Rear differential screw in vent fitting.
100% correct part like the original.
Fits in the rear end housing on the drivers side top.
This is the short style for use with all rear brake hoses with the attached bracket. This includes all models except the 65-66 single exhaust style (that hose uses a block and requires the longer style fitting).
Ours even includes the proper external tooth lock washer.
Made in USA