Western Digital 56131K Snow Plow Motor Relay

Name: Western Digital 56131K Snow Plow Motor Relay
Brand: Western Digital
SKU: 56131K

★★★★★4.5 (32 reviews)

Direct OEM replacement relay solenoid for Western Unimount and UltraMount plows — same fit, same function, no modification required.

$43.75*

✓ In Stock on Amazon.com

View on Amazon

*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

When a Western plow motor relay fails mid-storm, the 56131K replacement gets the blade moving again without a dealership visit or a long wait on OEM parts. This solenoid is purpose-built to replace Western part numbers 56131K, 56131K-1, 25634, and 56131 — the motor relay used across Western's Unimount and UltraMount quick-attach plow systems. The normally open, automatic-operation configuration mirrors the factory setup exactly, so you're swapping like-for-like without touching the harness or consulting an electrician.

The installation is accessible to anyone who does their own plow service: remove the failed solenoid, transfer your connections to the replacement, and you're back in the seat. The relay is rated for the high-current, cold-weather duty cycle that plow motor control demands — repeated switching loads at temperatures well below freezing. As with any solenoid in this service environment, keeping the mounting area clear of packed road salt and ensuring terminal connections are tight and corrosion-free will get the most out of the part season over season.

Key Features

FITS MODELS - Will work with Western Unimount and UltraMount Plows.

REPLACES OEM# Western 56131K, 56131K-1, 25634, and 56131

Specifications

Brand

Western Digital (Western)

Model

56131K

Contact Type

Normally Open (NO)

Operation Mode

Automatic

Replaces OEM

Western 56131K, 56131K-1, 25634, 56131

Compatible Plow Systems

Western Unimount, Western UltraMount

Pros & Cons

👍 Pros

Direct plug-in replacement for four Western OEM part numbers — no fitment guesswork if you're cross-referencing an existing failed part.
Normally open automatic operation matches the factory electrical configuration exactly, eliminating any need to rewire or adapt the harness.
Covers both Unimount and UltraMount platforms, making it a useful spare to stock if you run multiple Western plows.
Simple bolt-on installation accessible to any operator comfortable doing basic plow maintenance in the field.

👎 Cons

Fitment is limited to Western Unimount and UltraMount systems — not compatible with Fisher, Boss, or other brand plows despite similar solenoid form factors.
No installation instructions are included in the listing; first-timers will need to reference Western service documentation or a wiring diagram for their specific plow harness.
Terminal and mounting hardware are not listed as included — confirm your existing hardware is reusable before installation to avoid a second parts run.

Frequently Asked Questions

Which Western plow models does this relay fit?

This relay is confirmed to fit Western Unimount and UltraMount plow systems. If you're unsure of your plow type, check the mounting frame or the original solenoid housing — Unimount and UltraMount are Western's two primary quick-attach platforms.

What OEM part numbers does the 56131K replace?

It directly replaces Western OEM numbers 56131K, 56131K-1, 25634, and 56131 — the full range of Western motor relay solenoids used across these platforms, so cross-referencing your existing part number against that list will confirm compatibility.

Is this relay normally open or normally closed, and does that match the factory configuration?

The relay operates in normally open (NO) mode with automatic operation, which matches the OEM Western factory configuration. No wiring modification or relay base swap is required.

What tools do I need to swap this relay, and how involved is the installation?

Replacing a plow motor relay is straightforward — a basic socket set to remove the solenoid mounting hardware and a terminal screwdriver for the spade or stud connections is typically all that's needed. The direct OEM fit means no bracket fabrication or wire splicing.

Will this relay hold up to repeated plowing cycles and cold-weather operation?

The relay is designed for winter plow service, which means repeated high-current motor switching in sub-freezing conditions. As with any solenoid in this application, keeping the terminals clean and protected from road salt will extend service life.