These cap nuts thread onto the sump plate studs to hold the sump plate (part #113115181A) to the bottom of the engine case.
They're used on all Type 1 and 3 VW engines.
The nuts are threaded 6x1.0mm like the sump plate studs (#OILSTUD).
They are also used to secure the back rest to the lower seat frame on 1961 to 1968 Beetles.
These nuts fit all 1954 to 1977 Standard Beetles, 1971 to 1979 Super Beetles, 1956 to 1974 Karmann Ghias, 1955 to 1971 Type 2s (Bus, Single Cab, Double Cab), 1962 to 1973 Type 3s (Notchback, Squareback, Fastback), and 1974 to 1974 Things.
Sold as a pack of six. 6 required to do one engine, and 2 required to do one seat. Alt Part #N0110623.
Note: Be aware that oil sump plate cap nuts only require 5 ft/lbs of torque to hold the sump plate in place, according to VW.
Do not attempt to overtighten them.
They will strip, or strip the stud from the case.
If you do have stripped holes in the engine case, you can drill out the stripped hole in the case and install a special stepped stud.
See part #N144521.
California Prop 65 Warning:
Please Note:The information listed below is for stock, unmodified VW's manufactured for sale in the US. VW's are commonly modified and very often parts from another year VW may have been installed on your car. California Pacific JBugs is not responsible for any errors if your car has been modified in any way.