04894600 – TANK, HYDRO OVERFLOW 700 ML (OEM Ariens / Gravely) The 04894600 Hydro Overflow Tank (700 mL) is a genuine OEM Ariens / Gravely reservoir used in the hydrostatic drive system on many Gravely commercial and residential units. This tank serves as the overflow / expansion reservoir for the hydraulic (hydro) system—helping manage fluid expansion, capture overflow, and support clean, consistent hydro operation. If your current tank is cracked, leaking, discolored/brittle, or contaminated, replacing it helps protect your hydro system and keeps fluid levels easier to monitor. Product Details OEM Part Number: 04894600 Description: Tank, Hydro Overflow – 700 mL Brand: Ariens / Gravely Capacity: 700 mL (0.7 L) Application: Hydrostatic / hydraulic overflow reservoir (expansion tank) Condition: New, Genuine OEM Why Replace It? Stops leaks and prevents hydro fluid loss Helps keep the hydro system clean and properly vented Restores safe, reliable operation (especially under heat/load) OEM fit for correct mounting and hose routing Where Used / Fits Models Used in the Hydro Tank / Transaxles sections for various models, including: Gravely Pro-QXT Tractor (985910, 985911) Compact-Pro 34 / 44 (991144, 991145) Pro-Turn series (examples: Pro-Turn 252 / 260 / 260 EFI / 272 / 452 / 460 / 472, Mach One—varies by serial range) Pro-Stance series and Pro-Stance Ultra models (varies by serial range)
