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Tweco-Style MIG Gas Diffuser #4 (2 Pack)

Tweco-Style MIG Gas Diffuser #4 (2 Pack)

Low stock: 1 left

Regular price $11.85 AUD
Regular price $0.00 AUD Sale price $11.85 AUD
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The gas diffuser sits behind the contact tip and spreads the shielding gas evenly around the wire as it feeds through. This Tweco-style #4 diffuser suits 300 and 400 amp air-cooled Tweco-pattern torches, and a diffuser with blocked or damaged ports is a common, overlooked cause of a weld that looks fine one minute and porous the next.

It's a wear part like the tip and nozzle, so replacing it on the same schedule keeps your gas coverage consistent instead of guessing why the last few welds looked ordinary.

Full specs are in the tabs below.

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The technical bits

  • Pattern: Tweco 4 style
  • Pack size: 2 diffusers
  • Fits: 300 and 400 amp air-cooled Tweco-pattern torches
  • Function: Spreads shielding gas evenly around the wire

Why it's worth it

  • Even gas spread cuts down on inconsistent weld quality
  • Wear part worth replacing alongside tips and nozzles
  • Suits 300 and 400 amp air-cooled Tweco-pattern torches
  • Rules out a common, hard-to-spot cause of porosity

Shipping and Returns

We pack and send your order with care, right here from our Strathalbyn store. Most parcels leave within 1-2 business days, and you'll get tracking as soon as it's on the way. If you're local, you can choose click-and-collect or our delivery service at checkout.

If something arrives damaged or not quite right, let us know within 14 days and we'll sort it quickly. You can return unused items in their original condition for a refund or store credit. For safety reasons, we can't accept returns on gas bottles, cut materials, or custom orders.

We're here to make things easy, so if you ever have a question about your delivery or a return, our team is only a call away.

  • Trade-grade, job-tested

    This gear is selected for daily use on real job sites, not light-duty or one-off projects.

  • Right gear, first time

    We help you get the correct product and spec upfront so you’re not redoing work later.

  • In and out fast

    Call ahead and we'll set your order aside so you spend less time at the counter.