LEDAUT M18X1.5 Stainless Steel Stepped Mounting Bung And Plug Fittings (2 Bungs/2 Plugs) For Welding Review

The bung was what I needed and it was made of stainless as described and it did come with the correct plug. However the one shipped to me was not threaded at all. I did have a friend with the right tap to correct this issue however it was much more effort than was expected for this simple project. As far as the reviews that talk about the threads being 90 deg. to the mating surface I used a grinder with a new wheel to match the face of the bung after checking it to the sensor.

While going to replace the rear most oxygen sensor on my old Subaru, When i went to take it out the the rust was more than i expected (around the threads in the sensor) and i ended up actually tearing the old original bung out of the Catalytic Converter. I bought this bung to replace the old one(which still have the old sensor stuck in it), welded it in and installed my new Oxygen Senor and all is well now.

Bought these reading the info on the listing saying the bung was stainless and the cap not, but as you can see, not really 100% stainless. It definitely isnt mild, but its definitely ferrous.

I only needed the plug, but the bung and plug were certainly good quality. I used the plug in a stainless steel exhaust system I purchased that had a bung welded in that I didn't need, The plug fitted perfectly and was equal in quality to the exhaust system I had purchased. PLUS I got it over night. TWOFER!

Welded the bung onto a stainless VW header, and used the plug until my wideband setup arrived in the mail. The stepped design makes it a lot easier to weld (for an amateur like me, at least).

Quick and easy. Should make my truck run that much better. Couldn't be easier to drill a hole and weld it in. That's my feedback.

Hi,Not the best but they will work just make sure to use lots of good anti-seize. Yes Lots…These are definitely HD The fittings may not be perfect for high-pressure applications, potentially leading to leaks or failure.

The product I ordered was supposed to be stepped (in diameter) to ease installation. The description said it was stepped, the images shown appeared to be stepped yet the product I received was not. This made installation difficult. I ordered one from a different supplier.

Welded the bung on a 4l80E transmission pan and combined with a Stahlbus M18 drain valve to make fluid changes a piece of cake.

Very low quality. Typical Chinese junk! Glad they come 2 to a package and that I need only one because the threads are not square to the sealing surface making one unusable. Look for American made ones if you need them to finish your build.

The bung was perfect. The step down section helped create a surface to weld against. The O2 sensor screwed right in. Overall a great product. I would recommend for anyone looking to buy it.

What's to say? Drill a 7/8" hole. Stepped bung drops right in. Weld it up. Install sensor. Threads were cut straight on mine.

Bung wil be fine, just hope when I put the sensor in at a later date I can get the plug out as it does not seem to be stainless. Taking it to a pro for TIG.

Ordered O2 sensor bung requested return for right part got same part again.spark plug wire loom. Package says O2 sensor weld bung again but nope not what is pictured

Exactly what I expected. Great quality. Nice plugs. Welded in without issue on a new set of headers before dynoing an engine. Be sure to have a tap handy to run through the threads after welding.

Good price and plugs are included. Needed to finish stainless exhaust system. Just one problem, 1 of the 4 bungs were unthreaded and unusable.

This is designed for a O2 sensor not as a drain plug. The threaded plug is used to keep bung from distorting during welding it in more so then a plug . any thing should have antiseize placed on threads before threading it into bung. I have use these bungs countless times on holley sniper fuel injection systems.

I threaded the plug in to the bung just to check the threads and fit. it was obvious something was skewed since the plugs mating surface had a gap at one side of the bung face. upon further inspection it proved the Threads are not 90* to the face , this could lead to an exhaust leak if your crush washer doesn't take up the gap so make sure you check/address before you weld or find another brand

pros: cheap, o2 sensor thread in okcons: the plug does not really sit perfectly flat (check pics)hopefully it won’t leakif you want perfectly fitting o2 bungs get the more expensive ones. if a slight imperfection is ok then get these. I haven’t welded them in, so i will update this review once I do

Important note, after being extremely frustrated at first it may be helpful for some green welders to know that this type of Steel is not-magnetic. Happy we dug a little deeper. Welded up great, and don't have to disgracefully delete a one star review ;)