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Complete CURT Class 3 2" trailer hitch and 5-flat wiring kit (with 4-way to 5-way adapter for surge brakes) engineered for the 2013 - 2015 Lexus RX350 Excluding F Sport. 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!
Whatever your task at hand -- whether it's launching that boat before daybreak, setting up your camper before the rush or getting a final load to the dump before close -- CURT class 3 trailer hitches offer the strength needed for serious towing. They make it easy to hitch up and Bring It, offering a vehicle-specific fit and the weight capacity to handle a variety of trailers. Custom class 3 hitches are the most common type of receiver hitch for pickup trucks and SUVs. Because of their weight range, they are also found on full-size cars, crossovers and minivans. Each custom-fit class 3 hitch package is made for vehicle-specific mounting. This particular kit fits certain years of the Lexus RX350 and RX450h (see application info to verify vehicle compatibility). It provides a weight carrying capacity of 4,000 lbs. GTW and 600 lbs. TW. It is also compatible with a weight distribution hitch for level towing and a rating of 5,000 lbs. WD and 600 lbs. WDTW. CURT class 3 trailer hitches are typically used to attach and haul utility trailers, boat trailers, campers, snowmobile or ATV haulers and more (NOTE: Never exceed the lowest-rated towing component). Each class 3 hitch has a 2" receiver tube and is tested in accordance with SAE J684 for safety. To ensure that CURT class 3 receiver hitches have what it takes for serious trailering, they are designed using a hands-on approach and are constructed with rugged, high-strength steel and precise welding. We also protect our class 3 hitches in a co-cured finish of liquid A-coat and black powder coat for superior resistance to rust, chipping and UV damage.
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 Lexus RX Series (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 888-634-9494One-year limited
1 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2013 - 2015 | Lexus RX350 | Excluding F Sport |
The part number is 13143. This hitch is designed for Lexus RX 350 (including F Sport) and RX 450H models from 2010–2015.
Yes, part number 13143 fits Lexus RX 350 F Sport models from 2010–2015. F Sport models require additional installation steps including placement of a support plate under the passenger side plate and relocation of the support bar, which will be rotated upside down from its original position.
Yes, part number 13143 is designed for Lexus RX 450H models from 2010–2015.
When used as a weight-carrying hitch, the gross load capacity is 4,000 lbs. trailer weight and 600 lbs. tongue weight. When used as a weight-distribution hitch, the gross load capacity is 5,000 lbs. trailer weight and 600 lbs. tongue weight. Do not exceed your vehicle manufacturer's recommended towing capacity.
The hitch weight is 35 lbs.
The hitch includes 6 M12 – 1.25 x 40 hex bolts and 6 conical toothed washers (1/2"). The hitch uses existing weldnuts in the frame rails (3 each side) and existing hole plugs. For F Sport models, the support bar is reattached using existing nuts removed from the tow loops.
Required tools are: ratchet, torque wrench, 9-inch socket extension, 10mm socket, 17mm socket, 19mm socket, screwdriver (flat head), and aviation shears. A rotary tool may be used as an alternative to aviation shears for trimming the fascia. Safety glasses must be worn at all times during installation.
No, drilling is not required. The hitch uses existing weldnuts in the frame rails and existing hole plugs.
Yes, trimming is required. The underbody panel and lower fascia must be trimmed to accommodate the hitch and support bar (on F Sport models). Use masking tape to layout the trim area, then use a rotary tool or aviation shears to trim. The fascia trim area is 4.50 inches wide by 6.00 inches tall. Consult the vehicle owner prior to trimming.
Two people may be required to ease installation. The manual recommends reading all instructions thoroughly before beginning and notes that using proper tools will greatly improve the quality of the install and reduce the time required.
Professional installation time is approximately 70 minutes. Novice (DIY) installation time is approximately 38 minutes. Actual time may vary depending on experience and familiarity with the vehicle.
All 12mm fasteners must be torqued to 86 ft-lbs. This applies to the M12 – 1.25 x 40 hex bolts that secure the hitch to the frame rail weldnuts.
Tow loop reattachment is optional on non-F Sport models. However, tow loops cannot be reattached on F Sport models. The existing tow loop fasteners are removed during installation and should be returned to the vehicle owner.
On F Sport models, the support plate is placed under the passenger side plate. The hitch is clamped between the frame and the support plate. The support bar is then attached to the hitch and support plate using existing nuts removed from the tow loops.
The support bar is rotated upside down (180 degrees) from how it was originally attached to the tow loops. It is then attached to the hitch and support plate using the existing nuts that were removed from the tow loops.
The exhaust may need to be temporarily lowered to ease installation. If lowered, the exhaust must be supported as needed to prevent damage. The exhaust should be reinstalled after the hitch is secured in position.
The installation sequence is: (1) remove lower fascia by removing 13 fasteners; (2) temporarily lower exhaust if needed; (3) remove existing hole plugs from frame rails; (4) on F Sport models, remove support bar by removing four nuts; (5) remove existing tow loop fasteners and tow loops; (6) raise hitch into position, aligning with existing weldnuts; (7) secure hitch with 12mm bolts and 1/2" conical toothed washers; (8) on F Sport models, attach support bar using existing nuts; (9) torque all 12mm fasteners to 86 ft-lbs; (10) reinstall exhaust if lowered; (11) trim fascia as needed and reattach.
After installation, verify that the fascia fits properly and has adequate clearance. Periodically check that all fasteners are tight and that all structural components are sound. Do not exceed your vehicle manufacturer's recommended towing capacity.
Periodically check the receiver hitch to ensure that all fasteners are tight and that all structural components are sound. The manual does not specify an exact inspection interval, but regular checks are recommended to maintain safe operation.
Never exceed your vehicle manufacturer's recommended towing capacity. The hitch itself supports up to 4,000 lbs. trailer weight and 600 lbs. tongue weight as a weight-carrying hitch, or 5,000 lbs. trailer weight and 600 lbs. tongue weight as a weight-distribution hitch, but your vehicle's manufacturer specifications take precedence.
Safety glasses must be worn at all times while installing this product. If you are hesitant to undertake this task on your own, contact an authorized Curt installer for additional assistance. Read all instructions thoroughly before beginning installation.
Yes, part number 13143 is designed for Lexus RX 350 (including F Sport) and RX 450H models from 2010–2015.
No, drilling is not required. The hitch uses existing weldnuts in the frame rails.
Professional installation takes approximately 70 minutes. Novice DIY installation takes approximately 38 minutes.
Safety glasses must be worn at all times during installation. If hesitant, contact an authorized Curt installer. Read all instructions thoroughly before beginning.
If the fascia does not fit properly after trimming, trim further as needed and try again. The fascia trim area should be approximately 4.50 inches wide by 6.00 inches tall. Check for proper fit and clearance before reattaching the fascia using the existing hardware.
Ensure the hitch plates are properly aligned with the existing weldnuts in the frame rails. Start with the passenger side plate and pull down on the exhaust to create clearance. If weldnuts require cleaning, use a rotary tool to clean them. Verify that the holes in the frame rails align with the holes in the hitch before inserting the bolts.
CURT 56564 is designed for SUVs and Vans with factory trailer towing harness connectors and 12-volt negative ground electrical systems. Your vehicle must have an existing factory trailer towing harness connector underneath the vehicle on the driver's side. If your vehicle does not have this connector, this product will not function. Contact CURT Product Support at 877-287-8634 to confirm compatibility with your specific make, model and year.
CURT 56564 is a powered converter lead and T-connector harness system that integrates a vehicle's factory trailer towing harness with a lighting module. It allows you to connect a trailer with functioning lights to your SUV or van. The system includes a white 10-pin towing connector, a 4-way flat connector for the trailer, a lighting module, a powered converter with battery connection, and mounting hardware.
You will need: a trim panel tool, wire cutters, a test light, and a multimeter. These tools are required to remove trim panels safely, cut and route wires, and verify proper electrical function after installation.
Yes. You must disconnect the negative battery cable from the driver's side of the engine compartment before beginning installation. Ensure the negative battery cable is isolated to protect it from creating an electrical system ground. Reconnect the negative battery terminal only after all other installation steps are complete (Step 8).
Read all instructions thoroughly before beginning. Proper tools will improve installation quality and reduce time required. All steps must be followed to ensure the product functions properly. The installation is rated as Difficult, so ensure you have adequate time, proper tools, and understanding of the procedure before starting.
Mount the lighting module on a flat, clean surface either behind the threshold or in the lower passenger's side trim panel area. Use the provided double-sided tape or zip ties to secure it in an out-of-the-way location where it will not interfere with vehicle operation or occupants.
Insert the lighting module's white 10-pin towing connector into the vehicle's mating harness (located behind the passenger-side trim panel after removing the side panel mounting pins). This connector links the module to the factory trailer towing system.
The factory trailer towing harness connector is located underneath the vehicle on the driver's side. It has a protective plug that must be carefully removed before inserting the trailer tow harness. Take care not to damage the connector mounting tabs when removing the protective plug.
Place the protective connector cap in the glove box or console for storage. Do not discard it. You may need it in the future if the connector is disconnected.
Route the 4-way flat connector along the rear bumper fascia and over to the center of the vehicle. Secure the 4-way connector into a bracket (not included with the product). Secure any loose wires with the provided cable ties to prevent movement and damage.
Drilling may be required only if you need to ground the white ground wire from the powered converter to the vehicle body. A 3/32" hole may be drilled if an existing mounting point is not available. Before drilling, check for miscellaneous items that may be behind or under any surface to avoid personal injury or property damage.
The battery connection must be fuse-protected with a 10-amp maximum fuse. Exceeding this rating can cause loss of warranty, overheating and potential fire. Install the fuse after all other installation steps are complete.
Signal circuits are rated at 3.0 amps per side. Tail and running circuits are rated at 6.0 amps total. Do not exceed the product rating or the tow vehicle lamp load rating, whichever is lower.
Use 12 GA (gauge) wire or larger for the power connection from the converter to the vehicle battery. Route this wire to the vehicle battery location, taking care to avoid pinch points and hot or rotating components.
The powered converter uses the following wire colors: Green for right turn signal, Red for brake, Yellow for left turn signal, and Brown for taillight. If using the converter as a powered module for a two-wire system, the red brake wire must be grounded.
Route the 12 GA black power wire to the positive (+) battery terminal using a ring terminal. The negative battery cable must be disconnected before wiring the power wire. Use the ring terminal for the battery connection and secure it with the screw provided. Install the fuse holder with a 10-amp maximum fuse after all other steps are complete.
Attach the ring terminal of the white ground wire to the vehicle body using the screw provided. If an existing mounting point is not available, drill a 3/32" hole. Before drilling, check for miscellaneous items behind or under the surface to avoid injury or damage.
When passing the power wire through sheet metal, use an existing grommet, add a new grommet, or use silicone to protect the power wire from sharp edges. This prevents damage to the wire insulation and potential electrical hazards.
The provided 4-way dust cover helps prevent corrosion of the 4-way flat connector. Install it after reconnecting the negative battery terminal to protect the connector from moisture and environmental damage.
CURT 56564 is designed for use only on 12-volt negative ground electrical systems. Your vehicle must have a negative ground system for this product to function correctly.
Do not lay tools across the positive battery terminal (typically noted with red covers or a red '+' symbol), as this can cause a ground short leading to sparks and/or electrical shocks. Disconnect the negative battery cable before wiring the power wire. Ensure the negative battery cable is isolated to protect it from creating an electrical system ground, as grounding it to a metal item could damage the vehicle's electrical system.
After installation, verify that the harness is functioning by using a test light, 4-way tester, multimeter, or by attaching the 4-way flat connector to any trailer with functioning lights. This confirms that all electrical connections are correct and the system is ready for use.
Periodic inspection of all wires and connections should be performed to ensure there is no visible damage or loose connections. Regular maintenance helps prevent electrical failures and ensures safe trailer operation.
CURT 56564 fits SUVs and vans with factory trailer towing harness connectors and 12-volt negative ground systems. Your vehicle must have an existing factory trailer towing harness connector. Contact CURT at 877-287-8634 to confirm compatibility with your specific vehicle.
Yes, disconnect the negative battery cable before starting installation. Reconnect it only after all other steps are complete.
Drilling may be required only to ground the white ground wire to the vehicle body if an existing mounting point is not available. A 3/32" hole is drilled if necessary.
Use 12 GA (gauge) wire or larger for the power connection from the converter to the vehicle battery.
CURT 56564 is designed for 12-volt negative ground electrical systems only.
Ensure you have located the correct mating harness connector behind the passenger-side trim panel. The connector should be a white 10-pin type. If the connector does not fit, do not force it, as this can damage the connector tabs. Verify that the vehicle has a factory trailer towing system and that you are using the correct product for your vehicle. Contact CURT Product Support at 877-287-8634 for assistance.
Verify that the harness is functioning by using a test light, 4-way tester, multimeter, or by attaching the 4-way flat connector to a trailer with functioning lights. If the test light does not illuminate, check that: (1) the negative battery cable is properly reconnected, (2) the white 10-pin connector is fully seated in the vehicle's mating harness, (3) the factory trailer towing harness connector is properly inserted, (4) the 10-amp fuse is installed and not blown, and (5) all wire connections are secure. If the problem persists, contact CURT Product Support at 877-287-8634.
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