Type:MIG Gun Liner |
