This part is commonly Used on models:
74310 Z Master 8000 Series Riding Mower, with 42in Direct-Collect Cutting Unit
74315 Z Master 8000 Series Riding Mower, with 42in Cutting Unit
74316 Z Master 42in 8000 Series Riding Mower
74318 Z Master 42in 8000 Series Riding Mower
NVS640CKC42000 Navigator
NVS740CKC42000 Navigator
NVS740GKC42000 Navigator
NV730EKC42 Navigator
NV640KC42 Navigator