---
product_id: 97993046
title: "PowerTrax 1821-LR Lock Right Locker for Ford 8.8\" 31 Spline, 3/4\" Shaft, Compatible with 1983-2014 Ford Models"
price: "€ 847.54"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.cy/products/97993046-powertrax-1821-lr-lock-right-locker-for-ford-8-8
store_origin: CY
region: Cyprus
---

# 31 spline precision fit Fits 1983-2014 Ford models 3/4" shaft compatibility PowerTrax 1821-LR Lock Right Locker for Ford 8.8" 31 Spline, 3/4" Shaft, Compatible with 1983-2014 Ford Models

**Price:** € 847.54
**Availability:** ✅ In Stock

## Summary

> 🚀 Unlock your Ford’s full potential—traction that never quits!

## Quick Answers

- **What is this?** PowerTrax 1821-LR Lock Right Locker for Ford 8.8" 31 Spline, 3/4" Shaft, Compatible with 1983-2014 Ford Models
- **How much does it cost?** € 847.54 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/97993046-powertrax-1821-lr-lock-right-locker-for-ford-8-8)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Rugged, machined construction designed to dominate tough off-road conditions
- • **Lock in Control:** Automatic locking differential for superior traction when you need it most
- • **Perfect Ford Fit:** Specifically engineered for Ford 8.8" 31 spline differentials—drop-in ease, zero hassle
- • **Wide Model Coverage:** Compatible with iconic Ford Broncos, F-series trucks, and Mustangs from '83 to '14
- • **Confidence Guaranteed:** Backed by a 2-year/100,000-mile warranty for peace of mind on every adventure

## Overview

The PowerTrax 1821-LR Lock Right Locker is a high-performance automatic locking differential designed for Ford 8.8" 31 spline axles with a 3/4" shaft. Compatible with Ford models from 1983 to 2014, including Broncos, F-150s, F-250s, and Mustangs, it delivers enhanced traction and stability for off-road and challenging driving conditions. Built with durable machined materials and backed by a 2-year/100,000-mile warranty, it’s a reliable upgrade that transforms your vehicle’s drivetrain performance.

## Description

PowerTrax LOCK-RIGHT Differential Lock Assembly for Ford 8.8" PowerTrax LOCK-RIGHT Differential Lock Assembly for Ford 8.8" Brand: PowerTraxSpecifications:Differential Model: Ford 8.8Ring Gear Bolt Quantity: 10Spline Quantity: 31Type: OpenKit Includes:For Ford 8.8" (10 Bolt); 31 SplineFor Open Differential3/4" ShaftWarranty:Warranty Period: 2 Years or 100,000 MilesReplaces:Eaton: 187C145AEaton: 19588-1Eaton: 19660-1Auburn Gear: 542025Eaton: 913A561PowerTrax: 9206883107PowerTrax: 9206883127PowerTrax: GT108831PowerTrax: LS108831American Axle & Manufacturing: M4204F318Applications:1983-1986 Ford Bronco1983-1983 Ford E-100 Econoline1983-1983 Ford E-100 Econoline Club Wagon1983-1986 Ford E-150 Econoline1983-1986 Ford E-150 Econoline Club Wagon1983-1986 Ford E-250 Econoline1983-1986 Ford E-250 Econoline Club Wagon1983-1986 Ford F-1501983-1986 Ford F-2502010-2014 Ford Mustang

Review: Worth it 9.5gm 15 bolt sf - Works perfectly in my gm 9.5in 14 bolt semi float axle for my 93 blazer. Read the instructions i installed it the hard way with the springs and pins installed when putting it into the carrier instead of slipping them in thru the side as it was designed. I got it for 367$ which beats summits price by about 300$ engages smoothly under load when I want it to but it is rough on the locking and unlocking when idling in gear thru parking lots but I think its only because its a manual. Seems pretty stout and fit with the original thrust washer shims that it came with and the cross pin fit better then the original. We'll worth the money. I might even consider one for my c1500 with the same axle for a street truck as the street manners is better than expected unless you're hot rodding it thru the turns then it'll chirp the inner tire or break both tires lose
Review: Works fantastic - Pros -it works great off road and in the snow, totally locks the diff up, easy to install. IMPORTANT axle end play specs, set them right!! Wife drives the vehicle and doesn’t notices it. on road works well also. Cons - install manual sucks, clunky at times, hard on tires. It is easy to install. Unfortunately in the Chrysler 9 1/4 diff I installed this on came with Posi case. And the original part I ordered was the one for the Posi case. I didn’t fit, called tech support to verify I had the right part, they were quick to help. Unfortunately I had to order this locker along with new open case $135 new spider gear set $70 “just for the shims” the backlash adjustment tool $25 bearing set $100, fee to get the bearing pressed on $40, and backlash gauge for $30. I installed this on a 1999 Durango 4wd. The installed required a lot more work also had to weld the abs/speed tone ring to the case because when installing the original ring gear to the new open case. The tone ring had enough clearance to spin free. Time consuming and annoy. But the locker works fantastic. On road it’s mildly noticeable clicking around turns and clunky at times. But overall not a big deal, my wife drives the Durango often and has never complained about it. Video upload was with vehicle in 2wd.

## Features

- High-Performance Lock Right Locker The PowerTrax 1821-LR Lock Right Locker offers enhanced traction and improved off-road performance by locking the differential when needed, providing superior control and stability in challenging conditions.
- Perfect Fit for Ford 8.8" 31 Spline Designed for Ford 8.8" differentials with 31 spline and a 3/4" axle shaft diameter, this locker is a perfect drop-in replacement for open differentials, ensuring an easy and secure fit.
- Enhanced Traction for 1983-2014 Ford Models Compatible with a wide range of Ford vehicles, including the 1983-1986 Ford Bronco, F-150, F-250, and 2010-2014 Ford Mustang, offering improved off-road capabilities and performance for a variety of applications.
- Durable and Reliable Construction Built with high-quality materials for durability, the PowerTrax 1821-LR locker ensures long-lasting performance, capable of handling tough off-road conditions without compromising on reliability.
- 2-Year/100,000-Mile Warranty PowerTrax provides a 2-year or 100,000-mile warranty on the 1821-LR Lock Right Locker, offering peace of mind and confidence in the product's durability and performance over time.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Powertrax |
| Brand | PowerTrax |
| Model | 1821-LR |
| Item Weight | 6 pounds |
| Item model number | 1822-LR |
| Is Discontinued By Manufacturer | No |
| Exterior | Machined |
| Manufacturer Part Number | 1821-LR |
| OEM Part Number | 1821-LR |
| Bulb Type | Led |
| Special Features | Automatic Drop-In Locking Differential |

## Images

![PowerTrax 1821-LR Lock Right Locker for Ford 8.8" 31 Spline, 3/4" Shaft, Compatible with 1983-2014 Ford Models - Image 1](https://m.media-amazon.com/images/I/614WYCuq07L.jpg)
![PowerTrax 1821-LR Lock Right Locker for Ford 8.8" 31 Spline, 3/4" Shaft, Compatible with 1983-2014 Ford Models - Image 2](https://m.media-amazon.com/images/I/61fqJby6ttL.jpg)
![PowerTrax 1821-LR Lock Right Locker for Ford 8.8" 31 Spline, 3/4" Shaft, Compatible with 1983-2014 Ford Models - Image 3](https://m.media-amazon.com/images/I/61jR1IEC+FL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worth it 9.5gm 15 bolt sf
*by T***R on January 3, 2026*

Works perfectly in my gm 9.5in 14 bolt semi float axle for my 93 blazer. Read the instructions i installed it the hard way with the springs and pins installed when putting it into the carrier instead of slipping them in thru the side as it was designed. I got it for 367$ which beats summits price by about 300$ engages smoothly under load when I want it to but it is rough on the locking and unlocking when idling in gear thru parking lots but I think its only because its a manual. Seems pretty stout and fit with the original thrust washer shims that it came with and the cross pin fit better then the original. We'll worth the money. I might even consider one for my c1500 with the same axle for a street truck as the street manners is better than expected unless you're hot rodding it thru the turns then it'll chirp the inner tire or break both tires lose

### ⭐⭐⭐⭐⭐ Works fantastic
*by A***. on March 17, 2023*

Pros -it works great off road and in the snow, totally locks the diff up, easy to install. IMPORTANT axle end play specs, set them right!! Wife drives the vehicle and doesn’t notices it. on road works well also. Cons - install manual sucks, clunky at times, hard on tires. It is easy to install. Unfortunately in the Chrysler 9 1/4 diff I installed this on came with Posi case. And the original part I ordered was the one for the Posi case. I didn’t fit, called tech support to verify I had the right part, they were quick to help. Unfortunately I had to order this locker along with new open case $135 new spider gear set $70 “just for the shims” the backlash adjustment tool $25 bearing set $100, fee to get the bearing pressed on $40, and backlash gauge for $30. I installed this on a 1999 Durango 4wd. The installed required a lot more work also had to weld the abs/speed tone ring to the case because when installing the original ring gear to the new open case. The tone ring had enough clearance to spin free. Time consuming and annoy. But the locker works fantastic. On road it’s mildly noticeable clicking around turns and clunky at times. But overall not a big deal, my wife drives the Durango often and has never complained about it. Video upload was with vehicle in 2wd.

### ⭐⭐⭐⭐⭐ Good for burnouts
*by P***8 on October 17, 2025*

Directions could be clearer, but after some thinking and video watching, once installed, the locker works perfectly! And for anyone looking for a locker to do some burnouts with, this will work!

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---

*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-02-09*