Exmark HOC pin part # 126-5401 is used on mowers:
Radius E-Series:
- RAE708GEM48300 (2017) Serial # 400000000-402082299 (4502-911)
- RAE708GEM52300 (2017) Serial # 400000000-402082299 (4502-912)
- RAE708GEM60300 (2017) Serial # 400000000-402082299 (4502-913)
- RAE708GEM48300 (2018) Serial # 402082300-404282614 (4503-533)
- RAE708GEM52300 (2018) Serial # 402082300-404282614 (4503-534)
- RAE708GEM60300 (2018) Serial # 402082300-404282614 (4503-535)
Radius S-Series:
- RAS710CKC48300 (2017) Serial # 400000000-402082299 (4502-914)
- RAS720GKC52300 (2017) Serial # 400000000-402082299 (4502-915)
- RAS740GKC60300 (2017) Serial # 400000000-402082299 (4502-916)
- RAS740GKC60R00 (2017) Serial # 400000000-402082299 (4502-917)
- RAS720CKC52300 (2017) Serial # 400000000-402082299 (4503-146)
- RAS740CKC60300 (2017) Serial # 400000000-402082299 (4503-147)
Radius X-Series:
- RAX651GKA484A3 (2017) Serial # 400000000-402082299 (4502-918)
- RAX691GKA524A3 (2017) Serial # 400000000-402082299 (4502-919)
- RAX730GKA604A3 (2017) Serial # 400000000-402082299 (4502-920)
- RAX651GKA484A3 (2018) Serial # 402082300-404282614 (4503-541)
- RAX691GKA524A3 (2018) Serial # 402082300-404282614 (4503-542)
- RAX730GKA604A3 (2018) Serial # 402082300-404282614 (4503-543)