
Ask a Question About This Product
Our in-house experts typically reply within one business day.
Our in-house experts typically reply within one business day.
CURT
Verify Fitment
Select your vehicle to confirm this part fits.











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 3 2" trailer hitch and 4-flat custom wiring kit engineered for the 2008 - 2011 Mercury Mariner With factory 1-1/4" receiver hitch. 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 Ford Escape, Mazda Tribute and Mercury Mariner (see application info to verify vehicle compatibility). It provides a weight carrying capacity of 3,500 lbs. GTW and 350 lbs. TW. It is also compatible with a weight distribution hitch for level towing and a rating of 5,000 lbs. WD and 500 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. 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 Ford Escape, Mazda Tribute, and Mercury Mariner (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 888-634-9494One-Year Limited
1 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2008 - 2011 | Mercury Mariner | With factory 1: 1/4" receiver hitch |
The 05 - 11 Mercury Mariner With factory 1-1/4" receiver hitch Curt 2", Class 3 Trailer Tow Hitch + 4-flat Wiring Kit 13651 (Part #CHW-2413) fits 2005-2011 Mercury Mariner models. The 2011 model year is the last year covered by this part number. For newer models, check for an updated version.
Yes, the 05 - 11 Mercury Mariner With factory 1-1/4" receiver hitch Curt 2", Class 3 Trailer Tow Hitch + 4-flat Wiring Kit 13651 (Part #CHW-2413) is designed to fit the 2005-2011 Mercury Mariner.
The 05 - 11 Mercury Mariner With factory 1-1/4" receiver hitch Curt 2", Class 3 Trailer Tow Hitch + 4-flat Wiring Kit 13651 (Part #CHW-2413) fits the following vehicles: 2005-2011 Mercury Mariner. Always verify your specific year, make, and model before ordering.
The 05 - 11 Mercury Mariner With factory 1-1/4" receiver hitch Curt 2", Class 3 Trailer Tow Hitch + 4-flat Wiring Kit 13651 (Part #CHW-2413) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Yes, part number 13651 is designed for Ford Escape, Mazda Tribute, and Mercury Mariner vehicles equipped with OEM hitches. Verify your vehicle has an OEM hitch before purchasing, as this hitch is specifically for vehicles with existing factory hitches.
Yes, the Curt 13651 is compatible with Mazda Tribute and Mercury Mariner vehicles that have OEM hitches. This hitch is designed for all three vehicle models: Ford Escape, Mazda Tribute, and Mercury Mariner.
No. The Curt 13651 is specifically designed for vehicles with OEM hitches. The installation procedure relies on existing weldnuts in the frame rails that are present only on vehicles with factory hitches.
The kit includes: two 1/2-13 UNC carriage bolts (10-10272), two 0.250 x 1.00 x 3.00" square hole spacers (CM-SP6), two 1/2" conical tooth washers (30-00149), two 1/2-13 UNC hex nuts (20-00171), two 0.250 x 1.00 x 2.00" square hole spacers (CM-SP7), four 9/16" conical tooth washers (30-00164), four M14x2 40mm hex cap screws grade 10.9 (10-10404), and two 1/2" fishwires (1_2 FISHWIRE).
Yes. You must remove the existing electrical bracket by removing two screws and rotating the bracket 180 degrees, repositioning the connector to face toward the rear of the vehicle. This is step 1 of the installation procedure.
Yes. Drilling is required. You must drill the driver side frame rail to allow the spacer and bolt to pass through. The manual indicates this is necessary to enlarge the existing frame rail holes.
Possibly. If your vehicle is equipped with an exhaust vibration dampener that interferes with the side plate, you will need to bend or pry the dampener away from the side plate as needed. The manual notes this may be required but is not necessary for all vehicles.
Follow these steps: (1) Remove four existing bolts from inside frame rails and relocate the electrical bracket by removing two screws and rotating it 180 degrees. (2) Use fishwire to pull the carriage bolts and spacers through the enlarged frame rail holes into position. (3) Raise the hitch into position and install conical tooth washers and hex bolts into existing weldnuts. (4) Torque all 1/2" hardware to 110 ft-lbs, then torque all M14 hardware to 126 ft-lbs.
The fishwire is used to pull the carriage bolts and spacers through the previously enlarged frame rail holes and into position. Two 1/2" fishwires are included in the kit for this purpose.
All 1/2" hardware must be torqued to 110 ft-lbs. This includes the 1/2-13 UNC carriage bolts and hex nuts. The 1/2" hardware must be tightened first, before the M14 hardware.
All M14 hardware must be torqued to 126 ft-lbs. This includes the M14x2 40mm hex cap screws grade 10.9. The M14 hardware must be tightened second, after the 1/2" hardware has been torqued to 110 ft-lbs.
The manual does not provide specific capacity values. However, it states: "DO NOT EXCEED VEHICLE MANUFACTURER'S RECOMMENDED TOWING CAPACITY." You must consult your vehicle's owner manual or the manufacturer for the maximum towing capacity your vehicle supports.
Periodically check the receiver hitch to ensure that all fasteners are tight and that all structural components are sound. The manual does not specify a particular interval, so regular visual inspection before towing is recommended.
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. Warranty is voided by alteration, misuse, or improper installation.
Yes, the Curt 13651 is designed for Ford Escape, Mazda Tribute, and Mercury Mariner vehicles with OEM hitches. Your vehicle must have a factory hitch for this product to fit.
Yes, drilling is required to enlarge the driver side frame rail holes. Exhaust bracket modification may also be needed if an exhaust vibration dampener interferes with the side plate.
Torque all 1/2" hardware to 110 ft-lbs first, then torque all M14 hardware to 126 ft-lbs. Tighten in this sequence.
The manual does not specify required tools. Based on the hardware included (carriage bolts, hex nuts, hex cap screws) and the need for drilling, you will need a drill, torque wrench, and standard wrenches or sockets for 1/2" and M14 fasteners. Contact Curt Manufacturing for a complete tool list.
The Curt 56558 is a T-connector trailer tow harness that connects to your vehicle's factory trailer tow harness connector. It allows you to connect a trailer's electrical connector to your vehicle's towing system, enabling trailer lights and brake signals to function properly.
The Curt 56558 is designed for vehicles equipped with a factory trailer tow harness connector located on the driver side underneath the vehicle. Check under your vehicle on the driver side to confirm you have this connector before purchasing. The manual does not list specific vehicle makes, models or years.
You will need: a ratchet, wire cutters, a 10mm socket, and a test light. The test light is used after installation to verify the harness is functioning correctly.
The package includes the T-connector trailer tow harness, cable ties for securing loose wires, and a 4-flat dust cover to help prevent corrosion. A bracket for securing the 4-way connector is not included and must be sourced separately.
Yes. You must disconnect the negative battery terminal before beginning installation. Using a 10mm socket, remove the negative battery terminal and isolate it to prevent it from making contact with a metal object, which could damage the vehicle's electrical system.
1. Disconnect the negative battery terminal using a 10mm socket and isolate it. 2. Locate the factory trailer tow harness connector on the driver side underneath the vehicle. 3. Remove the protective plug carefully without damaging the connector mounting tabs. 4. Insert the trailer tow harness into the mating vehicle connector, being careful not to break or damage the connector tabs. 5. Route the 4-way flat connector along the rear bumper fascia to the center of the vehicle and secure it into a bracket (not included). 6. Secure any loose wires with the provided cable ties. 7. Reconnect the negative battery terminal and install the provided 4-flat dust cover. 8. Test the harness with a test light, 4-flat tester, multimeter, or functioning trailer to verify proper operation.
Set the protective plug aside after carefully removing it. Be careful not to damage the connector mounting tabs during removal. The manual does not specify whether the plug should be retained or discarded after installation.
Route the 4-way flat connector along the rear bumper fascia and over to the center of the vehicle. Secure it into a bracket (not included) and secure any loose wires with the provided cable ties to prevent damage and ensure a neat installation.
Do not exceed the product rating or your tow vehicle's lamp load rating, whichever is lower. The manual does not specify the product's maximum rating. Contact Curt Manufacturing or consult your vehicle's owner manual for specific capacity information.
Yes. The battery connection must be fuse-protected. Exceeding the product rating without proper fuse protection can cause loss of warranty, overheating, and potential damage to the vehicle's electrical system.
After installation, verify that the harness is functioning by attaching the battery and testing with a test light, 4-flat tester, multimeter, or a functioning trailer. This confirms all connections are correct and the harness is ready for use.
Perform periodic inspection of all wires and connections to ensure there is no visible damage or loose connections. This helps prevent corrosion and electrical failures. The provided 4-flat dust cover should be installed to help prevent corrosion.
The Curt 56558 requires a factory trailer tow harness connector on the driver side underneath your vehicle. Check for this connector before purchasing. The manual does not list specific vehicle compatibility.
You need a ratchet, wire cutters, 10mm socket, and test light. A bracket for securing the 4-way connector is not included and must be sourced separately.
Yes, you must disconnect the negative battery terminal using a 10mm socket before beginning installation to prevent electrical damage.
Yes, the battery connection must be fuse-protected. Exceeding the product rating without proper fuse protection can cause overheating and damage.
Test the harness with a test light, 4-flat tester, multimeter, or functioning trailer to confirm proper operation before towing.
On Sale Today
Original price was $422.95. Current price is $329.98.You save $92.97 (22%)
Free Shipping
Ships free on all orders





Quick Ship
In stock and ready to ship — order now!
FREE ShippingFREE SHIPPING
Estimated delivery Mon, Aug 10 - Thu, Aug 13
Order before 2 PM EST Monday–Friday for same-day processing
Guaranteed safe & secure checkout
No reviews have been added for this product.