4/5 Pin Towing Maintenance Kit


4/5 Pin Towing Maintenance Kit

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#8026Patent 8,296,893/8,214,961

4/5 Pin Towing Maintenance Kit

(9 customer reviews)

Test, clean and restore male and female 4/5 pin connectors and terminals.

Find A Distributor
For International Customers
Distributor Information

To locate a distributor near you, please call 888-786-7899 or email us here.

International Sales

To place an order from outside of the United States, please call 888-786-7899 or email us here

Price $37.95

In Stock
Ships Within 2 Business Days


Quickly Test, Clean and Repair Truck and Trailer Connections.

The included tester will verify tow vehicle is sending proper signal to the connector, while the cleaning tools remove corrosion and verify proper pin size on both male and female truck/trailer plugs. For use with 4/5 pin connectors.


Features and Benefits:

  • Tests tractor electrical circuits
  • Removes corrosion from truck and trailer connectors
  • Great preventative maintenance tools
  • Enhances electrical contact points and extends harness life
  • Promote safety and limit road hazards
  • Connector cleaners can be used as a pin wear gauge


• 4/5 Pin Trailer Harness Checker (#7866) • 4/5 Pin Connector Cleaners (#8021) • 2 ml Contact Cleaner (#8030)

9 reviews for 4/5 Pin Towing Maintenance Kit

  1. Larry C. Meyer

    Pin Kit This kit was more than what I thought I’d be getting. My connector was in pretty bad shape. By the time I got done using this kit on it, dang near looked new, and I still have enough of the cleaner left to clean it again. I also bought a cover for the connector to prevent it from getting so bad again.

  2. Amazon Customer

    Package deal Package deal

  3. Amazon Customer

    Amazing set of pin cleaners I love this product. I went from having electrical issues on multiple trailers to everything functioning without a single problem.

  4. Don B.

    Functional tool! Have a 60s car with bullit style comnectors. This cleans the contact point very well. A little dialectric grease and back in bidness!

  5. SeaWolf’s Home Workshop Blog

    Does the job. A little over priced for what it does, but you can tell the items are solid quality. The reamer is nice, but probably over made for the DIY who needs it occasionally, but it does the job.

  6. T. Wright

    HIGHLY RECOMMENDED Makes the maintenance of a 4 or 5 flat plug easy. HIGHLY RECOMMENDED!

  7. Boco LWN

    A trailering must have! Sometimes when I buy a product I wonder if the manufacturer used it. For this, it’s a definite YES! I just used this tool kit to clean the 4 pin trailer wiring harness on my Highlander SUV and test it all in about 15 minutes. The pin tester is well built and rugged and the cleaning tool is perfectly sized. All in all, this kit is a good buy as it saves time and effort and helps to take the guess work out of diagnosing. Anybody can use this kit, no experience necessary.

  8. Robert Rehberg

    Five Stars Functions as described. Arrived quick.

  9. MIkeM

    If you own a trailer with lights buy this tool Awesome tool wish I bought one years ago. My lights are working perfectly again.

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Materials: Plastic, Anodized Aluminum
Package Weight: .25 lbs.
Package Dimensions: 6.75" L x 4.75" W x 1" H
Warranty: 1-Year Limited Warranty
CoO: Assembled in the USA of Global Components
Patent 8,296,893 & 8,214,961

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