Pipe plug, 1/16-27 NPT as used on standard oil pumps for 1984-1999 big twin engines and S&S V-Series engines and Super Stock 4-1/8" bore cylinder heads. 3/4 Taper, 1/16-27 NPTF x .156".
Dowel pin used in 1984-1999 big twin, SH-Series and V-Series crankcase to cylinder alignment and 4" bore cylinder to head alignment dowel .250" x .500".