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Knox Trailers · Electrical & Lighting
258188
In stock · ships from Knoxville
This is a 4-way male plug with a spring strain relief, commonly used on the tractor side of a tractor-trailer electrical connection.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
It transfers power for trailer lighting functions (tail, turn, and brake lights) from the truck to the trailer via four wires secured by internal set screws. An external clamp screw holds the wire bundle in place, and the spring protects the cable from damage at the plug entry. When replacing this plug, it's important to photograph the existing wire positions to ensure correct reconnection and proper light operation.
Part Number: 258188
4 WAY PLUG W/SPRING
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting
