---
product_id: 401461794
title: "Master Lock Master Lock - Universal Size Fits 1-7/8inch 2inch and 2-5/16inch Couplers - Trailer Locks #389DAT"
brand: "master lock"
price: "Rp3789944"
currency: IDR
in_stock: false
reviews_count: 5
category: "Master Lock"
url: https://www.desertcart.id/products/401461794-master-lock-master-lock-universal-size-fits-1-7-8inch
store_origin: ID
region: Indonesia
---

# Advanced pick & pry resistant lock Universal fit for 1-7/8" to 2-5/16" couplers Rust & corrosion resistant brass build Master Lock Master Lock - Universal Size Fits 1-7/8inch 2inch and 2-5/16inch Couplers - Trailer Locks #389DAT

**Brand:** master lock
**Price:** Rp3789944
**Availability:** ❌ Out of Stock

## Summary

> 🔐 Lock it down, stand out in red – protect your trailer like a pro!

## Quick Answers

- **What is this?** Master Lock Master Lock - Universal Size Fits 1-7/8inch 2inch and 2-5/16inch Couplers - Trailer Locks #389DAT by master lock
- **How much does it cost?** Rp3789944 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/401461794-master-lock-master-lock-universal-size-fits-1-7-8inch)

## Best For

- master lock enthusiasts

## Why This Product

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

## Key Features

- • **Unmatched Security:** Advanced locking mechanism deters thieves with ease
- • **Trusted by Thousands:** 4.7-star rating from over 15,900 users proves reliability
- • **Perfect Universal Fit:** Fits all standard trailer couplers from 1-7/8" to 2-5/16"
- • **Durable & Weatherproof:** Rust-resistant brass and bright red finish for long-lasting protection
- • **Effortless Installation:** Simple, quick setup and removal saves you time

## Overview

The Master Lock #389DAT is a universal trailer coupler lock designed to fit 1-7/8", 2", and 2-5/16" couplers. Featuring a robust brass construction with a bright red finish, it resists rust, corrosion, picking, and prying. Easy to install and remove, this lock is trusted by over 15,900 users with a 4.7-star rating, making it a top choice for securing trailers with confidence.

## Description

......

Review: يمنع من السرقة من بعد الله - صراحه جداً ممتاز و ثقيل مره كويس و تركيبه اسهل منه مافي ، خامته جداً قوية وما استغربت لمن شفت تقاييم المنتج و عدد المشترين له فعلاً يستاهل .
Review: Good and Safe

## Features

- Coupler Lock,Universal
- Bright red finish discourages thief's from messing with your trailer
- Advanced locking mechanism resists picking and prying
- Resists rust and corrosion; Simple installation and removal

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01MYCT0LG |
| Additional Features | Advanced locking mechanism, Resists picking and prying, Rekeyable |
| Brand | Master Lock |
| Brand Name | Master Lock |
| Colour | Red |
| Control Method | Touch |
| Controller Type | Key Control |
| Customer Reviews | 4.7 out of 5 stars 15,930 Reviews |
| Global Trade Identification Number | 00071649263019 |
| Included Components | Key |
| Item Dimensions | 9.1 x 19.3 x 17 Centimeters |
| Item Type Name | Automotive Towing |
| Item Weight | 454 g |
| Item dimensions L x W x H | 9.1 x 19.3 x 17 Centimeters |
| Lock Type | Key Lock |
| Manufacturer | Master Lock |
| Material | Brass |
| Material Type | Brass |
| Model Number | 379ATPY |
| Product Finish Type | Painted |
| Recommended Uses For Product | securing trailers |
| Shape | Rectangular |
| Special Feature | Advanced locking mechanism, Resists picking and prying, Rekeyable |
| Style Name | Modern |
| UPC | 071649263019 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Master Lock
- **Item dimensions L x W x H:** 3.6 x 7.6 x 6.7 inches
- **Lock Type:** Key Lock
- **Material:** Brass
- **Special Feature:** Advanced locking mechanism, Resists picking and prying, Rekeyable

## Images

![Master Lock Master Lock - Universal Size Fits 1-7/8inch 2inch and 2-5/16inch Couplers - Trailer Locks #389DAT - Image 1](https://m.media-amazon.com/images/I/51j0ElX2eTL.jpg)
![Master Lock Master Lock - Universal Size Fits 1-7/8inch 2inch and 2-5/16inch Couplers - Trailer Locks #389DAT - Image 2](https://m.media-amazon.com/images/I/61ZBFNGmumL.jpg)
![Master Lock Master Lock - Universal Size Fits 1-7/8inch 2inch and 2-5/16inch Couplers - Trailer Locks #389DAT - Image 3](https://m.media-amazon.com/images/I/71nmXREL0DL.jpg)

## Questions & Answers

**Q: Which is better, this or a boot for a trailer?**
A: This is pretty good, fits any receiver and is sturdy.  I also have a boot, one that clamps on each side of the wheel, so much easier to use than the so called Denver Boot.  If someone wants your trailer bad enough locks and boots won't make any difference, but it sure will slow them down.

**Q: Are the keys universal or unique to each lock?**
A: The keys are unique to the lock. I ordered the 4 pack. The keys for one lock only works on that lock.

**Q: How many keys does this come with?**
A: That would be two

**Q: Will this lock work on a gooseneck trailer 2 5/16  hitch receiver?**
A: Yes, it works on mine, and the description of it states the sizes it will fit.

## Customer Reviews

### ⭐⭐⭐⭐⭐ يمنع من السرقة من بعد الله
*by A***A on 5 February 2026*

صراحه جداً ممتاز و ثقيل مره كويس و تركيبه اسهل منه مافي ، خامته جداً قوية وما استغربت لمن شفت تقاييم المنتج و عدد المشترين له فعلاً يستاهل .

### ⭐⭐⭐⭐⭐ Good and Safe
*by S***E on 21 October 2025*



### ⭐⭐⭐⭐⭐ Excelente candado para remolque
*by R***E on 27 September 2025*



## Frequently Bought Together

- Master Lock - Universal Size Fits 1-7/8", 2", and 2-5/16" Couplers - Trailer Locks #389DAT
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*Product available on Desertcart Indonesia*
*Store origin: ID*
*Last updated: 2026-02-25*