The genuine Western 99774 Spreader Control serves as the primary electrical cab user interface engineered for Western Fleet Flex® system hopper spreaders. Designed as a direct drop-in component for Western Tornado™, Striker™, and Marauder™ in-bed salters manufactured from 2016 onward, this factory-original electronic control unit provides the operator with total command over material distribution parameters. Commercial winter maintenance contractors and fleet mechanics install this authentic dual-knob controller to replace assemblies with broken internal circuit boards, non-responsive dials, or fractured display screens that interrupt salt spreading management.
This original equipment manufacturer control unit features independent dual-motor regulation pathways to manage material output dynamically. The left-hand variable dial governs the speed of the conveyor chain or feed auger motor to adjust feed volume, while the right-hand dial modifies the spinner motor speed to fine-tune the material broadcast pattern width. Outfitted with a dedicated blast function, the controller delivers an immediate burst of maximum electric power to clear localized material bridging or packed salt jams instantly. The backlit digital display renders real-time speed data and integrated system diagnostics by flashing precise error codes to streamline electrical troubleshooting during active storm shifts.
For fleet supervisors and equipment mechanics, replacing a compromised cab controller with a genuine factory component preserves system functionality and protects the spreader’s main power logic. The control housing includes dedicated onboard integration circuitry to command auxiliary spreader accessories, allowing operators to trigger connected vibrator kits or external strobe work lights directly from the interface keys without routing separate accessory toggle switches through the truck dashboard. This standalone component ships as the bare controller module, allowing technicians to utilize existing truck cab mounting frames to complete the electrical restoration rapidly.
Benefits of the Western 99774 Spreader Control
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Genuine OEM Dual-Knob Unit: Custom-tailored to factory parameters for a direct plug-and-play connection on Fleet Flex system in-bed hopper spreaders.
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Independent Speed Dials: Separate variable speed knobs allow precise, independent fine-tuning of the material feed rate and spinner broadcasting width.
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Instantaneous Blast Mode: Single-press tactile button commands immediate maximum motor voltage to clear heavy material bridging or auger jams.
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Onboard Diagnostic Readouts: Backlit digital screen delivers immediate diagnostic trouble codes to pinpoint electrical harness faults rapidly in the field.
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Accessory Command Logic: Integrated controls allow the operator to cycle standard vehicle vibrators and auxiliary work lighting packages directly from the main interface panel.
Additional Info and Common Related Parts
| Part Number | Item Name | Technical Role |
| 52380 | Fleet Flex Spreader Module | Main rear-mounted electronic logic enclosure that receives cab signals to distribute power to the conveyor and spinner motors. |
| 29221 | Cab Control Wiring Harness | Multi-conductor internal truck-side wiring loom links the in-cab controller directly to the main power feed lines. |
| 49326 | Dielectric Grease (2 oz) | Recommended insulating compound applied inside electrical terminal plugs to seal out road salt brine and prevent oxidation. |
Always refer to your Western Plow’s documentation and vehicle-specific installation instructions to confirm compatibility and proper installation procedures.




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