Hi Volks,

I recently installed a replacement J pipe between the Cat and the
collector on my vanagon after the flange rusted away on its predecessor.

The exhaust ran quiet for a few weeks but recently got noisier. When I
inspected, I found that the diagnostic sensor port plug had fallen off.

Can anyone identify the thread on this, and a potential source for a
replacement?

Thanks!

Happy Trails,

Greg Potts
Toronto, Ontario Canada
1973/74/79 Westfakia "Bob the Tomato"
1987 Wolfsburg Weekender Hardtop
www.busesofthecorn.com
www.pottsfamily.ca