Tweco
Tweco 15401145 Gas Diffuser PK5
Gas diffuser compatible with Tweco Classic No. 2, 3, 4 and WeldSkill WM 250 and 400 series guns, pack of five
- TypeWelding Parts & Supplies
- Compatible with Tweco WM400 and Classic series guns
- Gas diffuser WS54A ensures proper shielding gas flow
- Pack of five diffusers for extended welding jobs
- Suits WeldSkill WM 250 and WM 400 models
- New Tweco part number 15401145 ready for use
Gas Diffuser for Tweco Guns
This five-pack of genuine Tweco gas diffusers carries part number 15401145 and replaces the WS54A component. It fits Classic No. 2, Classic No. 3 and Classic No. 4 guns as well as WeldSkill WM 250 and WM 400 models. The diffusers are new and ready for workshop stock.
Replaces worn WS54A diffusers
Swap the diffuser when gas flow becomes turbulent or the tip seats poorly, which typically happens after heavy daily use. The jump is worth it when the existing diffuser is cracked, carbon-tracked or no longer holds the contact tip square. Each pack supplies five replacements for quick change-overs.
Fits Tweco and WeldSkill MIG guns
The diffuser threads directly into compatible Tweco Classic and WeldSkill handles without adapters. It frees the operator from matching loose aftermarket parts and keeps the gas circuit sealed at the rated 250 or 400 amp capacity. No additional tools are required beyond standard gun pliers.
Highlights
- Compatible with Tweco WM400 and Classic series guns
- Gas diffuser WS54A ensures proper shielding gas flow
- Pack of five diffusers for extended welding jobs
- Suits WeldSkill WM 250 and WM 400 models
- New Tweco part number 15401145 ready for use
Specifications
| Type | Welding Parts & Supplies |
|---|---|
| Brand | TWECO |
Questions about this item
Which Tweco gun models accept the WS54A diffuser?
The WS54A diffuser fits Tweco Classic No. 2, Classic No. 3, Classic No. 4, WeldSkill WM 250 and WeldSkill WM 400 guns.
How do I install the WS54A diffuser without cross-threading it?
Thread the diffuser onto the gun head by hand until snug, then tighten with a wrench; the common error is using the wrench from the start and stripping the threads.
How often should I replace the WS54A diffuser?
Replace the diffuser when gas flow becomes erratic or spatter blocks the ports; heavy daily use typically requires a change every few weeks.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.



