Weld Bungs and Plugs - Stainless Steel 304 & Aluminum 6061

ARC Fabrication Supply O2 Sensor Weld Bungs and Plugs are precision-machined from durable 304 stainless steel and feature the most commonly used M18x1.5 thread pitch. Each plug includes a low-profile Allen head and copper sealing washer for a secure, leak-free seal. Weld bungs are radiused to match exhaust pipe curvature, ensuring a cleaner, easier weld.

Now also available: lightweight 6061-T6 aluminum 1/8" NPT weld bungs—perfect for custom fabrication projects and sensor installs.

*** 25% OFF AUTOMATICALLY APPLIED TO YOUR CART WHEN YOU PURCHASE 10 OF THE SAME FITTINGS! ***