Cylinder base stud for stock and 3-5/8" bore S&S V-Series and 1984-' 99 Harley-Davidson Evolution engines. 3/8-16 UNC x 6.680", package of 8. Harley-Davidson part number 16837-85C. Note: All reference to H-D part numbers is for identification purposes only. We in no way are implying that any of S&S Cycle's products are original equipment parts or that they are equivalent to the corresponding H-D part number shown. S&S Part #: 31-2321

Cross-Reference: The following OEM numbers are provided for reference only and may not be completely accurate.
Harley OEM Cross Reference Numbers:
16837-85C