Heavy Duty Snow Plow Relay Solenoid for 684-1221-012 56131K SO51189 5794K-1
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Compatible Models
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Heavy Duty Snow Plow Relay Solenoid for 684-1221-012 56131K SO51189 5794K-1
This heavy duty snow plow relay solenoid for 684-1221-012 56131K SO51189 5794K-1 is a direct-acting electrical switch that controls the high-current motor and pump circuits on a snow plow, enabling reliable blade lift and angle operations. This relay solenoid for 684-1221-012 56131K SO51189 5794K-1 is the dependable part for a heavy duty snow plow system.
Overview
This heavy duty snow plow relay solenoid for 684-1221-012 56131K SO51189 5794K-1 is a robust electrical component that engages the plow's hydraulic pump motor. It replaces worn or failed solenoids to restore reliable plow function in severe winter conditions. This heavy duty snow plow relay solenoid is a direct replacement for 684-1221-012, 56131K, SO51189, and 5794K-1 part numbers.
Built For Performance
- Constructed with a heavy-duty zinc-plated steel housing for corrosion resistance and durability
- Sealed electromagnetic coil protects against moisture and road salt intrusion
- High-current copper contacts ensure consistent, low-resistance power transfer
- Standard 12V DC operation integrates with existing plow wiring systems
- Pre-drilled mounting base simplifies installation using existing hardware
Fits These Machines
- for Western snow plows using 684-1221-012 or 684-1221-012-02 solenoid
- for Fisher snow plows using 684-1221-012 or 684-1221-012-02 solenoid
- for SnowDogg plows using replacement solenoid 56131K
- for Blizzard snow plows using SO51189 relay
- for Diamond snow plows using 5794K-1 solenoid
On-The-Job Use
- Used to energize the hydraulic pump motor for raising and lowering the plow blade
- Activates blade angle control circuits for left and right wing movement
- Commonly installed on pickup trucks and SUV snow plow setups in commercial and residential snow removal
Specs At A Glance
| Type | Heavy Duty Relay Solenoid |
| Voltage | 12V DC |
| Part Number(s) | 684-1221-012, 56131K, SO51189, 5794K-1 |
| Compatibility | Most Western, Fisher, SnowDogg, Blizzard, and Diamond plows |
Good To Know
Q: Could this relay solenoid fail due to moisture? A: Yes, moisture and road salt can corrode contacts and cause intermittent operation. A sealed unit like this reduces that risk while maintaining high current flow.
Q: How do I know my solenoid is defective? A: If the plow motor does not run with the controller activated, check for voltage at the solenoid terminals; a click without motor engagement suggests faulty internal contacts.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.