breather bolts are often needed to complete the installation

Do not exceed maximum torque specs

and 3/4" thick

This kit contains all components needed to completely rebuild the rockers on the 1930-1948 Big Twin Springers

From Lowbrow Customs

Brass Gas / Oil Filler Cap - Unvented Vendor_Cooper Smithing Co. breather bolts are often neededThese universal filler caps are meant to be used for either gas tank or oil tanks on custom motorcycles, hot rods, or anything else. Lowbrow filler caps fit the maxim 'form follows function'; they are all business. Machined out of solid brass, these non vented caps are 1 5 16" 12 thread and the Buna N O ring seal is gas and oil resistant and keeps your fluids contained, leak free. Lowbrow filler caps fit our weld in steel filler bung or aluminum