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Curt Mounting Bracket for 4-Pole Flat Trailer Connector
CURT

Curt Mounting Bracket for 4-Pole Flat Trailer Connector

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Attach your trailer connector mounting bracket to your vehicle. Simply bolt this sturdy steel bracket to your trailer hitch, bumper, or vehicle's frame. Use with a no-drill mount (18136 or 18140) for an even easier installation. 1-800-940-8924 to order CURT accessories and parts part number C42CR or order online at etrailer.com. Free expert support on all CURT products. Great prices and Fastest Shipping for Curt Mounting Bracket for 4-Pole Flat Trailer Connector. Accessories and Parts reviews from real customers.
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  • Reviews (1298)
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CURT Accessories and Parts

  • Trailer Wiring
  • Mounting Hardware
  • Brackets
  • CURT
  • 4 Flat

Attach your trailer connector mounting bracket to your vehicle. Simply bolt this sturdy steel bracket to your trailer hitch, bumper, or vehicle's frame. Use with a no-drill mount (18136 or 18140) for an even easier installation.


Features:

  • Attaches to trailer hitch to provide mounting point for 4-Way flat trailer connector
    • Provides space necessary to mount large trailer connector
  • Installs directly to your hitch, bumper, or vehicle's frame
    • Works with no-drill mounting brackets (18136 or 18140) for even easier, reversible installation
      • Installation hardware is not included
  • Durable steel construction
  • Black powder coat finish resists corrosion
  • 1-Year limited warranty


  • Specs:

    • Overall dimensions: 2-1/4" wide x 1-3/4" tall x 1-1/4" deep
    • Diameter of mounting hole: 1-5/16"


    Dimensional Diagam



    58300 Curt Wiring Connector Attachment Bracket for 4-Way Flat Socket - Steel - Black Powder Coat Finish

    Similar to Tow Ready 18144

    Item # C42CR





    Customer Satisfaction Score:

    Ratings & Reviews

    4.6

    1298 reviews
    5 Stars
    (1029)
    4 Stars
    (126)
    3 Stars
    (61)
    2 Stars
    (33)
    1 Star
    (49)
    Review sort icon
    Attach your trailer connector mounting bracket to your vehicle. Simply bolt this sturdy steel bracket to your trailer hitch, bumper, or vehicle's frame. Use with a no-drill mount (18136 or 18140) for an even easier installation.

    by:

    Easily installed and fits the wiring harness nicely.



    by:

    This will be the last part to complete my installation. I will have to go to the hardware store to get some self tapping screws!



    by:

    Best online buying experience I’ve ever had!! Quality products, great value, everything fit perfect, delivered on date it said. I will definitely recommend etrailer to friends and family!!



    by:

    It’s a must have when installing all new equipment. If it came with better mounting hardware it would be a solid 5 stars. I used my own so not a huge deal but if I didn’t have it I would’ve had to make a special trip to finish the installation. Works great though



    by:

    The bracket did not come with screws to attach it to the trailer hitch. Other than that, it was easy to order, was received faster than projected, the price was good and the quality seems to be good.



    by:

    Each item is performing as designed. No issues at all. As I recall, the installation from the ground was extremely easy.



    by:

    Did what it was supposed to do but does not come with any hardware.This bracket should be included with the wiring kit but was not so had to order it separately and pay for shipping again on a measly little bracket.



    by:

    Apparently if your car is wired for a trailer, you have the tow package. I asked the dealer if I could get a Trailblazer with a tow package and he said “No” which lead me to order the wrong wire harness.



    by:

    Pretty simple install. I have dual exhaust on my Outback and found it easiest to remove both mufflers for installation. Curt only provides 2 of the guide wires for the bolts. I used one on each side and also a rubber band on each side to secure the bolts while positioning the hitch. This worked really well, try it yourself.



    by:

    Perfect kit for my 2007 Tacoma. Perfect lenght wires. Electronic module stores away up high in the tail light so no salt water invasion. Self cutting ground screw mad a perfect ground right beside the module. Awesome!Easy. Hope it lasts! Seeems solid wiring and mechanical wise.



    by:

    $7 plus shipping for a bracket that should be inluded with the hitch receiver to begin with, add to that the cost of finding out there's NO hardware to attach it and having to drive to a hardware store...



    by:

    Quick and speedy delivery item is exactly what I needed and expected. I’ve purchased a few items now from etrailer and have not been disappointed on any part of the process. From finding the item I need or the ordering process to delivery to my intended location it was flawless thanks etrailer.



    by:

    This is an exact fit replacement for the 4-flat wiring harness mounting bracket on an OEM Toyota trailer hitch for the 2019-2025 Toyota RAV4.



    by:

    I wish it would have had a covering over the wires. Guessing over time any places the the harness rubs will end up wearing through to bare wires. Also, the bracket didn't come with screws that it showed when I ordered it. Being a product designer, I was able to figure something out. Overall satisfied though.



    by:

    When plugging in the trailer lights to the tail that is supposed to be fixed in this mount, it pushes out unless I hold it backing it up with my hand



    by:

    The 4 pole mounting brack was easy to install and made for professional looking install for the connector.



    by:

    I ordered the hitch and wiring harness for my dad who lives 623 miles away. I sent him the link to the video, he viewed it with one of our cousins. They received the parts at 12:40pm and I just got off the phone with him and it was already installed at 3:00pm he was very happy with the speediness of receiving the part and the helpfulness of the video. Thank you William S. and etrailer.



    by:

    It's a nice bracket that cleans up the wiring installation, but as already state in the reviews it does not come with mounting hardware so I had to use a tap and die set to property mount it to the hitch. Because of the previous reviews I was prepared.



    by:

    After it was not included with the original order, I call etrailer to mention this and the wiring harness were not packed even though the pkg clearly states it was. Since the connector was not sent originally I told them to just send the wiring harness and I no longer wanted the mounting bracket. Supposedly the wiring harness has been shipped however I was never refunded for the cost of the connector. Very disappointed



    by:

    It's a bracket so not much to go wrong. Would have been nice if the kit included some stainless mounting hardware.



    by:

    Love it. Makes the job look professional, no wire hanging down or attached to the hitch.

    Brooke M. profile picture
    Etrailer Expert

    Brooke M.

    4/29/2025

    No clutter is the way to go for sure! It looks great!

    Steve profile picture

    Steve

    4/28/2026

    Great!



    by:

    Well made but did not fit without interfering with the bumper on my 2023 Highlander XLE. However, I did reconfigure it with the Short Curt No Drill Trailer Connector and mount it vertically and this seems to work just fine.



    by:

    Looks great, easy install direct to hitch cross piece.

    Claire H. profile picture
    Etrailer Expert

    Claire H.

    7/14/2026

    Looks great! Always super helpful to keep those wires up and out of the way



    by:

    Trying to plug in my trailer harness (brand new) or my tow dolly lights is extremely frustrating because the plug for my Curtis trailer harness for my 2018 Pacifica is slightly Mia made. Pretty disappointed as the harness was $[XX].



    by:

    Installed the hitch and wiring on my 2025 Maverick XL eco boost. Was easy enough using Etrailers instructional video. I would def recommend if you bought your Mac without the hitch..use this one!

    Lazer S. profile picture
    Etrailer Expert

    Lazer S.

    4/21/2026

    Glad we could help, Juan! What are you going to be towing?


    25
    25

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