Serving Hobbyists for Over 50 Years
If you have an early 28 oil pan, these are the bolts and lock washers needed to mount the clean-out to the pan. U.S.A.
The 1928 oil pans had a clean out on the oil pan directly under where the oil pump is.
Only used on the early pans that had the clean-out plate on the bottom that allowed you to drop the pump without removing the oil pan.