05091700 – Ariens® / Gravely® Height-of-Cut Dial Knob (Genuine OEM Part) The 05091700 height-of-cut (HOC) dial knob is a genuine OEM replacement designed for use on select Ariens® and Gravely® zero-turn mowers. This knob allows the operator to easily adjust and secure the mower deck cutting height, ensuring consistent cut quality and precise height selection. Manufactured to original equipment specifications, this HOC dial knob provides proper fit, smooth operation, and reliable engagement with the height-of-cut adjustment system. It is a direct OEM replacement and is commonly replaced when the original knob becomes cracked, worn, loose, or missing. Key Details Brand: Ariens® / Gravely®Manufacturer Part Number: 05091700Part Type: Height-of-Cut Dial KnobApplication: Deck cutting height adjustmentOEM Status: Genuine replacement for Ariens® / Gravely® equipment Where Used Used on a wide range of Ariens® and Gravely® ZT XL, ZTX, ZT X, and ZT X Stealth zero-turn mowers, including 42", 48", 52", and 60" deck models, as well as CARB variants. (Installs on the height-of-cut adjustment mechanism to select and lock deck cutting height.)Verify model and serial number for exact fitment before ordering. The 05091700 HOC dial knob delivers proper OEM fit, dependable operation, and long-lasting performance for compatible Ariens® and Gravely® mower models.