---
product_id: 291801667
title: "Oyviny 7 Pin Round to 4 and 5 Pin Flat Blade Trailer Adapter, 7 Way to 5 Way Trailer Plug Adapter 2-in-1 Design"
brand: "oyviny"
price: "€ 19.05"
currency: EUR
in_stock: true
reviews_count: 13
category: "Oyviny"
url: https://www.desertcart.nl/products/291801667-oyviny-7-pin-round-to-4-and-5-pin-flat
store_origin: NL
region: Netherlands
---

# Brass terminals for superior conductivity 2-in-1 7-to-4 & 5 pin adapter Waterproof, heavy-duty nylon housing Oyviny 7 Pin Round to 4 and 5 Pin Flat Blade Trailer Adapter, 7 Way to 5 Way Trailer Plug Adapter 2-in-1 Design

**Brand:** oyviny
**Price:** € 19.05
**Availability:** ✅ In Stock

## Summary

> 🚛 Elevate your tow game with the ultimate 2-in-1 trailer adapter!

## Quick Answers

- **What is this?** Oyviny 7 Pin Round to 4 and 5 Pin Flat Blade Trailer Adapter, 7 Way to 5 Way Trailer Plug Adapter 2-in-1 Design by oyviny
- **How much does it cost?** € 19.05 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/291801667-oyviny-7-pin-round-to-4-and-5-pin-flat)

## Best For

- oyviny enthusiasts

## Why This Product

- Trusted oyviny brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Tow-Ready:** Perfect for trucks, RVs, boats, and ATVs—expand your towing options effortlessly.
- • **Rugged & Weatherproof:** Durable nylon housing and dust covers protect your connection rain or shine—no more corrosion worries.
- • **Plug & Play Simplicity:** No cutting or splicing needed—just snap in and tow with confidence in seconds.
- • **Secure Fit, Zero Loose Ends:** Precision-engineered to snap firmly into factory 7-way sockets, eliminating flickering lights or connection drops.
- • **Universal 2-in-1 Compatibility:** Seamlessly switch between 4-pin and 5-pin trailer connections with one sleek adapter.

## Overview

The Oyviny 7 to 4 & 5 Pin Trailer Adapter is a universal, heavy-duty nylon 2-in-1 connector that converts a 7-way RV-style plug into 4-pin or 5-pin trailer connections. Featuring waterproof construction, brass terminals for optimal conductivity, and a secure snap-in design, it offers hassle-free installation and reliable performance across trucks, RVs, boats, and ATVs.

## Description

Buy Oyviny 7 to 4 & 5 Pin Trailer Adapter, 2-in-1 Design: Connectors - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: great trailer adapter replacement - After removing boat from lake, I plugged my trailer back into the truck. Few minutes later lights went out. Fuses were good, wireing seemed to be ok but no lights. Bought this adapter because it has 4 & 5 connection points. Plugged it in and all the lights work. Old adapter apparently shorted inside. This is a great choice to plug in 4 & 5 different types of trailer lights.
Review: Fits perfect in factory harness and no issues - This adapter has been wiring great with my 2021 GMC Acadia AT4's factory 7-blade harness. I have two trailers that I tow but they are both 4 pin. For the extra $1 to get the 5-pin it was worth it. I do chew a trailer to tow eventually with a 5-pin so we will find out how it works there.

## Features

- 7 Pin to 4 and 5 Pin Trailer Adapter: Oyviny trailer plug adapter adopts the 2 in 1 design, converts a 7 way RV-style connector to a standard 4-pin or 5-pin flat trailer connector, suitable for Chevrolet, Ford, Dodge, RAM, Toyota or GMC, Boat, Trailer, RV, ATV etc.
- 7 Pin to 5 Pin Trailer Adapter: Tight-fitted 7 way to 5 way towing adapter features standard round 7-way flat blade connector, easily snaps into trailer's existing socket and holds securely, NO LOOSE FITTING
- Durable Construction: Heavy duty nylon housing is waterproof and temperature resistant, Brass terminals provide superior conductivity; With 2 dust covers at the plug, it keeps terminals clean and protected when not in use towing a trailer
- Easy Installation: Simple Plug & Play design eliminates the need for cutting or splicing, hassle free setup, easy to install and remove; 7 pin to 4 pin trailer adapter features two handles on either side of the plug for a better grip when plugging in or unplugging trailer wiring
- Wide Application: 7 pin round to 4 pin flat trailer plug adapter works great with any factory OEM 7-way plug, you could choose to tow 4 way or 5 way trailer with one adapter, adding versatile towing options for your vehicle

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08MDW63DH |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #934 in Automotive ( See Top 100 in Automotive ) #1 in Trailer Connectors |
| Brand | Oyviny |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,948) |
| Date First Available | November 2, 2020 |
| Finish Type | Polished |
| Item Weight | 5.3 ounces |
| Item model number | S70-45-001 |
| Manufacturer | Oyviny |
| Manufacturer Part Number | S70-45-001 |
| Material | Nylon |
| Product Dimensions | 3.94 x 3.94 x 3.94 inches |
| UPC | 769894715529 |
| Vehicle Service Type | ATV, Car, Marine-Personal-Craft, Tractor, Trailer |

## Product Details

- **Automotive Fit Type:** Universal Fit
- **Brand:** Oyviny
- **Finish Type:** Polished
- **Material:** Nylon
- **Vehicle Service Type:** ATV, Car, Marine-Personal-Craft, Tractor, Trailer

## Images

![Oyviny 7 Pin Round to 4 and 5 Pin Flat Blade Trailer Adapter, 7 Way to 5 Way Trailer Plug Adapter 2-in-1 Design - Image 1](https://m.media-amazon.com/images/I/81BR1im6M4L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ great trailer adapter replacement
*by R***T on October 8, 2025*

After removing boat from lake, I plugged my trailer back into the truck. Few minutes later lights went out. Fuses were good, wireing seemed to be ok but no lights. Bought this adapter because it has 4 & 5 connection points. Plugged it in and all the lights work. Old adapter apparently shorted inside. This is a great choice to plug in 4 & 5 different types of trailer lights.

### ⭐⭐⭐⭐⭐ Fits perfect in factory harness and no issues
*by J***E on December 1, 2025*

This adapter has been wiring great with my 2021 GMC Acadia AT4's factory 7-blade harness. I have two trailers that I tow but they are both 4 pin. For the extra $1 to get the 5-pin it was worth it. I do chew a trailer to tow eventually with a 5-pin so we will find out how it works there.

### ⭐⭐⭐⭐⭐ Works great
*by R***D on November 22, 2025*

Great value, good quality and works perfectly.

## Frequently Bought Together

- Oyviny 7 to 4 & 5 Pin Trailer Adapter, 2-in-1 Design
- MaxxHaul 80778 Magnetic Towing Light Kit (Dual Sided for RV, Boat, Trailer and More DOT Approved), 1 Pack
- LIMICAR Trailer Wiring Harness Extension Kit, 25ft Trailer Wiring Harness with 4 Flat Extension Connector, 4 Pin Flat Wishbond Trailer Harness for Utility Boat Trailer Lights Kits

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-13*