Description + Cross References:Meritor: 1A 3211Q4307, 8235A3211Q4307, A3211Q4307RI, ATIA3211Q4307, HRA3211Q4307, TDAA3211Q4307 Additional Info + UPC: 737238629542 Mfr Part Number: A3211Q4307 Bolt Circle Diameter: 8.25 in. Pilot Diameter: 6.75 in.