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Description
485839 – Hydraulic Pump Assembly (Genuine Scag OEM Hydraulic Pump)
The Scag 485839 Hydraulic Pump Assembly is a genuine OEM replacement hydraulic pump engineered to deliver smooth, reliable hydrostatic drive performance for compatible Scag commercial zero-turn mowers. Manufactured to Scag's exact factory specifications, this precision-built hydraulic pump provides consistent hydraulic pressure and fluid flow, ensuring responsive steering, smooth acceleration, and dependable traction in demanding commercial mowing applications.
Built with a heavy-duty cast aluminum housing and precision-machined internal components, the 485839 Hydraulic Pump is designed to withstand continuous operation, high hydraulic pressures, and harsh outdoor environments while maintaining maximum efficiency and long service life.
Product Details
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Part Number: 485839
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Brand: Scag
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Part Type: Hydraulic Pump Assembly
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Function: Supplies hydraulic pressure for the hydrostatic drive system
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Housing Material: Heavy-Duty Cast Aluminum
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Installation: Direct OEM Replacement
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Genuine Scag OEM Part
Key Features
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Genuine Scag OEM hydraulic pump
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Precision-engineered for smooth hydrostatic performance
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Heavy-duty cast aluminum construction
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Provides consistent hydraulic pressure and flow
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Delivers responsive steering and drive control
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Built for demanding commercial mowing applications
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Direct replacement with no modifications required
Function
The 485839 Hydraulic Pump Assembly serves as the primary hydraulic pressure source for the mower's hydrostatic drive system. It converts engine power into hydraulic energy, supplying pressurized fluid to the wheel motors for smooth forward and reverse movement, responsive steering, and reliable traction across varying terrain.
Compatible Equipment
The Scag 485839 Hydraulic Pump Assembly fits selected Scag commercial zero-turn mowers equipped with compatible hydrostatic drive systems.
Always verify your mower model, serial number, hydraulic system configuration, and illustrated parts diagram before ordering to ensure proper compatibility.
Who Is This For?
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Commercial landscapers
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Lawn care professionals
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Municipal grounds maintenance crews
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Golf course maintenance departments
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Equipment repair technicians
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Scag equipment owners
Recommended Property Size
Ideal for maintaining:
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Large residential estates
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Commercial landscapes
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Golf courses
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Municipal parks
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Sports complexes
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Schools and universities
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Industrial facilities
Pros
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Genuine Scag OEM quality
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Smooth and reliable hydrostatic performance
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Heavy-duty cast aluminum construction
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Precision-machined internal components
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Excellent durability under commercial use
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Factory-correct fit
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Long service life
Cons
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Compatible only with specified Scag hydraulic drive systems
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Hydraulic oil and filters should be serviced according to the manufacturer's maintenance schedule to maximize pump life
Comparison – Scag 485839 OEM Hydraulic Pump vs Aftermarket Hydraulic Pumps
Scag 485839 Genuine OEM Hydraulic Pump
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Exact OEM hydraulic specifications
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Precision-engineered for Scag equipment
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Superior efficiency and reliability
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Heavy-duty commercial construction
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Long-lasting hydraulic performance
Aftermarket Hydraulic Pumps
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May vary in flow rate and pressure output
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Variable machining and component quality
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Potential fitment or performance differences
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Reduced service life under demanding commercial conditions
Why Buy from Barry's Power Equipment?
Barry's Power Equipment is an authorized Scag dealer offering genuine OEM Scag hydraulic components backed by expert customer support.
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Genuine OEM Scag replacement parts
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Fast nationwide shipping
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Competitive pricing
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Expert technical support
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Extensive inventory for Scag, Hydro-Gear, Parker, Briggs & Stratton, Kawasaki, Kohler, Honda, Ariens, Gravely, Toro, Exmark, Ferris, Hustler, Cub Cadet, John Deere, STIHL, and many other leading outdoor power equipment brands.


