TAPPET BLOCK, DRILLED
Part Number 70-5861
Alternate number: 70-4676. This is drilled as used on exhaust, but will also replace undrilled ones as otherwise the same.
70-4676 is same thing: tappet block, inlet and exhaust, pre 1966 (B series, not unit 350/500), but with out oilfeed. Both have oring groove so this one will do intake and exhaust.