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Pollak Trailer Wiring Adapter - 7-Way RV to 4-Way Flat
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Pollak

Pollak Trailer Wiring Adapter - 7-Way RV to 4-Way Flat

Part Number: PK66AV
In Stock
$32.26
Retail:$37.87
You Save: 15%
Trailer Wiring
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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
Connect your trailer with a 4-way flat plug to a vehicle with a 7-way RV socket using this simple plug-in adapter. Great Prices for the best trailer wiring from Pollak. Pollak Trailer Wiring Adapter - 7-Way RV to 4-Way Flat part number PK66AV can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (15)
  • Q & A (0)
  • Videos (1)
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Pollak Trailer Wiring - PK66AV

  • Wiring Adapters
  • Plug Only
  • 7 Blade to 4 Flat
  • Pollak

Connect your trailer with a 4-way flat plug to a vehicle with a 7-way RV socket using this simple plug-in adapter.


Highlights

  • 7-Way RV to 4-Way Flat: Adapts a vehicle-side 7-way RV socket to work with a trailer-side 4-way flat plug.
  • Flexible Wire Lead: Adds reach and reduces strain at connection point.
  • Positive Latch Design: Helps keep the plug securely connected.
  • Nylon Shell Construction: Non-corrosive housing resists environmental exposure.
  • No Rewiring Required: Quick plug-in solution for mismatched connector types.

Specs

Connector:

  • Vehicle Side: 7-way RV blade
  • Trailer Side: 4-way flat

Construction:

  • Housing Material: Nylon
  • Corrosion Resistance: Yes

Overall length:

  • 8" Long

Weight:

  • 0.50 lb


7WB-143V Pollak Trailer Wiring Adapter - 7-Way RV to 4-Way Flat





Video of Pollak Trailer Wiring Adapter - 7-Way RV to 4-Way Flat
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of Pollak Trailer Wiring - 7 Way RV To 4 Way Flat Trailer Wiring Adapter - PK66AV

Hi, everybody, Andy here with etrailer. Let's take a quick look at this Pollak 7-Way RV-To-4-Way Flat Trailer Wiring Adapter. So, this adapter is a simple fix if your vehicle and trailer don't have the matching connectors. So, if your vehicle has a 7-way RV-style socket, but your trailer uses a 4-way flat plug, this is going to let them work together instantly. No rewiring or complicated setup. And this has a short, flexible wire lead, which is actually really helpful because it gives you a bit of extra reach, and it takes the stress off of the connection points, so you're not forcing anything or risking damage.

The plug itself has a positive lap, so once it's connected, it's going to stay put instead of wiggling loose when you're driving. And the outer shell is made of durable nylon, so it's not gonna corrode or break down from weather exposure over time. Just in case you we inchesre wondering, let me see if I can make this as straight as possible. The overall length from end to end, just a rough measurement here, pretty close to eight inches, I think you can see that. But it's gonna be a really simple fix if this is something that you're looking for a solution for.

I think it's gonna wrap up our quick look today. I do hope that it was helpful for you. Again, my name's Andy, thank you for joining me.

Ratings & Reviews

5.0

15 reviews
5 Stars
(15)
4 Stars
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by:
This worked perfectly. This fit our RV and connected to the StowAway Hitch Cargo Box. Very easy to install.
by:
Works perfectly with our 2024 Kia EV9 hitch and Thule Epos Bike rack! Thanks for providing a great product.
by:
Adapter worked perfect and now used instead of my Curt 7-4 pin flat readily available from retailers. This Pollak model was perfect for my 2024 Chevrolet Silverado 1500RST
by:
This adapter works great. Converted my 4pin with no issues. Saved a lot of money in having my cargo trailer rewired.
by:
excellent communication from these folks and the adapter fits and works perfectly
by:
Came quickly and was exactly what I neede.
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Works great with my Audi Q7, no errors on the dash or any issues at all
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See what our Experts say about this Pollak Trailer Wiring

  • Will 7 Way To 4 Way Flat Adapter Work In 2026 Sprinter 3500?
    Hey Doug! Yes, as long as your Sprinter already has the 7 way plug on the back, then this Pollak Trailer Wiring Adapter - 7-Way RV to 4-Way Flat # PK66AV will fit right into it and adapt it to a 4 way. Then you can just unplug it when you need to tow a different trailer that has a 7 way. The 7 way outlets on the back of vehicles are industry standard, so it doesn't matter if you have factory tow package 7 way or an aftermarket one. What are you trying to tow with it?
    view full answer...
  • Will Pollak 7-way to 4-way adapter part # PK66AV Fit 2022 Audi SQ5 7-Way
    Hey Robert, yes the Pollak 7-way to 4-way adapter part # PK66AV that you referenced will fit and work great installed in the 7-way of your 2022 AUdi SQ5. What are you using the Curt aux light for?
    view full answer...
  • Will Pollak Trailer Wiring Adapter Work With 7-Way On 2026 Jeep Wrangler
    Hey Bill! Yes, the Pollak Trailer Wiring Adapter # PK66AV will work with the 7-way on your 2026 Wrangler. This will provide you with the 4-way connection you need to power the lights when you're towing one of your trailers without brakes. It has a positive latch design to keep it held in place and will give you an 8" extension as well. What kind of trailers are you typically towing?
    view full answer...

Do you have a question about this Trailer Wiring?


Info for this part was:

Employee William V
Edited by:
William V
Employee Jameson C
Expert Research:
Jameson C
Employee Wilson B
Updated by:
Wilson B
Employee Andy C
Installed by:
Andy C
Employee Kim H
Written by:
Kim H

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