Replacement center crankcase bolt for stock 1999-11 Harley-Davidson® crankcases with S&S 4 inch bore cylinders installed. Middle section is narrower (waisted) to allow clearance for the larger cylinder spigots. 5/16-24 X 5" X .200" grade 8, zinc plated.
Harley-Davidson® part number 3430.
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.