You are buying.  K&N Universal Performance Air Filters  RU-5107 Universal Clamp-On Air Filter

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Summit Racing Part Number:
KNN-RU-5107
UPC:
024844373496
Air Filter Type:
Oiled
Air Filter Style:
Conical flanged
Inlet Flange Inside Diameter (in.):
6.00
Air Filter Height (in.):
6.50
Air Filter Top Measurement:
4.500 in. diameter
Air Filter Bottom Measurement:
7.500 in. diameter
Air Filter End Cap Material:
Rubber
Air Filter End Cap Color:
Black
Filter Material:
Cotton gauze
Filter Color:
Red
Quantity:
Sold individually.
Notes:
Centered 0.625 in. long flange.