Harley-Davidson Custom 5 1/2" Air Cleaner Backing Plate
As we understand it, the Factory sold the 5 1/2" air cleaner assemblies as a high-performance, off road accessory item. And like all 5 1/2" OEM accessory assemblies, covers are mounted using the three screw retainers on the plate perimeter.
Plate is patterned for the early Bendix and Keihin assemblies, generally used from 1972-86.
060122 C-6 (21 06 27, 14-55)