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2018 - 2020 Buick Regal TourX
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Complete CURT Class 2 1-1/4" trailer hitch and 4-flat custom wiring kit engineered for the 2018 - 2020 Buick Regal TourX. 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 the next checkpoint is on your adventure -- whether it's getting your bike on the trail before sunrise or making it to the campground before dark -- CURT class 2 hitches let you Bring It with confidence. These receiver hitches are made to handle most light-duty towing applications and offer a custom fit for your vehicle. Typically used on full-size cars, crossovers, compact SUVs, minivans or even compact pickup trucks, a CURT class 2 trailer hitch complements the design of smaller vehicles. This particular class 2 hitch is made to be a custom hitch for certain years of the Buick Regal TourX (to verify vehicle compatibility, see application info). It offers a weight carrying capacity of 3,500 lbs. GTW and 350 lbs. TW. Class 2 trailer hitches can typically be used to tow a variety of lightweight trailers, such as a small utility trailer, small fishing boat trailer or popup camper (NOTE: Never exceed the lowest weight capacity of any towing component). They are also perfect for adding cargo space to your vehicle with a bike rack or cargo carrier. This class 2 hitch features a 1-1/4" receiver tube to accept a ball mount shank or other hitch-mounted accessory. For safety, it is tested in accordance with SAE J684. A custom trailer hitch design requires extra care, and as such, CURT class 2 hitches are engineered using real vehicles and hands-on research. We use high-strength steel, robotic welding and rigorous testing to produce hitches that are built to fit your lifestyle. To ensure that each hitch will be a reliable extension of your vehicle, we also finish our hitches in a co-curing of liquid A-coat and black powder coat, giving them long-lasting rust and wear resistance.
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 Buick Regal TourX (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 - 2020 | Buick Regal TourX | — |
The 18 - 20 Buick Regal TourX Curt 1-1/4", Class 2 Trailer Tow Hitch + 4-flat Wiring Kit 12173 (Part #CHW-218) fits the following vehicles: 2018-2020 Buick Regal TourX. Always verify your specific year, make, and model before ordering.
The 18 - 20 Buick Regal TourX Curt 1-1/4", Class 2 Trailer Tow Hitch + 4-flat Wiring Kit 12173 (Part #CHW-218) fits 2018-2020 Buick Regal TourX models. The 2020 model year is the last year covered by this part number. For newer models, check for an updated version.
Yes, the 18 - 20 Buick Regal TourX Curt 1-1/4", Class 2 Trailer Tow Hitch + 4-flat Wiring Kit 12173 (Part #CHW-218) is designed to fit the 2018-2020 Buick Regal TourX.
The 18 - 20 Buick Regal TourX Curt 1-1/4", Class 2 Trailer Tow Hitch + 4-flat Wiring Kit 12173 (Part #CHW-218) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Yes, CURT hitch 12173 is designed for 2018-Present Buick Regal Tour X Wagon models. Confirm your vehicle matches this specification before purchasing.
The hitch has a gross load capacity of 3,500 lbs trailer weight and 350 lbs tongue weight when used as a weight-carrying hitch. You must never exceed your vehicle manufacturer's recommended towing capacity.
The hitch weight is 40 lbs.
The hitch is designed for use with ball mount #45521 (Euro mount). Optional ball mounts are available: #45571 (1 7/8" ball) and #45572 (2" ball).
Required tools are: ratchet, torque wrench, 8" socket extension, 7mm socket, 13mm socket, 15mm socket, 11/16" socket, masking tape, aviation shears, needle nose pliers, and safety glasses. Using proper tools will greatly improve the quality of the install and reduce installation time.
The hitch includes: (4) M10x1.5 flange nuts (20-00164), (4) 7/16" fishwire (7_16 FISHWIRE), (4) 7/16-14 UNC 1-1/2" carriage bolts grade 8 (10-10282), (4) 7/16-14 UNC grade 8 serrated flange nuts (20-00103), (4) .250 x .88 x 2.25" square hole spacers (CM-SP2), (2) .250 x 1.50 x 2.00" square hole spacers (CM-SP1), and (4) M10x1.5 65mm hex head cap screws class 8.8 (10-10125).
Two people may be required to ease installation. If you are hesitant to undertake this task on your own, contact an authorized CURT installer for additional assistance.
Professional installation takes approximately 38 minutes. Novice (DIY) installation takes approximately 40 minutes.
No, drilling is not required. The installation uses existing mounting holes on the frame rails.
Two trimming tasks are required: (1) Trim the heat shield using aviation shears as shown in the Heat Shield Trim Diagram (approximately 12.00" x 2.50" area). (2) Optionally trim the center fascia tab as shown in the Fascia Tab Trim Diagram (approximately .250" cut line) to ease installation. All dimensions are approximate; confirm fit prior to trimming.
Installation sequence: (1) Lower exhaust by removing 2 bolts on each side using 15mm socket; support exhaust to avoid damage. (2) Remove heat shield using needle nose pliers to loosen speed nuts, trim using aviation shears, and reinstall. (3) Fishwire 2 carriage bolts and 2 CM-SP2 spacers through access hole and out mounting holes on each side. (4) Remove 1 screw on each side using 7mm socket from rear fascia. (5) Raise hitch into position and secure using 2 flange nuts on each side. (6) Reinstall exhaust bracket on hitch mounting plate using 2 M10x70 bolts and 1 CM-SP1 spacer on each side. (7) Torque all hardware.
Fishwire is a technique used to thread fasteners through tight spaces. For this hitch, you use the 7/16" fishwire (included) to thread 2 carriage bolts and 2 CM-SP2 spacers through the access hole and out the mounting holes on each side of the frame rail. Refer to the Fishwire Technique Diagram in the manual for the detailed procedure.
No, you only need to lower the exhaust. Remove the 2 bolts attaching the exhaust bracket to the rear of the vehicle on each side using a 15mm socket. Support the exhaust to avoid damage. After installing the hitch, reinstall the exhaust bracket on the hitch mounting plate.
Torque all 7/16" hardware to 59 ft-lbs and all M10 hardware to 45 ft-lbs. This includes the 7/16" carriage bolts and flange nuts, and the M10x1.5 hex head cap screws.
Wear safety glasses at all times while installing this product. Support the exhaust to avoid damage when lowering it. Before beginning installation, read all instructions thoroughly. If you are hesitant to undertake this task on your own, contact an authorized CURT installer for additional assistance.
All non-trailer (wheel-less) loads applied to this hitch must be supported by 18050 stabilizing straps. See the CURT catalog or visit www.curtmfg.com for further information.
Periodically check this receiver hitch to ensure all fasteners are tight and all structural components are sound. This ongoing maintenance is important for safe operation.
CURT Manufacturing warrants this product to be free of defects in material and/or workmanship at the time of retail purchase by the original purchaser. If the product is found to be defective, CURT may repair or replace it at their option when returned prepaid with proof of purchase. Alteration to, misuse of, or improper installation voids the warranty. CURT's liability is limited to repair or replacement of defective products and excludes liability for incidental or consequential loss or damage.
Yes, CURT 12173 is designed for 2018-Present Buick Regal Tour X Wagon models.
3,500 lbs trailer weight and 350 lbs tongue weight. Never exceed your vehicle manufacturer's recommended towing capacity.
No drilling is required. Heat shield and fascia trimming using aviation shears is required.
Ratchet, torque wrench, 8" socket extension, 7mm/13mm/15mm/11/16" sockets, masking tape, aviation shears, needle nose pliers, and safety glasses.
Professional installation: 38 minutes. Novice DIY installation: 40 minutes.
7/16" hardware: 59 ft-lbs. M10 hardware: 45 ft-lbs.
Yes, the Curt 56389 is designed for the Buick Regal TourX passenger car. The harness connects behind the driver and passenger side taillight housings, outside the trunk.
The harness is rated for 3.0 amps per side on signal circuits and 6.0 amps total on tail/running circuits. Do not exceed these ratings or the tow vehicle lamp load rating, whichever is lower. Exceeding the rating can cause loss of warranty, overheating and potential fire.
The battery connection must be fuse-protected with a 10-amp maximum fuse. Exceeding this specification can cause loss of warranty, overheating and potential fire.
Required tools are: 10mm socket, socket extension, ratchet, trim panel removal tool, Phillips screwdriver, side cutter, wire crimper, wire stripper, and fish wire.
The manual does not specify whether the battery must be disconnected. Contact the vehicle manufacturer or Curt Manufacturing for this safety requirement.
Open the vehicle hatch. Remove the two fasteners securing the taillight in place using a 10mm socket. Gently pull the taillight rearward, taking care not to damage the alignment tabs. The vehicle taillight wiring harness connectors will be visible on the backside of the taillight housing. Separate these connectors from the taillight, taking care not to damage the locking tabs.
Route the custom wiring harness with the yellow wire from underneath the vehicle along the rear bumper and up behind the fender to the opening underneath the removed driver side taillight. Insert the harness end with the yellow wire between the separated connectors, ensuring the connectors are fully inserted with locking tabs in place. Repeat this process on the passenger side, routing the harness end with the green wire along the rear bumper.
Locate a suitable grounding point near the connector, such as an existing screw with nut in the vehicle frame. If no existing screw is available, drill a 3/32" pilot hole for the provided screw. The area must be free of rust, dirt and paint. Secure the white ground wire using the ring terminal and provided screw.
Drilling may be required. If a suitable existing screw with nut is not available in the vehicle frame near the taillight connector, you must drill a 3/32" pilot hole for the provided ground screw. Before drilling, check for miscellaneous items that may be hidden behind or under any surface to avoid damage and personal injury.
Locate a flat, clean surface along the vehicle rear bumper that is out of the path of spray and debris from the rear wheels and road. Adhere the black converter box using the provided double-sided tape and cable ties. Failure to mount the box in a protected area can cause loss of warranty, product failure, overheating and potential fire.
Route the black power wire from the vehicle battery as shown on the included CME-PCL-INS sheet. Refer to that sheet for specific routing instructions.
When not in use, roll up the 4-flat connector and store it in a convenient, out-of-the-way location. When in use, route it to the center of the vehicle. Secure any loose wires with the provided cable ties.
Test for proper function by using a test light or connecting a properly wired trailer. All steps must be followed to ensure the wiring harness functions properly.
Reinstall all items removed during installation. Install the provided 4-flat dust cover to help prevent corrosion. Test the harness for proper function using a test light or a properly wired trailer.
The Curt 56389 is designed for the Buick Regal TourX passenger car.
You need a 10mm socket, socket extension, ratchet, trim panel removal tool, Phillips screwdriver, side cutter, wire crimper, wire stripper, and fish wire.
The battery connection must be fuse-protected with a 10-amp maximum fuse.
Drilling may be required if no existing screw with nut is available in the vehicle frame. If needed, drill a 3/32" pilot hole for the provided ground screw.
Mount the black converter box on a flat, clean surface along the rear bumper, away from spray and debris from the rear wheels and road, using the provided double-sided tape and cable ties.
Test for proper function using a test light or by connecting a properly wired trailer.
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