---
product_id: 304342750
title: "Prime-Line S 4140 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – Nickel Finish, ILCO 1003M Keyway, Opens Counter-Clockwise with 90º Rotation"
brand: "prime-line"
price: "Bs.360"
currency: BOB
in_stock: false
reviews_count: 5
category: "Prime Line"
url: https://www.desertcart.bo/products/304342750-prime-line-s-4140-mailbox-lock-replacement-multipurpose-mailbox-lock
store_origin: BO
region: Bolivia
---

# 90º counter-clockwise rotation for smooth operation 5-pin tumbler lock for enhanced security Includes 5 zinc-plated steel cams & brass pins Prime-Line S 4140 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – Nickel Finish, ILCO 1003M Keyway, Opens Counter-Clockwise with 90º Rotation

**Brand:** prime-line
**Price:** Bs.360
**Availability:** ❌ Out of Stock

## Summary

> 🔐 Upgrade your mailbox security with style and ease—never miss a mail moment!

## Quick Answers

- **What is this?** Prime-Line S 4140 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – Nickel Finish, ILCO 1003M Keyway, Opens Counter-Clockwise with 90º Rotation by prime-line
- **How much does it cost?** Bs.360 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/304342750-prime-line-s-4140-mailbox-lock-replacement-multipurpose-mailbox-lock)

## Best For

- prime-line enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Durable diecast body with sleek nickel-plated finish resists wear and weather
- • **Smart Security Lock:** Key cannot be removed when unlocked, preventing accidental mailbox exposure
- • **Effortless Installation:** Quick swap design with smooth 90º counter-clockwise turn—no locksmith needed
- • **Complete Replacement Kit:** Includes 2 keys, 5 cams, brass pins & locking clip for hassle-free installation
- • **Universal Fit for Top Brands:** Seamlessly replaces locks on American Device, Auth-Florence, Bommer & Miami Carey mailboxes

## Overview

The Prime-Line S 4140 is a robust, multipurpose mailbox lock designed for easy replacement across multiple popular mailbox brands. Featuring a secure 5-pin tumbler mechanism, a durable nickel-plated diecast finish, and a unique key-retention feature that prevents leaving the key in the lock, it ensures your mail stays safe. The kit includes all necessary components for a smooth installation, making it the go-to upgrade for professionals seeking reliable, long-lasting mailbox security.

## Description

Easily replace a broken or lost mailbox lock with our multipurpose replacement mailbox lock. Installation is quick and easy and the lock works on a variety of brands, including: American Device, Auth-Florence, Bommer, and Miami Carey. Additionally, this replacement mailbox lock has a security feature that prevents the key from being removed when in the unlocked position, which prevents forgetting the key in the lock, ensuring the mailbox is locked every time it is used. The replacement lock includes a total of 5 zinc plated steel cams, brass pins, a spring steel locking clip and 2 keys. It is made of diecast with a nickel plate finish and a counter-clockwise rotation to open. Be sure to view the manufacturer’s How-To Installation Video also linked on this page.

Review: Works good have had it for a few months now and is still going strong, very smooth operation and easy installation
Review: easy to switch with old lock and adapts to a wide range of boxes .looks like it was never replaced when completed .

## Features

- REPLACEMENT LOCK – The S 4140 multipurpose replacement mailbox lock is an easy fix and can easily replace lost or broken mailbox locks. This is a 5-pin tumbler lock..Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit
- WORKS FOR SEVERAL BRANDS – This replacement mailbox lock works for several brands of mailboxes, including: American Device, Auth-Florence, Bommer, and Miami Carey.
- INCLUDES – Replacement lock kit includes a total of 5 zinc-plated steel cams, brass pins, a spring steel locking clip and 2 keys.
- LOCKING SECURITY FEATURE – This lock has a security feature that prevents the key from being removed when in the unlocked position, which prevents forgetting the key, and ensuring the mailbox is locked every time it’s used.
- DURABLE, STRONG CONSTRUCTION – Made of diecast with a nickel-plated face, this replacement lock is strong and durable, sure to last the test of time..For all dimensional information please refer to the line art and compare to your needs before purchasing

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000B4N0PC |
| ASIN  | B000B4N0PC |
| Batteries Included? | No |
| Batteries Required? | No |
| Color | Nickel |
| Customer Reviews | 4.4 4.4 out of 5 stars (4,052) |
| Customer reviews | 4.4 4.4 out of 5 stars (4,052) |
| Date First Available | 7 August 2012 |
| Date First Available  | 7 August 2012 |
| Finish | Nickel-plated,Nickel |
| Included components | 2 keys, lock and fasteners |
| Is Discontinued By Manufacturer  | No |
| Item Package Quantity | 1 |
| Item Weight | 97.5 g |
| Item model number | S 4140 |
| Item model number  | S 4140 |
| Manufacturer | Prime-Line Products |
| Manufacturer  | Prime-Line Products |
| Material | Diecast / Steel |
| Number Of Pieces | 1 |
| Part number | S 4140 |
| Product Dimensions | 3.18 x 9.69 x 12.38 cm; 97.52 g |
| Product Dimensions  | 3.18 x 9.69 x 12.38 cm; 97.52 g |
| Shape | Round |
| Size | 1 Pack |
| Special Features | Keyless |
| Style | Mailbox Lock |

## Product Details

- **Brand:** PRIME-LINE
- **Item dimensions L x W x H:** 32 x 97 x 124 millimeters
- **Lock type:** Key Lock
- **Material:** Diecast / Steel
- **Special features:** Keyless

## Images

![Prime-Line S 4140 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – Nickel Finish, ILCO 1003M Keyway, Opens Counter-Clockwise with 90º Rotation - Image 1](https://m.media-amazon.com/images/I/61Ivf-HAnlS.jpg)
![Prime-Line S 4140 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – Nickel Finish, ILCO 1003M Keyway, Opens Counter-Clockwise with 90º Rotation - Image 2](https://m.media-amazon.com/images/I/61zAeRPJhzS.jpg)
![Prime-Line S 4140 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – Nickel Finish, ILCO 1003M Keyway, Opens Counter-Clockwise with 90º Rotation - Image 3](https://m.media-amazon.com/images/I/81RnEy9GijL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***. on 8 June 2025*

Works good have had it for a few months now and is still going strong, very smooth operation and easy installation

### ⭐⭐⭐⭐⭐ Review
*by B***E on 6 August 2025*

easy to switch with old lock and adapts to a wide range of boxes .looks like it was never replaced when completed .

### ⭐⭐⭐⭐⭐ Review
*by M***E on 11 October 2025*

For an old mailbox in a condo and was easy to install, mail lady did it for me. Thanks

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*Product available on Desertcart Bolivia*
*Store origin: BO*
*Last updated: 2026-02-21*