7 Way Plug & Socket Cleaning Brush - Shop Tool for 6-Way and 7-Way Contacts - Phillips 4-121 PHI4-121

Before you condemn a cord, clean the connection. This 7 Way Plug & Socket Cleaning Brush from Phillips is the shop tool made for exactly one job: cleaning the corrosion off plug pins and socket contacts, which is the usual cause of intermittent trailer lights. Green, chalky contacts add resistance the driver never sees on a walk-around, so the lights work in the yard, quit on the highway, and come back before the shop can find anything wrong. We stock these heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets, trailer repair shops, and owner-operators nationwide.

Find the Fault in the Contacts: The Phillips Plug & Socket Brush Advantage

This is a purpose-built shop tool, not a wire wheel or a screwdriver pressed into service on a connector that cost real money. It is made for 6-way and 7-way plugs and sockets, so one brush covers both of the connector families sitting in the yard, on the tractors and on the trailers alike. It ships poly-bagged and weighs half a pound, which means it lives in a toolbox drawer, a service truck bag or a road-service kit and is actually there the night the lights quit.

Cleaning the contacts is the cheapest diagnostic step in trailer electrical work and it is the one most often skipped. A brush pass on both halves of the connection can bring a dead or flickering circuit back without replacing the socket, the plug or the cord, and when it does not, you have eliminated the connection and can go looking further up the harness with confidence. At FleetPro Parts & Tires, we stock the tools that keep the parts on the shelf. This shop brush is the direct equivalent of highly searched industry numbers including Phillips 4-121, 5031 and 83-6561.

Vehicle Fitment & Compatibility

This professional shop tool uses a universal design intended for the following commercial applications:

• Make/Model: Universal - Class 8 Trucks, Commercial Trailers and Heavy-Duty Equipment
• Fits: 6-way and 7-way plugs and sockets
• Use: Cleans corrosion off plug pins and socket contacts
• Application: Shop bench, service truck and roadside trailer electrical repair
• Component Group: Air Brake & Wheel / Air Lines, Power Cords & Sockets

Direct Replacement & Cross-Reference Numbers:

This Phillips shop tool serves as a direct replacement for the following part numbers:

• Phillips Interchange: 4-121, 4121
• Additional Interchange: 5031, 83-6561
• Automann Distributor #: PHI4-121

Technical Specifications

• Component Type: Plug and Socket Cleaning Brush
• Use: Cleans corrosion off plug pins and socket contacts
• Fits: 6-way and 7-way plugs and sockets
• Packaging: Poly bag
• Application: Universal
• Weight: 0.5 lbs
• Package Dims: 7 x 2 x 2 in
• Shipping: Parcel Friendly
• UPC: 889626596254
• Product Level: OE (Original Equipment)
• Brand: Phillips (Distributed by FleetPro Parts & Tires)