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TWECO Gas Diffuser: WM400, For Classic No. 2/3/4, WeldSkill WM 250/400 MIG Gun - Gas Diffusers for Tweco MIG Guns
TWECOGas Diffusers for Tweco MIG Guns

TWECO Gas Diffuser: WM400, For Classic No. 2/3/4, WeldSkill WM 250/400 MIG Gun

The TWECO Gas Diffuser: WM400 is a threaded gas diffuser designed for Tweco MIG Guns, specifically for Classic No. 2/3/4 and WeldSkill WM 250/400 MIG Guns. It is compatible with the WS14 Contact Tip Series and…

SKU 3G-OTH-358774

Brand
TWECO
Item
Gas Diffuser: WM400, For Classic No. 2/3/4, WeldSkill WM 250/400 MIG Gun
Category
Gas Diffusers for Tweco MIG Guns
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

TWECO
Manufacturer Part Number
15401145
Type
For Classic No. 2/3/4, WeldSkill WM 250/400 MIG Gun, 5 PK
Connection Type
Threaded
Gas Diffuser Number
WS54A
For Contact Tip Series
WS14

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TWECO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The TWECO Gas Diffuser: WM400 is a threaded gas diffuser designed for Tweco MIG Guns, specifically for Classic No. 2/3/4 and WeldSkill WM 250/400 MIG Guns. It is compatible with the WS14 Contact Tip Series and carries the Gas Diffuser Number WS54A. This product is sold in a 5-pack and is identified by manufacturer part number 15401145.

Frequently Asked Questions

What is the TWECO Gas Diffuser WM400 used for?

The TWECO Gas Diffuser WM400 directs shielding gas evenly around the weld arc on MIG guns. It is designed for Tweco Classic No. 2/3/4 and WeldSkill WM 250/400 MIG guns, ensuring proper gas coverage for quality welds in industrial fabrication and repair applications.

What are the specifications of the TWECO Gas Diffuser WM400?

The TWECO Gas Diffuser WM400 has a threaded connection type and is compatible with the WS14 Contact Tip Series. It carries Gas Diffuser Number WS54A and is sold in a 5-pack. The manufacturer part number is 15401145. It fits Classic No. 2/3/4 and WeldSkill WM 250/400 MIG guns.

Where to buy the TWECO Gas Diffuser WM400 worldwide?

3G Electric supplies the TWECO Gas Diffuser WM400 worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this 5-pack gas diffuser for your Tweco MIG gun needs.

How to install the TWECO Gas Diffuser WM400?

To install the TWECO Gas Diffuser WM400, first ensure the MIG gun is disconnected from power. Remove the old diffuser by unscrewing it counterclockwise. Thread the new WS54A diffuser onto the gun neck by hand until snug, then tighten gently with a wrench. Avoid overtightening to prevent thread damage.

Used in

Common applications for TWECO
General fabrication – TWECO 24 Series nozzles (WS24CT) for MIG welding of mild steel in structural applications.
Automotive repair – TWECO 22 Series bottleneck nozzles (22-50) for access in tight spaces during body panel welding.
Heavy equipment maintenance – TWECO 16 Series contact tips (16S-45) for 0.045 in wire in repair of machinery components.
Aluminum welding – TWECO SG200REB spool gun for feeding 3/64 in aluminum wire in argon-shielded applications.
High-volume production – TWECO gas diffusers (WM150) for consistent gas coverage on Spray Master 250 guns in manufacturing lines.
Pipe welding – TWECO 14 Series contact tips (WS14A364) for 3/64 in wire in orbital or manual pipe joints.

TWECO Products

3G Electric supplies TWECO gas diffusers for tweco mig guns. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Cross-referenced by specification & description
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