Unused OEM NOS American Motors (and probably also Jeep) 1979+ 4 cyl Exhaust Emission Backfire Diverter Valve.  Made by Carter (see photo).  

AMC part #3223634 / BPV-6619S

PLEASE KNOW WHAT YOU ARE BIDDING ON as all sales are final.  Buyer pays ACTUAL shipping according to size/weight/location.