The genuine Western 49227K-2 2-Way Hydraulic Valve serves as a vital fluid control cartridge within the main valve manifold assembly. Stamped as industry reference SV08-2004 and widely identified as Cartridge 20, this factory-original valve governs the precise release and blockage of high-pressure hydraulic oil. Fleet mechanics install this 2-way cartridge to isolate the lowering circuit, allowing the plow assembly to drop smoothly into float mode or remain locked at a static elevation during transport.
This original manufacturer replacement valve features a precision-honed cartridge body engineered to seat natively on the outer edge face of the manifold manifold block. Positioned as the smallest of the primary hydraulic cartridge valves on standard commercial blocks, this part establishes a tight internal metal mechanical seal. This seal eliminates internal fluid bypass, preventing common field failures such as a slow, uncommanded blade drift, vertical leak-down during transit, or erratic lift cylinder responses. The comprehensive package arrives complete with the factory-matched structural jam nut to secure the valve body into the block casing, creating a vibration-resistant mounting base that limits external fluid weeping.
For commercial contractors and service shop managers, replacing contaminated, scarred, or sticky cartridge valves during standard off-season maintenance preserves maximum hydraulic pressure thresholds and protects matching electronic solenoids. This versatile cartridge operates across the entire modern Western and Fisher fleet, integrating into Western UltraMount and UltraMount2 setups including Midweight, Pro Plow, Pro Plus, MVP Plus, MVP3, WideOut, and Prodigy lines. Utilizing an authentic OEM replacement cartridge prevents sudden midnight hydraulic pressure drops and guarantees your equipment responds immediately to cabin controller commands.
Benefits of the Western 49227K-2 Valve
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Genuine OEM Component: Manufactured to exact factory dimensional tolerances for direct integration into Western and Fisher commercial manifold blocks.
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Stops Internal Cylinder Drift: Precision-machined internal seating stops fluid bleed-by to prevent the plow blade from settling or dropping uncommanded.
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Includes Mechanical Jam Nut: Features a factory-matched retention nut to secure the valve cartridge tightly against high-vibration commercial vehicle inputs.
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Wide Spreader & Plow Integration: Drives main hydraulic lines across modern UltraMount and UltraMount2 straight blades, V-plows, and winged plows.
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Restores Responsive Lowering: Eliminates hydraulic circuit hang-ups and sticky cylinder delays, ensuring smooth transitions into down-pressure float modes.
Additional Info and Common Related Parts
| Part Number | Item Name | Technical Role |
| 49230K-2 | Valve Coil with Spade Terminals | Electrical solenoid coil slides over the cartridge stem to actuate internal mechanical fluid gates. |
| 49229K-1 | 4-Way Hydraulic Valve with Nut | Primary companion cartridge valve (Cartridge 40) handles fluid routing for lift and angling actions. |
| 49330 | Hydraulic Fluid (Gallon) | Premium low-temperature oil required for maintaining optimal system pressure and lift response. |
| 49326 | Dielectric Grease (2 oz) | Recommended insulating compound applied to plug pins to lock out salt spray and prevent terminal oxidation. |
Always refer to your Western Plow’s documentation and vehicle-specific installation instructions to confirm compatibility and proper installation procedures.
Item was as described. Worked well.