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Complete CURT Class 3 2" trailer hitch and 4-flat custom wiring kit engineered for the 2016 - 2019 Lexus RX450h 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 (excludes F Sport; see application info to verify vehicle compatibility). It provides a weight carrying capacity of 3,500 lbs. GTW and 525 lbs. TW. It is also compatible with a weight distribution hitch for level towing and a rating of 4,000 lbs. WD and 525 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.
CURT custom wiring connectors are the easiest way to outfit your vehicle with a CURT trailer wiring connection. They are built with some of the most advanced technology in the industry, and each one is custom-fitted to work with a specific make and model. Some automotive manufacturers install a special socket on the vehicle to be used for vehicle-to-trailer wiring. Although this special socket is not equipped on every vehicle, a CURT custom wiring connector -- also called a T-connector -- utilizes the socket for simple, stress-free installation. Rather than requiring you to cut, splice and solder into your vehicle's wiring system, the custom wiring connector uses a single OEM-compatible plug and instantly provides a standard, universal vehicle-to-trailer wiring connection, typically in the form a 4-way flat. All CURT custom wiring connectors are made vehicle-specific for the easiest possible installation and the best fit. This particular plug-in connector provides a 4-way flat socket and is designed to be a custom wiring option for certain years of the Lexus RX350 and RX450h (factory tow package required; to verify your vehicle compatibility, see application info). It comes with all necessary hardware to establish a solid connection. It also comes with a dust cover to keep the connector socket clean when not in use. To ensure long-lasting reliability, all CURT custom wiring connectors are thoroughly tested for optimal functionality. Stress is the last thing you should feel when towing a trailer -- whether you're hauling your RV to that favorite camping destination, your ATVs up to the hunting grounds or your fishing boat to the new hidden hotspot. At CURT, we think your towing equipment should add to the enjoyment of your experience, not detract from it.
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 |
|---|---|---|
| 2016 - 2019 | Lexus RX450h | Excluding F Sport |
Yes, the 16 - 22 Lexus RX450h Excluding F Sport Curt 2", Class 3 Trailer Tow Hitch + 4-flat Wiring Kit 13515 (Part #CHW-2167) is designed to fit the 2016-2022 Lexus RX450h.
The 16 - 22 Lexus RX450h Excluding F Sport Curt 2", Class 3 Trailer Tow Hitch + 4-flat Wiring Kit 13515 (Part #CHW-2167) fits 2016-2022 Lexus RX450h models. The 2022 model year is the last year covered by this part number. For newer models, check for an updated version.
The 16 - 22 Lexus RX450h Excluding F Sport Curt 2", Class 3 Trailer Tow Hitch + 4-flat Wiring Kit 13515 (Part #CHW-2167) fits the following vehicles: 2016-2022 Lexus RX450h. Always verify your specific year, make, and model before ordering.
The 16 - 22 Lexus RX450h Excluding F Sport Curt 2", Class 3 Trailer Tow Hitch + 4-flat Wiring Kit 13515 (Part #CHW-2167) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
The Curt 56083 custom wiring connector is designed for Lexus RX 350 models equipped with a tow package. If your RX 350 has the tow package, the connector will fit. If you are unsure whether your vehicle has the tow package, check your vehicle owner's manual or contact the vehicle manufacturer.
Yes, the Curt 56083 custom wiring connector is compatible with the Lexus RX 450h.
Some RX 350 models may need to be programmed to accept the custom wiring connector. This programming must be done by a Lexus dealer. Check with your dealer to determine whether your specific vehicle requires programming.
The Curt 56083 includes the custom wiring connector, a protective cap for the vehicle plug, cable ties for securing loose wires, and a 4-flat dust cover to help prevent corrosion.
1. Locate the vehicle taillight wiring connector and remove the protective cap. 2. Insert the custom wiring connector end into the vehicle connector, ensuring the connectors are fully inserted with locking tabs in place. 3. Route the 4-flat connector to the center of the vehicle and out of the trunk when in use; roll up and store inside the trunk when not in use. Secure loose wires with the provided cable ties. 4. Some models may require dealer programming. 5. Reinstall all removed items and install the provided 4-flat dust cover.
The vehicle taillight wiring connector is located behind the driver side rear bumper. The manual refers to this location as 'S5' and shows a representative vehicle diagram, but for specific location details on your model, check your vehicle owner's manual or contact the vehicle manufacturer.
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.
Do not exceed the product rating or the tow vehicle lamp load rating, whichever is lower. Exceeding the product rating can cause loss of warranty, overheating and potential fire. For the specific product rating, refer to the product documentation or contact Curt Manufacturing.
Test for proper function by using a test light or connecting a properly wired trailer. All steps must be followed to ensure the wiring connector will function properly.
The provided 4-flat dust cover helps prevent corrosion of the connector. Install it after completing the wiring connector installation.
Yes, the Curt 56083 is designed for Lexus RX 350 with tow package and RX 450h. Some models may require dealer programming.
The manual lists no tools as needed for installation. The connector plugs directly into the vehicle taillight wiring connector.
The manual does not specify whether bumper removal is required. The connector is located behind the driver side rear bumper. Check your vehicle owner's manual or contact the vehicle manufacturer for access instructions.
Do not exceed the product rating or tow vehicle lamp load rating, whichever is lower. Exceeding the rating can cause loss of warranty, overheating and potential fire. Refer to product documentation for the specific rating.
Test for proper function using a test light or by connecting a properly wired trailer.
The CURT 13515 has a gross trailer weight (GTW) capacity of 3,500 lbs and a tongue weight (TW) capacity of 525 lbs. For weight distribution towing, the capacity is 4,000 lbs GTW with 525 lbs tongue weight. Never exceed your vehicle manufacturer's recommended towing capacity.
The CURT 13515 is designed for both hybrid and non-hybrid models, but the installation procedure differs between them. Hybrid models require removal of the underbody panel and lowering of the exhaust; non-hybrid models skip these steps. Refer to the installation steps for your specific model type.
Required tools: ratchet, reciprocating saw or hacksaw, sockets (10mm, 12mm, 17mm, 19mm), socket extension, flathead screwdriver, torque wrench, tape, and marker. Safety glasses must be worn at all times during installation. A tools reference guide is available at curtmfg.com/trailer-hitch-installation.
No drilling is required. The CURT 13515 uses existing vehicle frame weldnuts for mounting. However, trimming of the underbody panel and fascia is required using a reciprocating saw or hacksaw.
For non-hybrid models, a 3" × 3" area of the lower fascia must be trimmed at the center line of the bottom edge using a reciprocating saw or hacksaw. For hybrid models, the underbody panel must be removed and both underbody panels trimmed according to the trim diagram (7-1/2" × 8" and 4" areas). Do not cut on the sensor bracket.
All M12 bolts must be torqued to 79 ft-lbs.
All M8 bolts on hybrid models (used to secure the exhaust bracket) must be torqued to 16 ft-lbs.
Safety glasses must be worn at all times during installation. Use caution when trimming lower fascia and underbody panels. Do not cut on the sensor bracket. After installation, perform periodic inspection to ensure all mounting hardware remains tight and structural components are secure.
The CURT 13515 package includes: 1 trailer hitch, 4 hex bolts (M12 × 1.25"), 2 hex nuts (M8 × 1.25"), 2 conical-toothed washers (3/8"), and 4 conical-toothed washers (1/2").
The manual notes that model year 2021 and later vehicles may have sensor bracket tabs that must be removed before installation. For model year 2021 and earlier, this step is not required. Consult the manual or contact CURT product support at 877-287-8634 to confirm compatibility with your specific vehicle.
No. Underbody panel removal is required only for hybrid models. Non-hybrid models skip this step and proceed directly to removing the tie-down bracket. For hybrid models, the underbody panel is secured by 14 fasteners (10mm socket) and one push fastener in the wheel well trim.
The tie-down bracket is located on the passenger side and is secured by two bolts (17mm socket). It must be removed during installation and returned to the vehicle owner. The hitch does not use this bracket.
The vehicle weldnuts are located behind plastic caps on the driver-side frame rail. Remove the two rear-most plastic caps using a flathead screwdriver to gain access to the existing vehicle weldnuts. Clean any debris from the weldnuts using lubricant, compressed air, or a wire brush, taking care not to damage the threads.
Spray lubricant or compressed air into the weldnut hole to remove debris. For heavy debris, use a wire brush. Take care not to damage the threads.
The hitch is secured using the existing vehicle weldnuts on both sides, plus two M12 bolts and 1/2" conical washers on each side. The conical washers must be oriented correctly with the toothed side facing the frame. All M12 hardware must be torqued to 79 ft-lbs.
The conical-toothed washers must be oriented with the toothed side facing the vehicle frame. The manual includes a diagram showing the correct orientation on page 2.
For hybrid models: (1) Remove the underbody panel (14 fasteners, 10mm socket); (2) Remove the tie-down bracket (2 bolts, 17mm socket); (3) Remove plastic caps on driver-side frame rail (flathead screwdriver); (4) Remove sensor bracket tabs if present (model year 2021+); (5) Trim 3" × 3" fascia area; (6) Lower the exhaust (2 M8 bolts, 12mm socket); (7) Raise and secure hitch with weldnuts, M12 bolts, and 1/2" conical washers; (8) Torque M12 hardware to 79 ft-lbs; (9) Raise exhaust and secure with M8 bolts, 3/8" conical washers, and M8 nuts; (10) Torque M8 hardware to 16 ft-lbs; (11) Trim underbody panels; (12) Reinstall underbody panel.
For non-hybrid models: (1) Remove the tie-down bracket (2 bolts, 17mm socket); (2) Remove plastic caps on driver-side frame rail (flathead screwdriver); (3) Trim 3" × 3" fascia area at center line of bottom edge; (4) Raise and secure hitch with weldnuts, M12 bolts, and 1/2" conical washers; (5) Torque M12 hardware to 79 ft-lbs.
Yes. On hybrid models, the exhaust must be lowered by removing two M8 bolts from the bracket on the passenger side (12mm socket) before raising the hitch. After the hitch is secured, the exhaust is raised back into position and secured with the same M8 bolts, 3/8" conical washers, and M8 hex nuts, then torqued to 16 ft-lbs.
Slight bending or modification to the exhaust heat shield may be needed to avoid contact with the hitch. This should be assessed during installation.
Slide the rear part of the panel into place first to ease reinstallation. Secure using all fourteen fasteners that were removed during the initial removal step. Use a 10mm socket.
The hitch uses: 4 hex bolts (M12 × 1.25"), 2 hex nuts (M8 × 1.25"), 2 conical-toothed washers (3/8"), and 4 conical-toothed washers (1/2"). M12 bolts are torqued to 79 ft-lbs; M8 bolts are torqued to 16 ft-lbs (hybrid models only).
Periodic inspection of the trailer hitch should be performed to ensure all mounting hardware remains tight and structural components are secure. To help prevent damage to the product or vehicle, refer to the specified torque specifications when securing hardware.
For information on safely towing your trailer, visit curtmfg.com/understanding-towing. For product support, contact CURT at 877-287-8634 or visit curtmfg.com.
The installation is rated as moderate difficulty. The level of difficulty is based on time and effort involved and may vary depending on the installer's level of expertise, the condition of the vehicle, and having proper tools and equipment. A full-color instruction manual and helpful videos are available at curtmfg.com.
Yes. CURT stands behind its products with industry-leading warranties. To get copies of the product warranties, register your purchase, or provide feedback, visit warranty.curtgroup.com/surveys.
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