The genuine Western 49211 Hydraulic Pump Kit serves as the core internal pressure-generating gear block built for the electric solenoid plow pump assembly. Engineered explicitly for Western Isarmatic Mark III UniMount systems, late conventional vehicle mounts, and equivalent Fisher electric pump configurations with an internal lift ram, this original equipment manufacturer gear pump converts rotational energy from the electric motor into high-velocity hydraulic fluid flow. Commercial snow contractors and fleet mechanics install this factory-authorized internal pump kit to replace worn, scored, or pressure-fatigued gear pump elements that cause slow lift cycles or total blade response failure during critical midnight snow clearance.
This complete factory-original overhaul kit includes the internal hydraulic gear pump, a standard suction filter, a matching mounting gasket, a specialized fluid-sealing O-ring, hex cap mounting screws, and a 3/8-inch square plug. The gear pump features precision-machined internal tolerances designed to generate the precise volumetric displacement needed to actuate lift and angle functions flawlessly. Because this is an authentic OEM assembly, it matches original hydraulic block clearances perfectly, eliminating the high-frequency vibration, internal cavitation, and fluid foaming issues common with generic aftermarket remanufactured alternatives.
For professional ice removal fleet managers and shop supervisors, replacing an inefficient or internal-bleeding gear pump during standard shop servicing restores the plow’s original high-pressure thresholds. Operating an original manufacturer-grade pump kit ensures clean, smooth fluid dynamics, protecting matching electronic solenoid cartridge valves and heavy-duty electric motors from secondary thermal overload. Keeping this internal assembly properly sealed ensures your legacy UniMount or conventional blade satisfies commercial clearing standards throughout rigorous winter storm seasons.
Benefits of the Western 49211 Hydraulic Pump Kit
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Genuine OEM Hydraulic Pump: Manufactured to exact factory specifications for a perfect internal fit inside Western Isarmatic and Fisher pump blocks.
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Complete Installation Bundle: Contains the internal gear pump, suction fluid filter, sealing gasket, O-ring, hex bolts, and square plug.
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Restores System Line Pressure: Eliminates slow lifting or laggy angling tracking to keep your commercial blade responsive under heavy snow loads.
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Precision-Machined Tolerances: High-precision manufacturing ensures uniform fluid flow while minimizing cavitation and excessive internal heat build-up.
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Protects Driving Motors: Reduces overall mechanical drag to extend the life of your 12V DC electric motor and battery alternator setup.
Additional Info and Common Related Parts
| Part Number | Item Name | Technical Role |
| 56133 | Electric Motor UniMount | Heavy-duty 12V DC replacement electric motor drives the 49211 hydraulic gear pump shaft. |
| 49330 | Hydraulic Fluid (Gallon) | Premium low-temperature oil required for maintaining optimal system pressure and lift response. |
| 25205K | 1.5″ Cylinder Packing Seal Kit | Replacement packing gland and seal kit to rebuild internal lift ram assemblies and prevent oil leakage. |
| 49326 | Dielectric Grease (2 oz) | Recommended insulating compound applied inside electrical terminal pins to block winter road salt and seal out moisture. |
Always refer to your Western Plow’s documentation and vehicle-specific installation instructions to confirm compatibility and proper installation procedures.
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