Curt OEM Vehicle To Trailer Connector w/Harness

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  • OEM vehicle to trailer connector and harness
  • 4-way flat output
  • 7-way RV blade socket
  • Dust covers
  • Slit loom
  • Metal connectors
  • Easy plug and play
  • 1-year limited warranty

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Our “free shipping both ways” policy means that returns and orders ship free of charge. When you place an order, you pay only the list price and any applicable taxes. We cover the shipping to save you money and ensure timely delivery.

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In the highly unlikely event of a fitment problem, we’ll return your purchase at no cost to you. We pay return shipping on all orders, so it won’t cost you a penny to send back a defective part.


  • Connects your trailer to your vehicle while providing the necessary power for easy towing
  • 4-way flat output connects tail and brake lights as well as turn signals
  • 7-way RV blade socket connects to electric brakes, reverse lights and aux power
  • Dust covers keeps the connectors clean when not in use
  • Slit loom contains the wiring and keeps it well protected
  • Metal connectors mount the wires to the vehicle and trailer safely and securely
  • Easy to install by simply plugging in with no rewiring or splicing
  • Curt's guarantee of excellent performance, superior quality and safety
OEM vehicle to trailer connector and harness

OEM vehicle to trailer connector and harness

The Curt OEM vehicle-trailer connector and harness connects your truck to the trailer to provide the necessary power for towing.

4-Way Flat Output

4-Way Flat Output

The four-way flat output connects to the truck to provide power for the taillights, turn signals and the turn signals.

7-Way RV Blade Socket

7-Way RV Blade Socket

The 7-way RV blade socket connects the electric brakes, reverse lights and auxiliary power.

Dust Covers

Dust Covers

The Curt OEM vehicle-trailer connector and harness also comes with spring-loaded dust covers that keep the connectors free from dust when not in use.

Wiring Protection

Wiring Protection

The wire harness is covered in slit loom that contains the wiring. It protects it from damage and keeps you safe from accidents such as electrocution.

Safety Metal Connectors

Safety Metal Connectors

The purchase includes metal connectors that help to mount the wires between the trailer and the truck safely.

Easy Plug and Play Installation

Easy Plug and Play Installation

The Curt OEM vehicle-trailer connector and harness is easy to install. You only need to plug it in with no rewiring or splicing.

1-Year Limited Warranty

1-Year Limited Warranty

Curt provides a 1-year warranty for your purchase. This guarantees excellent quality and service without any failure or defects caused by the manufacturer's error. Feel free to contact PartCatalog for assistance with your warranty.

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This product comes with the manufacturer's limited warranty to be free from defect under normal use and service, ordinary wear and tear excepted, for the period of the manufacturer's warranty. Subject to manufacturer limitations.
Part Numbers

The following part numbers are available in this product line:

55664 55774

To purchase this product for your vehicle, please select the Year, Make and Model of your vehicle at the top of this page.

Audi (2017)


Buick (2004-2017)

Enclave, Rainier

Cadillac (2002-2018)

Escalade, Escalade ESV, Escalade EXT, XT5

Chevrolet (2000-2017)

Avalanche, Avalanche 1500, Avalanche 2500, Colorado, Express 1500, Express 2500, Express 3500, Silverado 1500, Silverado 2500 HD, Silverado 3500 HD, Suburban, Suburban 3500 HD, Tahoe, Traverse

Dodge (2017)


Ford (1997-2017)

Expedition, Explorer, F-150, F-250, F-250 Super Duty, F-350 Super Duty, Flex, Ranger, Transit-150, Transit-250, Transit-350, Transit-350 HD

GMC (2002-2018)

Acadia, Acadia Limited, Canyon, Envoy, Envoy XL, Envoy XUV, Savana 1500, Savana 2500, Savana 3500, Sierra 1500, Sierra 2500 HD, Sierra 3500 HD, Terrain, Yukon, Yukon XL

Hummer (2003-2009)

H2, H3, H3T

Infiniti (2004-2017)

QX56, QX60, QX80

Isuzu (2003-2008)


Jeep (2016-2017)

Grand Cherokee

Lincoln (1998-2017)

Aviator, Mark LT, Navigator

Mercury (2002-2010)


Nissan (2004-2017)

Armada, Pathfinder, Titan, Titan XD

Oldsmobile (2002-2004)


Ram (2014-2017)

1500, 2500, 3500, ProMaster 1500, ProMaster 2500, ProMaster 3500

Saab (2005-2006)


Toyota (2007-2017)

4Runner, Sequoia, Tundra