Trying to put the emissions system back together on my '86 GT. Have just about everything working with the exception of the pipe that runs from the air pump diverter valve, back to the air injector tubes just forward of the secondary catalytic converters. I have the actual pipe, but need the Smog Pump Check Valve that connects the pipe to the diverter. As far as I can determine, the part number is E3TZ9A487A. Is this correct? Seems this part was discontinued, but two other part numbers seem to pop up: E8DE9A487AA and E7DZ9A487A.

Just want to make sure I'm getting the right parts. I ordered an Airtex part that said it was a replacement for E3TZ9A487A from Rock Auto, but it doesn't look quite the same.

Thanks for the help,
Tom