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2017 - 2021 Volvo S90
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Complete CURT Class 3 2" trailer hitch and 5-flat wiring kit (with 4-way to 5-way adapter for surge brakes) engineered for the 2017 - 2021 Volvo S90. 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 Volvo S90 (see application info to verify vehicle compatibility). It provides a weight carrying capacity of 5,000 lbs. GTW and 500 lbs. TW. 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.
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 Volvo XC90 (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 |
|---|---|---|
| 2017 - 2021 | Volvo S90 | — |
The 17 - 21 Volvo S90 Curt 2" Class 3 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 13305 (Part #5W-CHW-3063) fits the following vehicles: 2017-2021 Volvo S90. Always verify your specific year, make, and model before ordering.
The 17 - 21 Volvo S90 Curt 2" Class 3 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 13305 (Part #5W-CHW-3063) fits 2017-2021 Volvo S90 models. The 2021 model year is the last year covered by this part number. For newer models, check for an updated version.
Yes, the 17 - 21 Volvo S90 Curt 2" Class 3 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 13305 (Part #5W-CHW-3063) is designed to fit the 2017-2021 Volvo S90.
The 17 - 21 Volvo S90 Curt 2" Class 3 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 13305 (Part #5W-CHW-3063) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Yes, CURT part 13305 is designed for 2017-Present Volvo S90 Sedan models. Confirm your vehicle matches this year range and body style before purchasing.
The manual specifies this hitch is for 2017-Present Volvo S90 Sedan only. Fitment for other Volvo models or years is not covered in this manual. Contact CURT technical support at 877-287-8634 or visit www.curtmfg.com to confirm compatibility with other vehicles.
Maximum 5,000 lbs trailer weight and 500 lbs tongue weight. Never exceed your vehicle manufacturer's recommended towing capacity.
The maximum tongue weight is 500 lbs. This is the downward force applied to the hitch ball. Do not exceed this limit or the vehicle manufacturer's recommended towing capacity.
No. All non-trailer (wheel-less) loads applied to this hitch must be supported by CURT 18050 stabilizing straps. Failure to properly support non-trailer loads will void the product warranty. See the CURT catalog or visit www.curtmfg.com for information on stabilizing straps.
Torque wrench, ratchet, sockets (8mm, 10mm, 15mm), 8-inch extension, T-25 Torx bit socket, pry bar, aviation shears, crescent wrench, and safety glasses.
Yes. A T-25 Torx bit socket is required to remove multiple fasteners during installation: 4 screws underneath the rear fascia, 5 screws along each rear wheel well, and 1 screw behind the wheel well cover.
Yes. Aviation shears are required to trim a 3.25" x 5.00" section of the rear fascia during installation (step 7). The manual notes that all trim dimensions are approximate and you should confirm fit prior to trimming.
Three socket sizes are required: 8mm (for taillight nuts), 10mm (for trunk liner guard bolts and plastic nuts), and 15mm (for bumper beam nuts). An 8-inch extension is also needed.
The manual does not specify whether battery disconnection is required. Contact CURT technical support at 877-287-8634 for guidance on this step.
Two people may be required to ease installation, though the manual does not state whether a second person is mandatory. If you are hesitant to undertake this task on your own, contact an authorized CURT installer.
Temporarily remove trunk contents and rear fascia to access the installation area. These items are reinstalled at the end of the installation process.
No drilling is required. The hitch uses existing vehicle studs for alignment.
Yes. You must trim a 3.25" x 5.00" section of the rear fascia using aviation shears. The manual notes that all dimensions are approximate and you should confirm fit prior to trimming.
Trim a 3.25" x 5.00" section using aviation shears as shown in the trim diagram. The manual states that all dimensions are approximate, so you should confirm fit prior to trimming to ensure proper clearance.
Yes. The trimmed rear fascia is reinstalled after hitch installation. The trim is permanent and cannot be reversed.
1. Remove 4 screws from underneath rear fascia (T-25). 2. Remove 5 screws along each rear wheel well (T-25). 3. Pull wheel well cover back and remove 1 screw (T-25), including plastic clip. 4. Remove 2 capped nuts and 2 bolts from trunk liner guard (crescent wrench and 10mm socket). 5. Remove 5 plastic nuts from trunk liner (10mm socket). 6. Remove plastic push pins and 3 taillight nuts on each side (8mm socket). 7. Remove and trim rear fascia (3.25" x 5.00" section with aviation shears). 8. Remove 3 nuts on each side of bumper beam (15mm socket). 9. Install hitch using existing studs, reinstall bumper loosely. 10. Torque all M10 hardware to 45 ft-lbs and reinstall components in reverse order.
Install the hitch on the rear of the vehicle frame using existing vehicle studs to align. The studs are located on both sides of the vehicle frame and guide proper hitch positioning.
No. During step 9, loosely secure the vehicle hardware after installing the hitch and reinstalling the bumper beam. Do not fully tighten fasteners until step 10, when you torque all M10 hardware to 45 ft-lbs.
Reinstall all removed components in reverse order of removal: rear fascia, trunk contents, taillight nuts and electrical harness, trunk liner and plastic nuts, trunk liner guard and bolts, wheel well cover and screw, wheel well screws, and rear fascia screws. All hardware should be set aside during removal for reinstallation.
All M10 hardware must be torqued to 45 ft-lbs.
The manual only specifies torque for M10 hardware (45 ft-lbs). Torque values for other fasteners such as the T-25 screws, 8mm, 10mm, and 15mm socket fasteners are not provided in this manual. Contact CURT technical support at 877-287-8634 for additional torque specifications.
Yes. During step 6, unclip the electrical harness from the taillights. During step 7, unclip the electrical harness from the rear fascia. Both harnesses are set aside during removal and reconnected during reinstallation.
A plastic push pin is a fastener on the trunk wall. During step 6, gently unclip 1 plastic push pin on each side of the trunk wall to expose the taillight nuts. These are set aside for reinstallation.
The trunk liner guard is a component inside the trunk along the trunk liner. To remove it, locate and remove 2 capped nuts using a crescent wrench and 2 bolts using a 10mm socket. Gently unclip the trunk liner guard and set it aside for reinstallation.
Safety glasses must be worn at all times while installing this product. If you are hesitant to undertake this task on your own, contact an authorized CURT installer for additional assistance.
Never exceed your vehicle manufacturer's recommended towing capacity. CURT 13305 is rated for a maximum of 5,000 lbs trailer weight and 500 lbs tongue weight, but your vehicle's manufacturer may specify a lower limit. Always follow the more restrictive limit.
Periodically check the receiver hitch to ensure all fasteners are tight and all structural components are sound. This ongoing maintenance is critical to safe operation.
The manual states to periodically check the receiver hitch to ensure all fasteners are tight and all structural components are sound, but does not specify an exact interval. Establish a regular maintenance schedule, such as before each towing trip or monthly if the hitch is in regular use.
The manual does not specify a retorque interval. Contact CURT technical support at 877-287-8634 or visit www.curtmfg.com for guidance on retorque schedules.
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 incidental or consequential loss or damage.
Yes. This product complies with safety specifications and requirements for connecting devices and towing systems of the state of New York, V.E.S.C. Regulation V-5 and SAE J684.
Call CURT technical support at 877-287-8634. You can also visit www.curtmfg.com for more information or www.hitchinfo.com for helpful towing tips. If you are hesitant to undertake installation on your own, contact an authorized CURT installer for additional assistance.
Yes, the Curt 56285 is designed for the Volvo S90. It is also compatible with the Volvo XC90. The harness is designed for SUVs, mini and full-sized vans (S-series applications).
Yes, the Curt 56285 is designed for the Volvo XC90. It is also compatible with the Volvo S90. The harness is designed for SUVs, mini and full-sized vans (S-series applications).
The signal circuits are rated at 3.0 amps per side. The tail and running circuits are rated at 6.0 amps total. Do not exceed these ratings or the tow vehicle lamp load rating, whichever is lower, as exceeding the product rating can cause loss of warranty, overheating and potential fire.
The tail and running circuits are rated at 6.0 amps total. The signal circuits are rated at 3.0 amps per side. Do not exceed these ratings or the tow vehicle lamp load rating, whichever is lower, as exceeding the product rating can cause loss of warranty, overheating and potential fire.
You will need a ratchet, 10mm socket, 8mm socket, panel trim removal tool, and a cutting tool. A 3/32" drill bit is also required if you need to drill a pilot hole for the ground screw.
Yes, you must disconnect the negative battery terminal before beginning installation. This is a required safety step performed in Step 2 of the installation process.
You must remove: all trunk floor coverings, the driver side access panel (to reach the battery), the rear scuff panel, the storage tray from the passenger side, and the fasteners securing the cargo tie down. The side trim panels must also be pulled back to access the taillight wiring harness connectors.
The custom wiring harness end with the yellow wire is inserted between the separated taillight wiring harness connectors on the driver side, behind the side trim panel. The connectors must be fully inserted with locking tabs in place.
The custom wiring harness end with the green wire is routed to the passenger side behind the removed scuff panels and inserted between the separated taillight wiring harness connectors on the passenger side, following the same procedure as the driver side (yellow wire). The connectors must be fully inserted with locking tabs in place.
Locate a suitable grounding point near the taillight connector, such as an existing screw with nut in the vehicle frame. If no suitable point exists, drill a 3/32" pilot hole. The area must be free of rust, dirt and paint. Secure the white ground wire using the ring terminal and provided screw. Repeat this process on the passenger side.
Drilling may be required. If a suitable existing grounding point (such as a screw with nut in the vehicle frame) is not available near the taillight connector, you must drill a 3/32" pilot hole for the provided ground screw. Before drilling, check for hidden items behind or under any surface to avoid damage and personal injury.
Drill a 3/32" pilot hole for the provided ground screw. The area should be free of rust, dirt and paint. Before drilling, check for hidden items behind or under any surface to avoid damage and personal injury.
The black converter box should be adhered to a flat spot inside the vehicle near the taillight using the provided double-sided tape. This is typically located in the trunk area.
Route the power wire to the battery's positive (+) terminal. Using a 10mm socket, remove the nut on the positive (+) terminal auxiliary stud. Attach the power wire terminal ring and reinstall the nut. The battery connection must be fuse-protected with a 10-amp max fuse.
The battery connection must be fuse-protected with a 10-amp maximum fuse. Exceeding this rating can cause loss of warranty, overheating and potential fire.
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.
After installation, test for proper function by using a test light or connecting a properly wired trailer. All installation steps must be followed to ensure the wiring harness functions properly. Reconnect the negative battery terminal and reinstall all items removed during installation.
The Curt 56285 includes the custom wiring harness with yellow and green wire ends, a white ground wire with ring terminal, a provided ground screw, a black converter box, double-sided tape for mounting the converter box, a 4-flat dust cover, and cable ties for securing loose wires.
The battery connection must be fuse-protected with a 10-amp maximum fuse. Exceeding this rating can cause loss of warranty, overheating and potential fire. Do not exceed the product rating or tow vehicle lamp load rating, whichever is lower.
Exceeding the product rating can cause loss of warranty, overheating and potential fire. Do not exceed the signal circuit rating (3.0 amps per side), tail/running circuit rating (6.0 amps total), or the tow vehicle lamp load rating, whichever is lower.
Yes, you should check your vehicle owner's manual or contact the vehicle manufacturer for more information about your specific vehicle's electrical system and lamp load rating before installation.
Yes, the Curt 56285 is designed for both Volvo S90 and XC90 models.
You need a ratchet, 10mm socket, 8mm socket, panel trim removal tool, and cutting tool. A 3/32" drill bit is needed if drilling a ground hole.
Yes, you must disconnect the negative battery terminal before starting installation.
Drilling may be required if no suitable existing ground point is available. You would drill a 3/32" pilot hole for the provided ground screw.
The battery connection must use a 10-amp maximum fuse. Do not exceed this rating.
Signal circuits: 3.0 amps per side. Tail/running circuits: 6.0 amps total. Do not exceed these ratings or the vehicle's lamp load rating.
Test for proper function using a test light or by connecting a properly wired trailer.
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