epr 2pk deck wheel compatible with kubota 14473 zd321 zd326 with 60" 72" decks k5668-42100 epr distribution replaces oem# - kubota k5668-42100. fits models - kubota: zd321 and zd326 with 60" and 72" decks. | | | specifications - hub: 3 5/8", centered bore: 5/8", outer diameter: 5".