ZR-1 Net Registry Forums - View Single Post

mike100 · 06-24-2014

I made my own extensions since the 91 vette uses a 3 wire heated O2 sensor. GM soon went to the more common 4-wire unit leaving a small market for 3-wire extensions.

you can search my name (mike100) and 02 extension and you might be able to find the list of parts on a post somewhere. I got everything at Napa, but I found some online sources for much cheaper weatherpack connector parts. You will need to buy the crimping tool though.

06-24-2014	#15
mike100 Join Date: Feb 2011 Location: San Marcos CA Posts: 1,786	Re: What do I need for header install? I made my own extensions since the 91 vette uses a 3 wire heated O2 sensor. GM soon went to the more common 4-wire unit leaving a small market for 3-wire extensions. you can search my name (mike100) and 02 extension and you might be able to find the list of parts on a post somewhere. I got everything at Napa, but I found some online sources for much cheaper weatherpack connector parts. You will need to buy the crimping tool though.