Well, that was a swing and a miss.........
part #'s x2161-30600 and x2160-30600
came back as NLA and I got nothing from the dealer search also. The # B7017-B8500
also cme back the same way but from the part # I think that may be for a 620 pickup.
Kelmo
Edit: Datsunitis is right, that 240 one looks very close to the 1200 valve