bing tracking image
  1. Accessories and Parts
  2. CURT
  3. Trailer Wiring
  4. Mounting Hardware
  5. Brackets
  6. 4 Flat
Curt Mounting Bracket for 4-Pole Flat Trailer Connector
CURT

Curt Mounting Bracket for 4-Pole Flat Trailer Connector

Part Number: C42CR
In Stock
$1.94
Retail:$10.83
You Save: 82%
Accessories and Parts
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
By submitting this form, you understand and agree to our Terms of Sale, Website Terms of Use, and Privacy Policy.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Customer Photos

Need help with installation?
Locate installers near me
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.
  • All Info
  • Reviews (991)
  • Q & A (0)
  • Photos

CURT Accessories and Parts - C42CR

  • 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




    California residents: click here


    Customer Satisfaction Score:

    Ratings & Reviews

    4.6

    991 reviews
    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:

    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:

    Parts are fine. Used the website, ordered what it said I need and it’s the wrong one, the connectors are not correct to attach to the tail lights. Asked about a return and am told I have to pay for shipping. I am wanting to get the correct kit and would buy it from them, but I strongly disagree with paying for shipping to return a part their system said would work.



    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?



    by:

    Bracket is heavy duty and well made. May be mounted anyplace convenient.

    James profile picture

    James

    4/16/2026

    Taillight kit has been excellent. Nice clean installation on my vehicle that I was able to do myself.



    by:

    Great for holding the trailer connector where you need it. Easy to install, especially with 2 zip ties.



    by:

    The mounting bracket was easy to install. I am disappointed that it does not hold the 4 Pole Flat Connector very strong. When I attempt to attach the connector from the trailer to the connector held in the bracket, the connector will push out the back of the bracket.



    by:

    Product was outstanding but the packing could be improved. When my shipment arrived, the UPS guy was apologizing as the container fell apart. All the staples did not keep the container intact. It would help to have strapping around the box. Hitch was good but had to touch up paint so not to rust.



    by:

    The bracket is as described and properly fits the trailer plug as designed. I was disappointed that the item did not include any fasteners or mounting hardware such as wire ties. All you get is the single bracket.



    by:

    Great value for a name brand. No fasteners included but pairs great with the no-drill long mount bracket 18136.



    by:

    Tried another product from Amazon that failed twice. The quality of this unit is excellent and installation is simple with excellent instructions.



    by:

    Worked as it should. Easy install but the plug fits pretty tight into this bracket (as it should).The black finish was really good and did not seem to be cheap. I would recommend this plug mount for the price.



    by:

    Great product, etrailer is the best!

    William profile picture

    William

    2/16/2026

    It is still working great after a year, it has been a great investment.



    by:

    Fits perfect, holds the wiring connector and looks great.



    by:

    Excellent value for a great product! I love how it hides so well under the rear bumper/fascia. They include everything you need for a complete install. Fast shipping and great follow up. The website is so easy to navigate.



    by:

    They continue to call me the wrong name, including putting a completely DIFFERENT name on the address portion of the shipping label. It showed up to the house with someone else's name on it which I should have denied. How and why does this continue to happen?



    by:

    All parts were in stock, located and shipped in a very timely manner. The representative was friendly and knowledgeable about the products which fit perfectly. Looks great! Thank you Cassie at etrailer.com



    by:

    light harness worked great!!! Very easy to install!!! I would buy again



    by:

    I was very happy with the availability of the class III hitch and wire harness kit for my Bronco Sport. I was also very happy with the quick turn around to get my order shipped. The parts fit perfectly. I will us etrailer.com again should the need arise. Thank you etrailer.com.



    by:

    Bracket installed easily and the trailer plug fit well. Bracket is sturdy …. Holding up fine … no rust

    John S. profile picture

    John S.

    7/19/2025

    Very sturdy product .. been over a year now and still no rust. No complaints



    by:

    Item looks great and feels very sturdy! Great price and quick shipping!



    by:

    BRACKET IS GREAT. MAYBE INCLUDE SOME SCREWS OR ZIP TIES TO ATTACH?



    by:

    This hold the connector perfectly



    by:

    Easy and simple. Only gave 4 stars because item did not come with mounting bolts. Easy fix with bolts I had on hand. No drilling required because it was compatible with the Draw Tite Class III (76034) I also purchased from etrailer.

    Javi profile picture

    Javi

    3/10/2022

    No issues since the day I mounted it.



    by:

    Fits and looks good

    Jeff profile picture

    Jeff

    4/10/2026

    Happy with the paint job,very little rust after a year No issues



    by:

    Bracket will give the installation a nice, professional touch.


    25
    991
    Show More Reviews

    See what our Experts say about this CURT Accessories and Parts

    • Recommended Hitch for a 2023 Lexus RX 350
      The Draw-Tite item # DT73QR installs below the bumper. This hitch is perpetually backordered due to Draw-Tite being bought out so I have a way better option for a hitch for your 2023 Lexus RX 350. I recommend the Curt Trailer Hitch item # C29VV. This hitch is custom fit and bolts to your Lexus with included hardware. I really like this hitch because the crosstube mounts behind your rear bumper leaving only the 2" receiver visible. This not only looks better it also helps with ground clearance....
      view full answer...
      Image 1 for Image 2 for
    • Does the Curt Trailer Hitch item # C13382 Fit a 2024 Subaru Crosstrek?
      Yes, it is accurate. The Curt Trailer Hitch item # C13382 is confirmed to fit all models of the 2024 Subaru Crosstrek except for the hybrids. There was a customer that recently installed this on a 2024 with no issues back in May and he sent me in a picture which I have attached below. No modification or customization needed. It went right on his Subaru. If you are planning on towing you will also need a wiring harness item # C56040 and a ball mount kit item # C45534. I recommend using...
      view full answer...
      Image 1 for
    • Recommended Hitch and Wiring Harness for a 2022 Toyota Highlander
      Hey Joseph! The Curt item # C45CR requires you to disconnect an exhaust hanger temporarily, but it gets reinstalled a couple steps later. It's just to get the hitch to the mounting bolts behind the muffler. This hitch is custom fit for the 2022 Toyota Highlander and fits all models including your Platinum. For a 4-way wiring harness, you'll want the T-One Vehicle Wiring Harness item # TK99FR. This custom fit harness plugs directly into the existing wiring of your Highlander without requiring...
      view full answer...
    • Looking For Brackett For 4-Pin Flat Connector
      Hey Dennis, thanks for reaching out. Yes we do have a braket for attaching the 4-flat plug to the car. For that I recommend the following: - Curt Mounting Bracket for 4-Pole Flat Trailer Connector # C42CR What most people do it use self-tapping screws to attach to the crosstube of the hitch. That or you can use a small bolt and nut to attach it to the bottom of the bumper. I've included a few pictures of examples. What kind of trailer will you be towing?
      view full answer...
    • Will The Curt Mounting Bracket C42CR Match Up With The Curt No-Drill Bracket C57202?
      Hey Mike, thanks for reaching out. Yes, it will! The Curt Mounting Bracket for 4-Pole Flat Trailer Connector # C42CR will match right up with the Curt No-Drill Bracket # C57202. You won't have to drill any new holes. The picture I included shows the two being used together. The part 18136 you mentioned is an older part number that has been discontinued, but the Curt # C57202 is a direct replacement for that. The two are dimensionally identical. What kind of trailer will you be hauling?
      view full answer...
    • Recommended Hitch and Wiring Harness for a 2002 Mitsubishi Montero
      Hey Rene, thanks for the information. To add a hitch to your 2002 Mitsubishi Montero, you'll want the Curt item # C13800. This is a class III, custom fit hitch with a 2" receiver, that includes all necessary hardware to bolt onto your Montero. It will not fit the Sport models and I do not have an option for a hitch that does. For a wiring harness, I recommend the Curt T-Connector item # C55380. This custom-fit T-connector plugs into your Mitsubishi's wiring harness, which is located behind...
      view full answer...
    • Can I Still Use the Kick Sensor when I Install the Draw-Tite Hitch on My 25 Toyota Grand Highlander?
      Hello Gene, Yes, your kick sensor will still work after installing the Draw-Tite Max-Frame Trailer Hitch Receiver - Custom Fit - Class III - 2" # DT95PR. It might block the sensor slightly, so you may need to kick your foot to the right or left of the receiver to find the sweet spot, but it will still function. If you're looking for some wiring to pair with the hitch for light towing or a hitch-mounted accessory, you'll want the Curt Powered Tail Light Converter with 4-Pole Flat Trailer...
      view full answer...
    • What do I Need for My 2021 BMW X3 M40i so I Can Tow a 6x12 Trailer to Move to a Different State?
      Hello Michael, Happy to get the right tow package together for your move to a different state. I would like to mention that just because the hitch is rated for a specific weight does not mean your car can tow that much, you will need to check your owners manual to see what BMW says you can tow, you are only as strong as your weakest link. The highest rated hitch we for your 2021 BMW X3 M40i is the Draw-Tite Max-Frame Trailer Hitch Receiver - Custom Fit - Class III - 2" # 76226. For...
      view full answer...
    • 2019 Hyundai Ioniq Plug-In Hybrid Wiring Kit Recommendation for Thule Bike Rack Tail Lights
      We do! I recommend picking up the Tekonsha T-One # 118758 for your 2019 Hyundai Ioniq Plug-In Hybrid and securing it by your hitch receiver with the mounting brackets # C42CR and # 18140 so the 4-Way is easily accessible. If you have the Thule Epos bike rack then you're needing the License Plate and Tail Light Kit # TH79XE, otherwise I recommend going with the Curt Auxiliary LED Indicator Lights # C53201 since they come with an adhesive that makes them quite easy to install. If you don't...
      view full answer...
    • 4-Way Mounting Bracket to Use with 2024 Hyundai Tucson with Curt Hitch and Wiring
      Hey Ed, I would go with the part # C42CR for a 4-way bracket to use with the # CU94FR and hitch # C94WR. You'll attach this to the lower bumper edge of your Tucson and it will give it a nice and secure place to mount the 4-way. What are you towing?
      view full answer...
    • Does the Curt Hitch C13409 Block the Liftgate Sensor on a 2025 Subaru Forester?
      Hey Will thanks for the question! The Curt Hitch item # C13409 is compatible with the automatic tailgate switch on your 2025 Subaru Forester. You'll lose some of the sensors range around the 2" receiver but you're not going to want to be kicking in that area anyways once you get it installed. What do you plan on using your hitch for? If you are planning on towing you will also need a wiring harness item # C56040 and a ball mount kit item # C45534. I recommend using the No-Drill Mount...
      view full answer...
    • Can I Install Both a Flat Towing Wiring Harness and a 4-Way Connector on a 2018 Jeep Wrangler JK?
      Yes, so long as you don't try to use both of them at the same time. The Curt T-Connector Vehicle Wiring Harness item # C55124 will work as a 4-flat connector and plugs into your Jeep's existing wiring. If you try to flat tow your 2018 Jeep Wrangler JK with say a bike rack on the back or a cargo carrier that has lights on it then the 4-flat connector will not work, only the Hopkins item # HM56200. The Curt item # C55124 is confirmed to fit the 2018 Jeep Wrangler JK's without the towing...
      view full answer...
    • 4 Flat Bracket That Attaches To The Blue Ox Hitch BLU73UR On A 2022 Subaru Crosstrek
      Hi Trevor! I wasn't sure if you meant a 4-flat wiring harness or the bracket to mount a 4-flat (or both), so I included options for both! : P Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56040 Curt Mounting Bracket for 4-Pole Flat Trailer Connector # C42CR The wiring bracket on the # BLU73UR hitch you ordered for your 2022 Subaru Crosstrek (non Hybrid) measured a smidge over 1.5 inches center to center on the mounting holes (1.58 inches to be exact)....
      view full answer...
    • Can A No-Drill Bracket Be Installed On A Hitch With A Square Crosstube?
      Hey Rogelio, thanks for reaching out. It is totally fine to use a no-drill bracket like part 18140 on a hitch with a square crosstube. People do it all the time and it works out fine. It's basically a hose clamp and once you tighten it, it can secure just fine to a round or square tube. I've included a picture that shows what this looks like. That said, both of the part numbers you mentioned are for older parts that have been discontinued, but we do have available alternatives. Take a...
      view full answer...
    • Trailer Wiring Mounting Bracket for Curt Hitch for 1992 Jeep Cherokee
      Hey Ralph, for all of the hitches we offer for your 1992 Jeep Cherokee including the Curt # 13084 there isn't an option that has a trailer wiring mounting bracket built in BUT we can still help. Instead you'd want a bracket like the part # C42CR which you would attach to the lower rear bumper of the vehicle. Do you have a 4-way currently?
      view full answer...
    • Is there a 12" 4 Flat Extender that will Fit in the Curt Mounting Bracket for 4 Pole Flat?
      Hello Tnf, Since your Reese extension will not work, I would go with the Hopkins 4-Pole Loop - 12" Long # HM48145. The Hopkins has a slimmer design so it will be able to fit in the Curt Mounting Bracket for 4-Pole Flat Trailer Connector # C42CR. What kind of trailer or accessory are you using that you need the extension?
      view full answer...
    • Will an Aftermarket Hitch Get in the Way of My Hands Free Tailgate Sensor on 2025 Toyota Rav4?
      Hello Hal, Congrats on the new ride! What is your favorite new feature? With any aftermarket hitch there is the possibility that the hands free tailgate sensor will be covered. So if you install B&W Trailer Hitch Receiver - Custom Fit - Class III - 2" # BW47BR on your 2025 Toyota RAV4 it is possible to lose full capabilities of your hands free tailgate, in our experience you can usually maneuver your foot to the right or the left of the receiver to have the sensor work. It would be nice...
      view full answer...
    • Recommended Hitch for a 2024 Hyundai Santa Cruz
      Yes, we do. To add a hitch to your 2024 Hyundai Santa Cruz, I recommend the Curt Trailer Hitch item # C23WR. This is a class III hitch with a 2" receiver. It has a 5,000 lbs towing capacity and a 750 lbs maximum tongue weight. I really like this hitch because the crosstube mounts completely behind the rear bumper leaving only the 2" receiver exposed. This not only looks better but it helps with ground clearance. Since you are planning on towing you will also need a wiring harness item...
      view full answer...
    • Recommended Hitch and Wiring Harness for a 2025 Mazda CX-90
      Hey Hunter congrats on the new vehicle! To tow a small trailer with your 2025 Mazda CX-90 you're going to need a hitch, a wiring harness, a couple of mounting brackets, and a ball mount kit. The best hitch for your CX-90 is going to be the Curt item # C25FV. This hitch is custom fit and bolts to your Mazda with included hardware. It is a class III hitch with a 2" receiver that has a 5,000 lbs towing capacity and a 500 lbs maximum tongue weight. I really like this hitch because the entire...
      view full answer...
    • Recommended Hitch, Wiring Harness, and Mounting Brackets for a 2017 Toyota RAV4 Hybrid
      Hey Shannon! I'll start by confirming that the EcoHitch Hidden Trailer Hitch item # 306-X7219 will fit the 2017 Toyota Rav4 Hybrid. Out of those two wiring harnesses, I recommend going with the Curt item # C56350 over the Tekonsha item # 118578 because of reliability. This custom-fit T-connector plugs into your Toyota's wiring harness, which is located in your rear cargo area. It will provide you with a 4-way connector. The Curt item # C42CR and item # C57202 are not going to be the...
      view full answer...
    • Does the Curt Hitch 13493 Fit a 2024 Ford Bronco?
      Yes, it does. The Curt Hitch 13493 or our part number item # C76WR is confirmed to fit the 2024 Ford Bronco. This hitch is custom fit and bolts to your Bronco with included hardware. This is a class III hitch with a 2" receiver. It has a 3,500 lbs towing capacity and 350 lbs maximum tongue weight. I really like this hitch because of how easy it is to install it. You only have to install four bolts to your rear bumper to get this hitch set up. I have linked an installation video below along...
      view full answer...
    • Recommended Wiring Harness for a 2025 Kia K5
      Hey Vincent. As of 5/8/2025 there are no plug in wiring harnesses for a 2025 Kia K5. The only option I have today is the ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector and Installation Kit item # 119250KIT. This kit uses sensors that clamp onto your K5's taillights without splicing into them. The sensors detect the current and activate your trailer's lights through the 4-way connector. Here are some other parts you'll need to tow a trailer with your 2025...
      view full answer...
    • On Your etrailer Hitch for My 2025 Subaru Outback Why do I Need the Carriage Bolt Through the Frame?
      Hello Stanley, Congrats on the new 2025 Subaru Outback! What is your favorite new feature? I watched the video and see the bolts you are referring to. I get what you are saying, seems a little excessive to have the bolts thru the bumper, and underneath as well. That carriage bolt you saw in the video helps anchor the side arm of the hitch to the frame for extra stability. While most of the hitch is secured to the bumper beam, this bolt keeps things from flexing or shifting side-to-side,...
      view full answer...
    • Is there a Mounting Bracket that Will Attach a Wiring Harness to a Hitch w/out Drilling?
      Yes, we do! The best one is going to be the No-Drill Mount for Electrical Mounting Bracket item # 18140. This bracket will wrap around any hitch, square, round, OEM, or aftermarket and provide you with a mounting point that does not require drilling. You can use the Mighty Cord Universal 7-Way Mounting Bracket item # A10-9394VP for a 7-way connector or item # C42CR for a 4-way if your connector needs an additional bracket.
      view full answer...


    < Previous
    123. . .11



    Do you have a question about this Accessories and Part?


    Info for this part was:

    Employee Andrew K
    Installed by:
    Andrew K
    Employee Michael B
    Installed by:
    Michael B
    Employee Lindsey S
    Edited by:
    Lindsey S
    Employee Jameson C
    Expert Research:
    Jameson C
    Employee Joshua S
    Video Edited:
    Joshua S
    Employee Dustin K
    Video Edited:
    Dustin K
    Employee Wilson B
    Updated by:
    Wilson B
    Employee Carrie F
    Updated by:
    Carrie F
    Employee Kristina F
    Written by:
    Kristina F
    Employee Rick G
    Video by:
    Rick G

    At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.


    Product Experts Available Now!
    Call 1-800-940-8924