Oil Tank Drain Valves and Plugs

One-year-only drain plug and oil line fitting for stock 1937 Big Twin oil tanks. External thread is 3/4”-20. Internal thread is 1/2”-20. Use it for stock banjo type oil lines or custom aplications.

These plugs can be used on oil tanks which have their stripped factory threads re-tapped to an oversize thread.

A conventional oil change is mostly associated with spills and dirty hands. The stahlbus oil drain system has been designed and developed so you can perform an absolutely safe and clean oil change. The stahlbus-oil drain valve will easily replace the existing drain screw. When changing the oil, you unscrew the cap and put on the hose connector via quick release. Only when this is locked, the valve opens and the oil can be drained into the provided container. After removing the connector the valve closes automatically.
The advantages at a glance:
hands do not contact oil , easy operation without tools, no more stripped tank threads, no need to change the gasket,

Flanged steel bungs which can be welded or soldered to gas and oil tanks to screw-in petcocks or drain plugs.