---
product_id: 486810047
title: "Trailer Tongue Coupler Lock, Trailer Hitch Lock,Dia 1/4 Inch, 3/4 Inch Span for Tow Boat RV Truck Car's Coupler, Black"
brand: "retrue"
price: "526306₫"
currency: VND
in_stock: true
reviews_count: 13
category: "Retrue"
url: https://www.desertcart.vn/products/486810047-trailer-tongue-coupler-lock-trailer-hitch-lock-dia-1-4
store_origin: VN
region: Vietnam
---

# 1/4-inch diameter pin for universal fit Simple 1/4-turn lock activation High-strength zinc alloy resists corrosion Trailer Tongue Coupler Lock, Trailer Hitch Lock,Dia 1/4 Inch, 3/4 Inch Span for Tow Boat RV Truck Car's Coupler, Black

**Brand:** retrue
**Price:** 526306₫
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock it down, level up your trailer security game!

## Quick Answers

- **What is this?** Trailer Tongue Coupler Lock, Trailer Hitch Lock,Dia 1/4 Inch, 3/4 Inch Span for Tow Boat RV Truck Car's Coupler, Black by retrue
- **How much does it cost?** 526306₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/486810047-trailer-tongue-coupler-lock-trailer-hitch-lock-dia-1-4)

## Best For

- retrue enthusiasts

## Why This Product

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

## Key Features

- • **Double the Convenience:** Includes 2 keys so you’re never locked out, plus responsive 24/7 customer support for peace of mind.
- • **Heavy-Duty Theft Deterrent:** Robust padlock-style design crafted from high-strength steel sends a clear message to thieves—hands off.
- • **Effortless Locking Mechanism:** Spin the flat key 5-7 times for quick, hassle-free locking and unlocking—security made simple.
- • **Universal Fit, Zero Guesswork:** Fits latch-type couplers up to 3/4-inch span for seamless compatibility across trailers, boats, RVs, and trucks.
- • **Built to Withstand the Elements:** Weather-resistant black zinc alloy finish and corrosion-proof pin ensure long-lasting security in any climate.

## Overview

The RETRUE Trailer Tongue Coupler Lock offers universal compatibility with a 1/4-inch diameter pin and 3/4-inch span fit, crafted from high-strength zinc alloy with corrosion-resistant plating. Its weatherproof, padlock-style design provides robust theft protection, while the simple 1/4-turn locking mechanism and included dual keys ensure effortless, reliable security for your trailer, boat, RV, or truck.

## Description

Product description RETRUE TRAILER LOCKS YOU MAY LIKE Coupler Latch Lock Trailer Cyberlock Heavy Duty Coupler Lock Coupler Lock Trailer Lock Kit

Review: Simple, Secure & Does the Job - This coupler lock is exactly what I needed for peace of mind. It’s sturdy, easy to use, and fits securely without any hassle. The build quality feels solid - not flimsy - and it locks/unlocks smoothly. I also like that it’s compact but still does a great job keeping my gate secured. Overall, a reliable and affordable option if you want a quick, no-fuss way to protect your gate (I don’t use it for a trailer).
Review: Great product @ great price. - Great product for great price, seemed very sturdy and strong made of good steel.

## Features

- Universal Fit Coupler Lock. With a 1/4-inch diameter pin and has a padlock-style design, this trailer coupler lock fits latch-type couplers with a maximum span of up to 3/4 inches
- Reliable Strength. This trailer pin lock is made of high-strength zinc alloy and protected from the elements with its black painted finish, while the coupler pin is shielded against corrosion with a durable zinc plating, enhance the the life of coupler lock and the security
- Highly Security. To help protect your trailer away from theft, this trailer lock is made from high-strength steel and has a padlock-style design
- Easy to use. This padlock-style trailer tongue lock has a heavy-duty look to deter theft. Uses a simple 1/4-turn lock activation for convenient locking and unlocking, Simply spin the flat key 5-7 times to open or close our hitch locking pin
- 2 Keys Included for Your Convenience. 2 keys comes in the package. If you encounter any problems, please feel free to contact us through the "Ask a Question" button. We are always happy to help and are committed to providing a responsive solution 24/7

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B286C48R |
| Additional Features | Weather Resistant |
| Best Sellers Rank | #994 in Automotive ( See Top 100 in Automotive ) #4 in Towing Hitch Locks |
| Brand | RETRUE |
| Brand Name | RETRUE |
| Color | Black |
| Control Method | Touch |
| Customer Reviews | 4.6 out of 5 stars 2,100 Reviews |
| Included Components | 1 X Trailer Tongue Coupler Lock, 2 x Keys |
| Item Dimensions | 1.96 x 1.1 x 1.96 inches |
| Item Type Name | Trailer Coupler Lock |
| Item Weight | 0.36 Pounds |
| Item dimensions L x W x H | 1.96 x 1.1 x 1.96 inches |
| Lock Type | Cylindrical |
| Manufacturer | RETRUE |
| Manufacturer Part Number | RTL200B |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Model Name | Trailer Tongue Coupler Lock |
| Model Number | RTL200 |
| Recommended Uses For Product | Securing trailers to vehicles (Trailer towing and parking) |
| Smart Home Compatibility | Not Smart Home Compatible |
| Special Feature | Weather Resistant |
| Style Name | Trailer Tongue Coupler Lock |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** RETRUE
- **Special Feature:** Weather Resistant
- **Lock Type:** Cylindrical
- **Item dimensions L x W x H:** 1.96 x 1.1 x 1.96 inches
- **Material:** Alloy Steel

## Images

![Trailer Tongue Coupler Lock, Trailer Hitch Lock,Dia 1/4 Inch, 3/4 Inch Span for Tow Boat RV Truck Car's Coupler, Black - Image 1](https://m.media-amazon.com/images/I/71w7aMoFTUL.jpg)
![Trailer Tongue Coupler Lock, Trailer Hitch Lock,Dia 1/4 Inch, 3/4 Inch Span for Tow Boat RV Truck Car's Coupler, Black - Image 2](https://m.media-amazon.com/images/I/71VGXjo5lPL.jpg)
![Trailer Tongue Coupler Lock, Trailer Hitch Lock,Dia 1/4 Inch, 3/4 Inch Span for Tow Boat RV Truck Car's Coupler, Black - Image 3](https://m.media-amazon.com/images/I/71sQJ0vxdzL.jpg)
![Trailer Tongue Coupler Lock, Trailer Hitch Lock,Dia 1/4 Inch, 3/4 Inch Span for Tow Boat RV Truck Car's Coupler, Black - Image 4](https://m.media-amazon.com/images/I/71zAdpriwFL.jpg)
![Trailer Tongue Coupler Lock, Trailer Hitch Lock,Dia 1/4 Inch, 3/4 Inch Span for Tow Boat RV Truck Car's Coupler, Black - Image 5](https://m.media-amazon.com/images/I/71qtioRyC9L.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Simple, Secure & Does the Job
*by M***I on April 6, 2026*

This coupler lock is exactly what I needed for peace of mind. It’s sturdy, easy to use, and fits securely without any hassle. The build quality feels solid - not flimsy - and it locks/unlocks smoothly. I also like that it’s compact but still does a great job keeping my gate secured. Overall, a reliable and affordable option if you want a quick, no-fuss way to protect your gate (I don’t use it for a trailer).

### ⭐⭐⭐⭐⭐ Great product @ great price.
*by N***. on April 26, 2026*

Great product for great price, seemed very sturdy and strong made of good steel.

### ⭐⭐⭐⭐ Better Than My Old Lock?
*by T***6 on December 29, 2025*

I would say that this is and upgrade to my old padlock that was rusted so badly it would hardly open. It has an exposed extended shackle that could be sawed off. Secures tongue coupler. Not sure how it would hold up to a hard hammering being that's the body is made out of Zink. Keys work smoothly.

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**Shop now:** [https://www.desertcart.vn/products/486810047-trailer-tongue-coupler-lock-trailer-hitch-lock-dia-1-4](https://www.desertcart.vn/products/486810047-trailer-tongue-coupler-lock-trailer-hitch-lock-dia-1-4)

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-05-16*