Our in-house experts typically reply within one business day.
Always the correct part
We know our products
Quality Products
Free Shipping!
Always the correct part
We know our products
Quality Products
Free Shipping!
Complete CURT Class 5 2-1/2" trailer hitch and 7-way custom wiring kit engineered for the 2020 - 2026 F-550 Super Duty Cab & chassis with 34" frame width (O.D.). Vehicle-specific fit, plug-and-play installation, supports trailers with electric brakes, auxiliary 12V power and reverse lights.
This custom kit fits the following vehicles:
All Hardware and Installation Instructions Included!
In the world of commercial towing, more is expected. A job cannot be completed if the equipment cannot handle the workload. That is why CURT developed the Commercial Duty class 5 trailer hitch. Constructed from steel and engineered for power, these class 5 hitches are designed to complement the towing power of full-size, commercial pickup trucks, including diesels and chassis cabs. They can easily handle a variety of oversize trailers, including toy and car haulers, livestock trailers, dumper trailers, large flatbed trailers, large boat trailers and more (NOTE: Never exceed the lowest weight capacity of any towing component). This particular class 5 hitch features a gross trailer weight capacity of 20,000 lbs. and a tongue weight capacity of 2,700 lbs. It is designed to be a custom trailer hitch for certain years of the Ford F350 Super Duty, F450 Super Duty, F550 Super Duty and F650 (to verify your vehicle compatibility, see application info). All CURT Commercial Duty class 5 hitches feature a 2-1/2" x 2-1/2" receiver tube opening to accept the strongest of ball mounts and towing accessories. They are perfect for mounting standard ball mounts, pintle mounts, tow hooks and weight distribution hitches as well as winch mounts and cargo carriers. CURT class 5 tow hitches are protected by a co-curing of liquid A-coat and carbide black powder coat finish. They also mount with grade-8 hardware, included with each hitch.
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 setup. 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 vehicle's electrical system and provides a standard 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 harness provides a 7-way RV blade connector socket and is designed to be a custom wiring harness for certain years of the Ford F-250, F-350, F-450, F-550, F-650 Super Duty (see application info to verify fitment). 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.
Experts available to answer your questions
Call 888-634-9494Yes, part number 15845 is designed for 1999–Current Ford F-350, F-450, F-550, and F-650 Cab & Chassis models with a 34" frame. Confirm your vehicle has a 34" frame before ordering.
Yes, Curt part number 15845 is compatible with Ford F-450 and F-550 models from 1999 to current, provided they are Cab & Chassis configuration with a 34" frame.
The hitch weight is 60 lbs.
Yes, part number 15845 can be used as either a weight carrying hitch or a weight distribution hitch. The gross load capacity differs depending on the mode: weight carrying capacity is 20,000 lbs trailer weight and 2,700 lbs tongue weight; weight distribution capacity is also 20,000 lbs trailer weight and 2,700 lbs tongue weight.
Do not exceed your vehicle manufacturer's recommended towing capacity. This hitch has a gross load capacity of 20,000 lbs trailer weight and 2,700 lbs tongue weight when used as a weight carrying hitch, and the same capacity when used as a weight distribution hitch. However, your Ford's actual towing limit may be lower. Consult your vehicle's owner manual for the manufacturer's recommended towing capacity and do not exceed it.
You will need: a ratchet, a torque wrench, a 3/4" socket, a drill, and a 19/32" drill bit.
The kit includes: 6× 1/2-13 UNC bolts, 1-1/2" long, Grade 8, zinc-plated (part 10-10287); 4× 9/16-12 UNC bolts, 1-3/4" long, Grade 8, zinc-plated (part 10-10328); 6× 1/2-13 UNC serrated flange nuts, Grade 8, zinc-plated (part 20-00062); 4× 9/16-12 UNC serrated flange nuts, Grade 8, zinc-plated (part 20-00104); 4× spacers 0.313" × 1.50" × 2.00" with 9/16" square hole (part CM-SP71); and 2× 0.313" spacers (part CM-SP142).
Professional installation takes approximately 60 minutes. DIY installation by a novice takes approximately 75 minutes.
Yes, drilling is required. You must drill one hole on each side of the frame using a 19/32" drill bit. The hole location is marked by raising the hitch into position and marking the hole furthest from the bumper before drilling.
Use a 19/32" drill bit to drill the required mounting holes in the frame.
1. Raise the hitch into position and clamp it in place, using the rivet clearance holes in the side plates for alignment. 2. Mark the hole furthest from the bumper for drilling, then drill it using a 19/32" drill bit (both sides). 3. Fasten the hitch to the frame, fastening the holes in the back of the frame first, then the drilled holes in the front. 4. Attach the mounting plates to the hitch and fasten to the truck. 5. Torque all fasteners.
Torque all 1/2" hardware to 110 ft-lbs.
Torque all 9/16" hardware to 130 ft-lbs.
Periodically check the receiver hitch to ensure that all fasteners are tight and that all structural components are sound. This ongoing inspection helps maintain safe operation and extends the life of the hitch.
Yes, if you have a 1999–Current Ford F-350, F-450, F-550, or F-650 Cab & Chassis with a 34" frame.
Yes. You must drill one hole on each side of the frame using a 19/32" drill bit.
Ratchet, torque wrench, 3/4" socket, drill, and 19/32" drill bit.
Torque 1/2" hardware to 110 ft-lbs and 9/16" hardware to 130 ft-lbs.
60 lbs.
20,000 lbs trailer weight and 2,700 lbs tongue weight. Do not exceed your vehicle manufacturer's recommended towing capacity.
Part 56443 is designed for trucks with factory connectors located on the driver-side frame rail or rear-most cross member. Check your vehicle's frame rail and rear cross member for existing connectors that match the appearance of those shown in the manual. If your truck has these factory connectors, the harness is compatible. If you cannot locate matching connectors, your vehicle may not be equipped for this product.
Part 56443 is a custom wiring harness that connects to a 7-way RV blade connector for trailer lighting and braking functions. It routes from the vehicle's factory connectors to a round USCAR plug that mounts to the vehicle, allowing you to connect a trailer with compatible wiring.
You need a flathead screwdriver. Cable ties are also recommended to secure loose wires during routing. A test light, 7-way RV blade tester, or functioning trailer is required to verify proper function after installation.
Yes. Before beginning installation, locate your vehicle's battery in the engine compartment (typically on the passenger side for most gas engines, and on both sides for some gas engines and all diesel engines) and disconnect the negative battery terminal. Fasten this wire down and away from the battery while completing the installation.
The factory connectors are located on the driver-side frame rail or the rear-most cross member of your vehicle. They will resemble the connectors included with your new custom wiring harness. Separate these connectors from their dust covers carefully, taking care not to damage the locking tabs.
Route the harness to the 7-way mounting location on your vehicle. Install the round USCAR plug into the 7-way RV blade connector and mount it to the vehicle. Use cable ties as needed to secure any loose wires along the route. Once mounted, reconnect the negative battery terminal if it was disconnected.
After connecting the 12-volt power wire to the harness and reconnecting the battery, verify that the harness is functioning by attaching the battery and testing with a test light, 7-way RV blade tester, or a functioning trailer. This confirms all connections are working properly before towing.
Do not exceed the product rating or your tow vehicle's lamp load rating, whichever is lower. Consult your vehicle's owner's manual and the product documentation for the specific rating of part 56443.
If your vehicle is not factory equipped with trailer brakes, you must consult your vehicle's owner's manual to verify that your vehicle can utilize components and wiring for the trailer braking function. The owner's manual will also specify any fuses that need to be installed. Do not assume your vehicle supports trailer braking without checking the owner's manual first.
Perform periodic inspection of all wires and connections to ensure there is no visible damage or loose connections. Regular maintenance helps prevent electrical failures and ensures safe trailer operation.
The manual provides a wiring location guide for trucks with five reference points: T1 (behind driver side taillight housing), T2 (behind passenger side taillight housing), T3 (behind driver side rear bumper), T4 (behind center of rear bumper fascia), and T5 (behind passenger side rear bumper). These locations help you route the harness correctly during installation.
Part 56443 fits trucks with factory connectors on the driver-side frame rail or rear-most cross member. Check your vehicle for these connectors before purchasing.
You need a flathead screwdriver, cable ties, and a test light or 7-way RV blade tester to verify function after installation.
Yes, disconnect the negative battery terminal before starting installation. Fasten the wire down and away from the battery during the installation process.
Do not exceed the product rating or your tow vehicle's lamp load rating, whichever is lower. If your vehicle lacks factory trailer brakes, verify in the owner's manual that your vehicle can use trailer braking components.
On Sale Today
Original price was $722.90. Current price is $492.98.You save $229.92 (32%)
Free Shipping
Ships free on all orders
Quick Ship
In stock and ready to ship — order now!
FREE ShippingFREE SHIPPING
Estimated delivery Sat, Aug 15 - Tue, Aug 18
Order before 2 PM EST Monday–Friday for same-day processing
Guaranteed safe & secure checkout
No reviews have been added for this product.