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CURT

Curt Trailer Hitch Receiver - Custom Fit - Class II - 1-1/4"

Part Number: C12173

11 Reviews | 9 Questions

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$273.09

Retail:$453.95

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Product Images

curt trailer hitch for towing receiver - custom fit class ii 1-1/4 inch

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In Use/Installed

2018 buick regal tourx trailer hitch curt for towing class ii receiver - custom fit 1-1/4 inch

2018 buick regal tourx trailer hitch curt for towing class ii on a vehicle

2018 buick regal tourx trailer hitch curt for towing receiver - custom fit class ii 1-1/4 inch

2018 buick regal tourx trailer hitch curt class ii c12173

2018 buick regal tourx trailer hitch curt class ii on a vehicle

2018 buick regal tourx trailer hitch curt for towing on a vehicle

2018 buick regal tourx trailer hitch curt c12173

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Videos

Beginner’s Guide to Installing the Curt Trailer Hitch Receiver on a 2018 Buick Regal TourX

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SCHEDULE AN INSTALLATION

Perfect for light-duty towing, this custom, vehicle trailer hitch receiver features fully welded, gloss powder coated steel construction. Drawbar sold separately. Great Prices for the best trailer hitch from CURT. Curt Trailer Hitch Receiver - Custom Fit - Class II - 1-1/4" part number C12173 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.

All Info
Reviews (11)
Q & A (0)
Related Parts
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CURT Trailer Hitch - C12173

Highlights

Custom Fit for Your Vehicle: Mounts to existing attachment points
Tows up to 3,500 lbs (GTW): Suitable for small campers, boats, or utility trailers
Holds up to 350 lbs (TW): Works with light-duty bike racks and cargo carriers
Bolt-On Installation: Mounts with included hardware—no welding required
Durable Steel Construction: Fully welded, square-tube design built for lasting strength
Rust-Resistant Finish: Gloss black powder coat over base coat helps prevent corrosion

Features to know about

Tow Small Trailers and Carry Gear with Confidence: Class II Strength with 3,500 lbs GTW and 350 lbs TW

Built for light-duty towing, this hitch gives you the muscle to pull a small camper, boat, or utility trailer. With a maximum gross trailer weight of 3,500 lbs and tongue weight of 350 lbs, it’s ideal for everyday hauling without overdoing it. The 1-1/4" x 1-1/4" receiver also works great for bike racks and cargo carriers when you just need extra space for trips or weekend projects.

Install It Yourself Without the Hassle: Bolt-On Design, No Welding Required

You don’t need a lift or a shop to get this hitch on—just basic tools and some time. The bolt-on installation lines up with existing mounting points so there’s no drilling or welding needed. A full hardware kit and instructions are included to make the process smooth from start to finish.

Count on Long-Term Durability: Fully Welded Steel with Gloss Black Powder Coat

The square-tube design is precision welded for strength and reliability. A gloss black powder coat finish is applied over a protective base coat to fight off rust and corrosion so the hitch stays looking good and performing strong through years of use.

Keep a Clean, Factory Look: Concealed Cross Tube Design

The cross tube sits up out of sight for a tidy appearance under the rear bumper. It keeps the back end looking uncluttered while still giving you the function of a sturdy hitch when you need it.

Specs

Dimensions

Receiver opening: 1-1/4" x 1-1/4"

Weight and Capacity

Rating: Class II
Maximum gross trailer weight: 3,500 lbs
Maximum tongue weight: 350 lbs

Warranty

Limited lifetime warranty

12173 Curt Class 2 Trailer Hitch Receiver

Installation Details C12173 Installation instructions

This Product Fits The Following Vehicles

2018 - 2020 Buick Regal TourX

Customer Satisfaction Score:

98% were satisfied with this product

2% of customers were not satisfied

Wrong item was ordered

2% of customers were not satisfied

Wrong item was ordered

4.4

11 reviews

5 Stars		(6)
4 Stars		(3)
3 Stars		(2)
2 Stars		(0)
1 Star		(0)

by: Aaron 12/03/2020

Product and build quality is great and it fit great as expected. All the hardware and fasteners were exactly as required.
The instructions were detailed correctly for my vehicle, BUT there were 5 words that were easy to overlook (I read it 3 times before interpreting correctly) about the heat shield installation. It could have been a highlighted area with a special note, but in the end, I got it installed AFTER the hitch was mounted. It just took some extra trimming.
This was about a 2 hour install alone with minimal time in adjustment. With two people it could have saved some time but it's going to take at least an hour, even if I was doing it on the same vehicle.

by: Have Not Used Yet Use Hitch More For Bike Carrier 07/18/2020 One Year Later

Installed with recover up to now only use receiver for bike rack Good easy ibstall

Dave S. One Year Later

7/19/2021

fully functional, not issues, paint is in good shape after over a jears of use

by: Relda 06/27/2018

2018 Buick Regal TourX

I RECIEVED THE TRAILER HITCH YESTERDAY , I WAS A LITTLE HESITANT ABOUT GETTING STARTED ON A BIG ENDEVOUR . BOY HOWDY WAS I SURPRISED WHEN THE INSTALL WENT VERY QUICKLY AND EASILY. JUST A GLANCE THROUGH THE INSTRUCTOINS AND EVERYTHING WENT AS THE INSTRUCTION SHEET SAID ! I DID NEED TWO PEOPLE TO SET IT IN PLACE THOUGH. ALL IN ALL IT IS A GREAT PRODUCT AND BUILT WELL . THANK YOU ETRAILER .

by: Jim 03/30/2025

Instructions and install kit were great.

by: Timothy 08/14/2022

Great hitch and installation instructions. Purchased for a great price and shipped very quickly

by: Rodrick 10/25/2022

Quick delivery on custom hitch. Everything looks OK, no damage

by: Daniel 06/21/2020

Solid construction. Really improves the functionality of the adventure wagon. Takes way longer to install than the 1 hour Curt says though. Took the dealership 3+ hours with four guys working on it at one point. I wouldn’t recommend trying it yourself.

by: C 09/27/2019

2018 Buick Regal TourX

You had what I wanted. Even with my mix up, I have the proper hitch and the other returned.

by: John 05/09/2026

by: Mary-Marae 04/20/2021 One Year Later

by: William 02/12/2021

true

See what our Experts say about this CURT Trailer Hitch

Do you have a question about this Trailer Hitch?

Picture of Curt Trailer Hitch Installedon 2018 Buick Regal Tourx
Since most trailer hitches hang below the rear fascia/bumper they typically do end up cutting the ground clearance down a little bit. I was able to find a picture of the Curt hitch part # C12173 installed on a 2018 Buick Rregal Tourx like yours to show you how it's going to hang in relation to the rest of the trailer.
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Recommended Trailer Hitch for 2019 Buick Regal TourX
There is a trailer hitch that fits your 2019 Buick Regal TourX but the only options are Class II hitches with a 1-1/4 inch receiver. The hitch I recommend for your '19 Regal TourX is the Curt # C12173 because it does not require fascia trimming to install and like all Curt trailer hitches is made in the U.S.A. I have added a link to the installation instructions of this hitch for you to check out as well.
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Trailer Hitch Receiver For 2018 Buick Regal TourX Using 2 Bike Rack and Cargo Carrier
The Curt Trailer Hitch Receiver # C12173 is only available with a 1-1/4" receiver tube on your 2018 Buick Regal TourX. You can use a Curt Trailer Hitch Receiver Adapter # C45785 to allow you to still use your 2" hitch mounted accessories. The adapter does reduce the receiver capacity by 50%, which would allow you to carry 175lbs with the Draw-Tite receiver. I recommend using a Roadmaster Quiet Hitch for 1-1/4" Trailer Hitches # RM-061-125 to remove the rattle in the adapter to the receiver...
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Recommended Trailer Wiring Harness for 2019 Buick Regal TourX
Based on my research your 2019 Buick Regal TourX doesn't come from the factory with a pre-installed trailer wiring connecter but one can be easily added. For this I recommend the Curt T-One Wiring Harness # C56389. This custom harness simply gets plugged into existing ports behind the driver and passenger side tail lights. After running the hot lead up to the battery you will have a fully functional 4-Way connector to connect with and power a trailer's basic signal lights. I have attached...
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Trailer Hitch and Wiring Recommendation for 2018 Buick Regal TourX
For your 2018 Buick Regal TourX I'd recommend the Curt hitch part # C12173 over the Draw Tite # 36661 although both are really great options with a similar design. The reason I recommend the Curt is that in general we see the best quality control from their hitches and it seems the powdercoat is a little stronger which prevents flaking and corrosion. Then for trailer wiring you will need the Curt T-Connector part # C56389 as it installs the easiest and is a great harness. Then for a...
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How Far From The Ground Does The Curt Trailer Hitch Sit On a 2018 Buick Regal TourX?
When we installed the Curt Trailer Hitch Receiver # C12173 on a 2018 Buick Regal TourX in our shop we found it to have a ground clearance of approximately 9". You can compare this with what you have on your factory hitch as we do not have that information. This is currently our only receiver for your Regal.
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Can Hands Free Tailgate Still be Used on 2018 Buick Regal TourX with a Trailer Hitch Installed
We haven't been able to test fit the Curt Trailer Hitch Receiver with a 2018 Buick Regal TourX that has the hands free liftgate yet but what we have found is you typically just have to kick to the left or right of the receiver instead of waving your foot back and forth. It will slightly interfere but you shouldn't lose the feature altogether. The installation instructions have been linked for you to reference as well.
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Recommended Trailer Hitch Receiver Compatible with 2019 Buick Regal Sportback AWD
The Curt Trailer Hitch Receiver # C12173 is only a fit for 2018 - 2020 Buick Regal TourX. For your 2019 Buick Regal Sportback, all the versions will use the Curt Trailer Hitch Receiver # C12185. So, that is the hitch receiver I recommend for your Sportback AWD. If you will be towing with this hitch, I recommend the Curt T-Connector Vehicle Wiring Harness # C56389, ball mount # C45521, hitch ball # A-82, and pin and clip # F-4.
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Trailer Hitch Fit for 2018 Buick Regal TourX
For your 2018 Buick Regal Tourx the Curt hitch part # C12173 is a confirmed fit and would work well.
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Do you have a question about this Trailer Hitch?

Info for this part was:

Edited by:

Lindsey S

Expert Research:

Jameson C

Video Edited:

Jacob T

Updated by:

Wilson B

Updated by:

Kristina F

Updated by:

Isabelle B

Written by:

Ronnie R

Test Fit:

Conner L

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