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Complete CURT Class 1 1-1/4" trailer hitch and 4-flat custom wiring kit engineered for the 2018 - 2019 Hyundai Sonata Excluding Hybrid. Vehicle-specific fit, plug-and-play installation, all hardware and instructions included.
This custom kit fits the following vehicles:
All Hardware and Installation Instructions Included!
However you define adventure -- whether it's climbing onto the back of a mountain bike, hunting from the top of a tree stand or camping with the family a long way from nowhere -- CURT class 1 hitches provide a light-duty towing receiver to help you Bring It. Each is made to fit a specific vehicle, providing easier installation, a better fit and optimal towing capacity. Custom class 1 trailer hitches are available for a variety of smaller vehicle types, including the compact car, crossover, minivan and small SUV. This particular class 1 hitch is designed to be a custom hitch for certain years of the Hyundai Sonata and Kia Optima (to verify vehicle compatibility, see the CURT application guide at curtmfg.com). Tested in accordance with SAE J684, it offers a weight carrying capacity of 2,000 lbs. GTW and 200 lbs. TW. It is equipped with 1-1/4" receiver tube opening to accept a ball mount shank or other hitch mount. This class 1 hitch also comes with all necessary mounting hardware. With its lightweight design and smaller receiver tube size, a class 1 hitch is especially useful for adding cargo space with a hitch-mounted bike rack or cargo carrier. They can also typically be used to tow small trailers such as a utility trailer, kayak trailer or teardrop camper (never exceed the lowest weight capacity of any towing component; i.e. the vehicle, hitch, trailer, etc). Though CURT class 1 trailer hitches are only intended for light-duty towing, we apply the same principles of quality as we do to the rest of our rear mount hitches. Each class 1 hitch is made with hands-on engineering, high-strength steel and precise welding. We use a co-cured finish of liquid A-coat, inside and out, and durable black powder coat to provide a lasting defense against rust, chips and UV rays.
If your vehicle is not equipped with wiring for towing a trailer, CURT custom wiring is the ideal solution. A custom wiring harness -- also called a T-connector -- is a simple, plug-and-play electrical device that plugs into your automotive electric system and provides a standard, universal trailer wiring connection. This is done using two or more vehicle-specific, OEM-compatible connectors to plug into the taillight assembly, eliminating the need for cutting, splicing and soldering during installation. Custom wiring harnesses are made vehicle-specific, and while they are not available for all vehicles, they do offer one of the fastest, easiest and most secure ways to wire a vehicle for towing. This particular plug-in harness provides a 4-way flat connector socket and is designed to be a custom wiring harness to fit certain years of the Hyundai Sonata (to verify your vehicle compatibility, see application info). It comes with all necessary wiring components to establish a reliable trailer wiring connection, as well as a dust cover to keep the connector clean when not in use. You have a picture in mind of your next destination -- maybe it's the boat landing at your favorite fishing spot, maybe it's a campsite that overlooks one of nature's masterpieces, or maybe it's the next big jobsite. However, turning that picture into a reality takes more than just daydreaming. It takes a solid connection and the right amount of power. CURT custom wiring is made with some of the most sophisticated technology in the industry and is designed to install with ease, giving you a long-lasting electrical connection for your towing hitch setup.
CURT offers a variety of high-quality trailer hitches and accessories for select vehicle models. Find the perfect fit for your towing needs at TowUniverse.
CURT, a Lippert brand, offers a complete line of towing products and is the leading manufacturer of custom-fit trailer hitches. We offer the broadest selection of custom-fit hitches, and each one is designed, welded, and coated in Wisconsin.
CURT is also a leader in flat towing products, as well as 5th wheel, gooseneck, and weight distribution hitches, ball mounts, electrical components, cargo solutions, and other towing accessories.
For everything from passenger cars and vans to full-size pickups and SUVs, CURT is 'The First Name in Towing Products®.'
Experts available to answer your questions
Call 888-634-94941 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2018 - 2019 | Hyundai Sonata | Excluding Hybrid |
Yes, the CURT 11402 is designed for 2016-present Kia Optima sedans. The hitch is a weight-carrying receiver hitch with a maximum trailer weight capacity of 2,000 lbs and tongue weight capacity of 200 lbs. Always verify your vehicle's manufacturer-recommended towing capacity before towing.
Yes, the CURT 11402 is designed for 2015-present Hyundai Sonata sedans, including Blue Drive models. The hitch is a weight-carrying receiver hitch with a maximum trailer weight capacity of 2,000 lbs and tongue weight capacity of 200 lbs. Always verify your vehicle's manufacturer-recommended towing capacity before towing.
The CURT 11402 has a maximum trailer weight capacity of 2,000 lbs and a tongue weight capacity of 200 lbs when used as a weight-carrying hitch. However, you must never exceed your vehicle manufacturer's recommended towing capacity, which may be lower than these ratings.
You will need: a ratchet, 10 mm socket, 3/4 inch socket, torque wrench, pry bar, safety glasses, spray lubricant, and a die grinder. The die grinder is needed to enlarge the forward-most hole on both frame rails to allow 1/2" bolts and spacers to pass through.
The kit includes: 4 bolts (1/2-13 UNC, 1-1/4", grade 8, yellow zinc, part 10-10278); 4 square hole spacers (0.250 x 1.00 x 3.00", part CM-SP6); 4 serrated flange nuts (1/2-13 UNC, grade 8, yellow zinc, part 20-00062); and 2 pieces of 1/2" x 30" fishwire (part 1_2 x 30 FISHWIRE).
Yes. You must remove the rubber exhaust hangers and temporarily lower the exhaust to access the frame rails. Be sure to support the exhaust to prevent damage. After installation is complete, you will raise the exhaust back into position.
Yes. You must temporarily remove the heat shield(s) by removing fasteners with a 10 mm socket. After the hitch is installed and torqued, you will reinstall the heat shield(s), leaving the rear-most fastener off. You may have to slot the front hole in the heat shield to accommodate the hitch.
If your vehicle has a plastic underbody panel, you must temporarily remove it by removing plastic fasteners and fasteners with a 10 mm socket. After installation, you will trim the panel (see trim diagram for approximate dimensions) and reinstall it.
No new holes need to be drilled. However, you must enlarge the forward-most hole on both frame rails to allow 1/2" bolts and spacers to pass through. This enlargement is done using a die grinder. The rear holes are already present and will be used as-is.
Fishwire is a technique to route hardware through tight spaces. For this hitch: thread the 1/2" bolts and spacers through the enlarged forward hole and out through the rear holes on each side. Then reverse the bolts and spacers back into the enlarged holes. This allows you to position the hardware before raising the hitch into place. The manual references fishwire technique diagrams for visual guidance.
All 1/2" hardware (bolts and flange nuts) must be torqued to 110 ft-lbs. Use a torque wrench to ensure proper tightness. This torque should be applied after the hitch is raised into position and attached to the frame.
Two people may be required to ease installation. While one person may be able to complete the installation, having a second person can help, particularly when raising the hitch into position.
The CURT 11402 is rated as an EASY installation. However, it requires specific tools (including a die grinder for hole enlargement), removal of multiple vehicle components (exhaust, heat shield, underbody panel), and the fishwire technique for hardware routing. If you are hesitant to undertake this task, CURT recommends contacting an authorized CURT installer for assistance.
Safety glasses must be worn at all times while installing this product. When lowering the exhaust, be sure to support it to prevent damage. When raising the hitch into position, be careful not to push hardware into the frame. Read all instructions thoroughly before beginning installation.
All non-trailer loads (wheel-less loads) applied to this hitch must be supported by CURT 18050 stabilizing straps. Failure to properly support non-trailer loads will void the product warranty. CURT recommends the use of 18050 stabilizing straps for all non-trailer loads.
After installation, verify that all 1/2" hardware has been torqued to 110 ft-lbs. Ensure the heat shield(s) are reinstalled with the rear-most fastener left off. Confirm the exhaust is raised back into position. If an underbody panel was present, verify it has been trimmed and reinstalled. Periodically check that all fasteners remain tight and all structural components are sound.
You should periodically check the receiver hitch to ensure all fasteners are tight and all structural components are sound. The manual does not specify an exact interval, but regular inspection before towing is recommended.
The CURT 11402 is designed for use with ballmount 45521. Euro mount options are available: part 45571 (1-7/8" ball) and part 45572 (2" ball).
Yes, the CURT 11402 fits 2016-present Kia Optima sedans and 2015-present Hyundai Sonata sedans (including Blue Drive). Maximum towing capacity is 2,000 lbs trailer weight and 200 lbs tongue weight, but never exceed your vehicle manufacturer's recommended towing capacity.
No new holes are drilled, but you must enlarge the forward-most hole on both frame rails using a die grinder to allow 1/2" bolts and spacers to pass through.
Yes, you must temporarily remove rubber exhaust hangers and lower the exhaust (supporting it to prevent damage), and temporarily remove the heat shield(s). Both are reinstalled after the hitch is torqued.
All 1/2" bolts and flange nuts must be torqued to 110 ft-lbs using a torque wrench.
Never exceed your vehicle manufacturer's recommended towing capacity. All non-trailer loads must be supported by CURT 18050 stabilizing straps. Wear safety glasses during installation.
Yes, Curt part 56390 is designed for Hyundai Sonata and Hyundai Sonata Hybrid passenger cars. The harness is installed inside the trunk behind the taillight housings on both driver and passenger sides. Confirm your vehicle is a passenger car model before purchasing.
The harness is rated for Signal Circuits at 3.0 amps per side and Tail/Running Circuits at 6.0 amps total. Do not exceed these ratings or your tow vehicle's lamp load rating, whichever is lower. Exceeding the rating can cause loss of warranty, overheating, and potential fire.
You will need a panel trim removal tool, cutting tool, wire stripper, and wire crimper. A drill may be required if you need to create a 3/32" pilot hole for the ground screw (if a suitable existing screw is not available on the vehicle frame).
Drilling may be required. The installation calls for a ground wire to be secured to the vehicle frame using a ring terminal and provided screw. If a suitable existing screw with nut is not available near the taillight connector, you must drill a 3/32" pilot hole. Before drilling, check for hidden items behind or under any surface to avoid damage and personal injury.
The taillight wiring harness connectors are located behind the interior side felt liner on both the driver and passenger sides of the trunk. Pull back the felt liner after removing its fasteners to access the connectors. The connectors will be similar in appearance to those on the custom wiring harness.
Separate the vehicle's taillight housing connectors by carefully pulling them apart, taking care not to damage the locking tabs. Insert the custom wiring harness end with the yellow wire between the separated connectors. Push the connectors fully together until the locking tabs are in place. Repeat this process on the passenger side using the harness end with the green wire.
Locate a flat spot inside the vehicle near the taillight and adhere the black converter box using the provided double-sided tape. The exact location should be chosen to keep the box secure and out of the way.
The battery connection must be fuse-protected with a maximum 10-amp fuse. Exceeding this fuse rating can cause loss of warranty, overheating, and potential fire. Do not exceed the product rating or your tow vehicle's lamp load rating, whichever is lower.
Route the black power wire from the vehicle battery as shown on the included CME-PCL-INS sheet. This separate instruction sheet provides the specific routing path for your vehicle. Refer to that document for detailed battery connection instructions.
Locate a suitable grounding point near the taillight connector, such as an existing screw with nut in the vehicle frame. If no suitable existing screw is available, drill a 3/32" pilot hole. The area must be free of rust, dirt, and paint. Secure the white ground wire using the ring terminal and provided screw.
When not in use, roll up the 4-flat connector and store it in a convenient, out-of-the-way location inside the trunk. When in use, route the 4-flat to the center of the vehicle and out of the trunk. Secure any loose wires with the provided cable ties.
Once installed, test for proper function by using a test light or connecting a properly wired trailer. All installation steps must be followed to ensure the wiring harness functions properly.
Remove the scuff panel by pulling out on the two clips securing it in place and then pulling straight up on the panel. Take care not to damage the alignment tabs on the back. The scuff panel must be removed to access the wiring routing path and should be reinstalled at the end of the installation.
Open the vehicle trunk and remove all trunk floor coverings and storage trays. Additionally, remove the scuff panel and the fasteners from the interior side felt liner on both the driver and passenger sides to access the taillight connectors.
The manual does not specify whether factory fasteners should be reused. The installation uses a provided screw and ring terminal for the ground wire connection. Reinstall all items removed during installation, including the scuff panel and felt liner fasteners, at the end of the process.
The harness includes a custom wiring harness with yellow and green wire ends, a white ground wire with ring terminal, a black converter box, a provided screw for grounding, double-sided tape for mounting the converter box, a 4-flat dust cover, and cable ties for securing loose wires.
Yes, the Curt 56390 is designed for Hyundai Sonata and Sonata Hybrid passenger cars. Installation is inside the trunk behind both taillight housings.
You need a panel trim removal tool, cutting tool, wire stripper, wire crimper, and possibly a drill for a 3/32" pilot hole if no existing ground screw is available.
Drilling may be required. If a suitable existing screw with nut is not available on the vehicle frame near the taillight connector, you must drill a 3/32" pilot hole for the provided ground screw.
The battery connection must be fuse-protected with a maximum 10-amp fuse. Exceeding this rating can cause overheating and fire.
Signal Circuits: 3.0 amps per side. Tail/Running Circuits: 6.0 amps total. Do not exceed these ratings or your vehicle's lamp load rating, whichever is lower.
Test for proper function using a test light or by connecting a properly wired trailer. All installation steps must be followed for proper operation.
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