Description + Cross References:Meritor: 1A 3211Y6681, 2504790C91, 8235A3211Y6681, ATIA3211Y6681, TDAA3211Y6681 Additional Info + UPC: 680502122471 Mfr Part Number: A3211Y6681 Bolt Circle Diameter: 7.25 in. Pilot Diameter: 5.50 in.