1 / 4CURT 40078 2-5/16-Inch Chrome Trailer Hitch Ball, 15,000 lb
The CURT 40078 trailer hitch ball is listed with a 2-5/16-inch ball, a 1-1/4-inch-diameter by 2-5/8-inch-long shank and a 15,000-pound gross trailer weight rating. Its chrome finish and fine-thread shank suit buyers whose coupler and ball mount match those dimensions.
At a glance
- Rated for up to 15,000 pounds gross trailer weight, according to the listing.
- The 2-5/16-inch ball is intended for a matching 2-5/16-inch coupler.
- Fine threads, zinc-plated hex nut and helical lock washer are described for installation.
- Chrome plating is claimed to protect against corrosion from rain, dirt and rust.
- The manufacturer says the ball is tested to U.S. VESC specifications.
Often bought together
Pros and cons
Pros
- Listed ball and shank dimensions make it easier to compare the part with a coupler and ball-mount hole.
- The listed rating supports consideration for heavier trailer loads, subject to the ratings of the rest of the towing setup.
- Nut and helical lock washer are stated as included, and the listing specifies installation torque.
Technical specifications
12 specifications| Brand | CURT |
|---|---|
| Model | 40078 |
| Gross trailer weight rating | 15,000 pounds |
|---|---|
| Ball diameter | 2-5/16-inch |
| Shank diameter | 1-1/4-inch |
| Shank length | 2-5/8 inches |
| Weight listed | 4.1 pounds |
|---|---|
| Installation torque required | 450 lb.-ft. |
| Material listed | Alloy Steel |
|---|---|
| Finish | Chrome plating |
| Compatible vehicle types listed | Marine-Personal-Craft, Pickup Trucks, Sport-Utility-Vehicles, Trailer, Van |
|---|---|
| Manufacturer warranty description | Limited Lifetime Warranty (One-Year Finish, One-Year Parts) |
What to know before buying
- Confirm the coupler size, ball-mount hole and shank clearance, and ensure every component and vehicle in the towing setup is rated for the intended load. Installation torque is listed as 450 lb.-ft. Follow the vehicle and mount requirements as well.
What’s in the box
- 2-5/16-inch trailer ballIncluded
- Zinc-plated hex nutCheck selected pack
- Helical lock washerCheck selected pack
Check which accessories are included in your selected pack before buying.
Who is it for?
A good fit for
- Buyers needing a 2-5/16-inch trailer ball with a 1-1/4-inch shank for a compatible ball mount.
- Owners towing trailers whose coupler and towing setup are compatible with the stated dimensions and rating.
Less suited to
- Buyers whose coupler is not 2-5/16 inches or whose ball mount does not accept a 1-1/4-inch-diameter, 2-5/8-inch-long shank.
Customer reviews on Amazon
- 5 stars
81% 81% - 4 stars
12% 12% - 3 stars
7% 7% - 2 stars
0% 0% - 1 star
0% 0%
Aggregate ratings lean positive, with most reported ratings in the five-star category, but a smaller share are lower. With no written feedback provided, these figures do not establish specific strengths or problems. They offer limited context and do not verify the stated fit or towing rating.
Frequently asked questions
What coupler size does this ball fit?
The listing specifies a 2-5/16-inch ball intended for a matching 2-5/16-inch coupler.
What are the shank dimensions?
The listing gives a 1-1/4-inch shank diameter and a length of 2-5/8 inches.
What is the stated towing rating?
The manufacturer listing rates it for up to 15,000 pounds gross trailer weight. The towing setup's other components and vehicle ratings also matter.
What installation torque does the listing specify?
The listing calls for 450 lb.-ft. of torque and states that a zinc-plated hex nut and helical lock washer come with the ball.
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