It might be this part number: M177136
You'll have to verify with SN.
Please note it is only the metal lever. The grip and cover are additional part numbers.
4 - Lever
RemarksSUB FOR M174420 OR M164887 OR M161530
2012 JD855D OPS Black Poly Roof, Deluxe Cargo Box, Front and Rear Protection, Power Lift, Front Hood Rack, Rear Screen (homemade), 800 Watt Inverter, 2500lb Winch installed in cargo bed, Front and Rear LED auxiliary lighting (4" square 27 watt), Front and Rear CV Guards, Koplin Side Mirrors