---
product_id: 52289981
title: "Spartan Locker for Dana 30 diff, 27 Spline, Includes Heavy-Duty Cross pin Shaft"
brand: "usa standard gear"
price: "VT142121"
currency: VUV
in_stock: true
reviews_count: 5
category: "Usa Standard Gear"
url: https://www.desertcart.vu/products/52289981-spartan-locker-for-dana-30-diff-27-spline-includes-heavy
store_origin: VU
region: Vanuatu
---

# 100% mechanical lockup 27 spline axle fit 9310 alloy steel strength Spartan Locker for Dana 30 diff, 27 Spline, Includes Heavy-Duty Cross pin Shaft

**Brand:** usa standard gear
**Price:** VT142121
**Availability:** ✅ In Stock

## Summary

> 🔧 Unlock unstoppable traction and dominate every trail with Spartan precision!

## Quick Answers

- **What is this?** Spartan Locker for Dana 30 diff, 27 Spline, Includes Heavy-Duty Cross pin Shaft by usa standard gear
- **How much does it cost?** VT142121 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/52289981-spartan-locker-for-dana-30-diff-27-spline-includes-heavy)

## Best For

- usa standard gear enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Installation:** Revolutionary spring and pin design means no special tools—get locked and loaded with just basic hand tools.
- • **Reliable 100% Lockup Traction:** Mechanical locker guarantees full power delivery to both wheels, conquering obstacles others can’t.
- • **Precision Fit for Dana 30 Axles:** Seamlessly replaces stock spiders with a perfect 27 spline fit for Dana Spicer 30 differentials.
- • **Break-In Period for Peak Performance:** Experience initial sensitivity and noise, but after 1000 miles, enjoy smooth, confident control on and off-road.
- • **Unmatched Durability with 9310 Steel:** Crafted from premium 9310 alloy steel, engineered to withstand the toughest off-road challenges.

## Overview

The USA Standard Gear Spartan Locker is a heavy-duty mechanical locker designed for Dana 30 differentials with 27 spline axles. Made from ultra-strong 9310 alloy steel, it replaces the stock spider gears to deliver reliable 100% lockup traction. Its innovative spring and pin design allows easy installation using basic hand tools. While it requires a break-in period of about 1000 miles to smooth out initial noise and sensitivity, it dramatically improves off-road capability by locking both wheels under load, making it a top choice for serious off-road enthusiasts seeking durable, cost-effective traction enhancement.

## Description

Product Description The Spartan Locker, by USA Standard Gear, provides reliable traction at a low cost. The Spartan locker's design does not use the thrust washers and has a revolutionary spring and pin design that makes installation a snap!This automatic locker replaces the stock side and pinion gears while utilizing the factory open differential case. A new and stronger center pin fits in oval slots between two inner drivers. Under load the center pin forces the inner drivers outward to engage the outer axle couplers on each side of the case. This provides locked power to both drive wheels, providing greater traction. When turning, one driver is unloaded and the teeth can ratchet across each other creating differential action to reduce tire wear and make turning the vehicle easier. This is one of the most economical lockers on the market today. Safety Warning WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.

Review: This is a very nice locker. it works very well and installs easily with hand tools and no special tools, knowledge or equipment. (you just need a torque wrench, sockets a punch for the roll pin) Offroad this thing is amazing and will pull your jeep over things that were impossible before. However on-road this is VERY sensitive to tire pressure. Make sure you rotate your tires often and monitor tire pressure frequently. even 1-2 PSI is enough for it to act squirrely. This is especially noticeable for the first 1000 miles. During break in even in 2wd with the locker in in a front differential, It can lock up and make the jeep hard to handle. After it gets worn in - it works like a dream but if you put it in right before winter you will struggle. During break in the unlocks are LOUD -almost like a bang. You will get looks in parking lots where people think you broke something. The steering is much tighter in 4wd then before you put this locker in and it will not turn as tightly in 4wd. Offroad in 4lo with this in the front dana 30 you will have to make more multi point turns (or get a terra 2w low kit for your np231 so you can shift in and out of 2w/4w low on the fly to get the front to unlock) The TJ i put this in didn't work right until i ran it through a couple tanks of gas and flat towed it at 65 for about 650 miles - then it was good to go. In the YJ i put this in it wasn't "right" with the world until just after 1000 miles This does have some negative driving characteristics in 4wd as well. If it's icy you need to be very careful - if you have this in the front axle it will understeer and the locker will not always differentiate because it needs that friction with the road to do so. you will find yourself putting more and more wheel into a turn and then when it finally unlocks it will get squirrely. It will also understeer and is much more likely to loose lateral control in the ice. If you put one of these In the rear it will torque steer (pushing you in a straight line) for as long as you are on the gas. If you don't watch it closely you WILL do unintentional lane changes or donuts when its icy out on the road. Do not just toss the keys to your buddy who doesn't know how to drive an auto locker in in a light vehicle when its shitty out. It will take some time to learn to drive it, you drive allot with your foot - you learn to let off around curves, lane changes etc. Make sure to give yourself some time to adjust to how to drive one of these on the road. Spend some parking lot and back road time with it when its crappy out until you get used to it. When shifting out of 4wd the jeep will have a tendency to not unlock the front axle. If you let it roll with the trans in neutral and turn the wheel back and forth a bit it helps. This gets much much better after you break it it (that first 1000 or so) Finally if you didn't pay attention to the tire size limits - you are much more likely to break axle shafts with larger tires with one of these. Make sure you know out to pound out a u-joint or pull and inner CV . I didn't start breaking things until i went over 33s then it was quite often until i went to 4340 chromoly shafts. The inners are what tend to break on stock shafts and the CV cups blow up on the ZJ shafts. basically take your time, learn to drive it, keep in mind of the limitations and dont judge it until you have that first 1000 or so on it and enjoy the massive off-road advantages
Review: El producto es gran calidad, lo he usado bajo condiciones de alta demanda sin ningún inconveniente, hace que mi camioneta deje 2 marcas de llanta en el pavimento, una belleza.

## Features

- Fits Dana Spicer 30 with 27 spline axles
- Made from 9310 steel for added strength
- Replaces the spiders in a standard carrier case
- Mechanical locker delivers reliable 100% lockup

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007N3P9DA |
| Assembly Instructions Description | No assembly instructions provided |
| Back Material Type | Alloy Steel |
| Base Type | Spline |
| Best Sellers Rank | 927,006 in DIY & Tools ( See Top 100 in DIY & Tools ) 3,572 in Tool Boxes |
| Brand Name | USA Standard Gear |
| Colour | Black |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,949) |
| Door Style | lockup |
| Finish Type | Powder Coated |
| Frame Material Type | Alloy Steel |
| Global Trade Identification Number | 00883584170006 |
| Ground To Item Distance | 0.25 Feet |
| Handle Material | Metal |
| Hardware Color | Black |
| Included Components | Spartan Locker |
| Installation Type | Freestanding |
| Is Assembly Required? | No |
| Is Customizable? | No |
| Item Depth | 4 inches |
| Item Shape | Oval |
| Item Type Name | Spartan Locker |
| Item Weight | 2.11 kg |
| Manufacturer | USA Standard Gear |
| Manufacturer Part Number | SL D30-27 |
| Material Type | Alloy Steel |
| Model Name | Spartan Locker for Dana 30 Differential 27 Spline SL D44-19 |
| Model Number | SL D30-27 |
| Mounting Type | Floor Mount |
| Number of Compartments | 4 |
| Number of Drawers | 4 |
| Number of Levels | 4 |
| Product Care Instructions | Wipe with Dry Cloth |
| Recommended Uses For Product | Automotive |
| Room Type | Home Office |
| Set Name | Spartan Locker |
| Size | Dana 30 differential - 27 spline axles |
| Special Features | Lockable |
| Style Name | Dana 30 Differential 27 Spline Count (SL D30-27) |
| Top Material Type | Steel |
| UPC | 883584170006 883584170433 |
| Unit Count | 1.0 count |
| Weight Capacity Maximum | 60 Kilograms |

## Product Details

- **Brand:** USA Standard Gear
- **Colour:** Black
- **Material:** Alloy Steel
- **Recommended uses for product:** Automotive
- **Special feature:** Lockable

## Images

![Spartan Locker for Dana 30 diff, 27 Spline, Includes Heavy-Duty Cross pin Shaft - Image 1](https://m.media-amazon.com/images/I/71zU0mntDQL.jpg)

## Available Options

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

## Questions & Answers

**Q: Will these fit my 1995 jeep wrangler yj?  should i put them on the front, back, or both?**
A: Yes this will work very well in your front High pinion Dana 30.    

You would need a different locker for the rear Dana 35 in your YJ but i would personally not put an auto locker in it.  You will break the dana35 easily.  

if you really want a locker for the rear - consider swapping the axle for a ford 8.8 or even a  dana 44 out of a waggoneer

**Q: will this work on my 87 xj?**
A: Yes, this locker will work GREAT as long as you have the Dana 44 Rearend.Let me know if you have any other questions.Thanks,BRYDON641-751-8060staticz2229@gmail.com

**Q: Will this fit my 2007 Jeep Unlimited with Dana 44 rear axle with no additional shims or parts?**
A: Yes this should fit in your 44 using the same shims you already have in there.  This will pop considerably on pavement in your rear diff.  I have it in my front and it behaves like an open diff when in 2wd.  It locks up in 4wd and becomes stiffer to steer but climbs rocks much better.  I have the D-30 front.

**Q: Does this locker make noise on tight turns?**
A: Yes, all lunch box type lockers make a clicking noise on turns.  On slow tight turns you may occasionally hear and feel a loud banging.  I have this locker in my front D30 and while turning into a parking space I turn slowly and don't accelerate while doing this type of turning. As others have said, it's normal.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by C***S on 6 January 2022*

This is a very nice locker. it works very well and installs easily with hand tools and no special tools, knowledge or equipment. (you just need a torque wrench, sockets a punch for the roll pin) Offroad this thing is amazing and will pull your jeep over things that were impossible before. However on-road this is VERY sensitive to tire pressure. Make sure you rotate your tires often and monitor tire pressure frequently. even 1-2 PSI is enough for it to act squirrely. This is especially noticeable for the first 1000 miles. During break in even in 2wd with the locker in in a front differential, It can lock up and make the jeep hard to handle. After it gets worn in - it works like a dream but if you put it in right before winter you will struggle. During break in the unlocks are LOUD -almost like a bang. You will get looks in parking lots where people think you broke something. The steering is much tighter in 4wd then before you put this locker in and it will not turn as tightly in 4wd. Offroad in 4lo with this in the front dana 30 you will have to make more multi point turns (or get a terra 2w low kit for your np231 so you can shift in and out of 2w/4w low on the fly to get the front to unlock) The TJ i put this in didn't work right until i ran it through a couple tanks of gas and flat towed it at 65 for about 650 miles - then it was good to go. In the YJ i put this in it wasn't "right" with the world until just after 1000 miles This does have some negative driving characteristics in 4wd as well. If it's icy you need to be very careful - if you have this in the front axle it will understeer and the locker will not always differentiate because it needs that friction with the road to do so. you will find yourself putting more and more wheel into a turn and then when it finally unlocks it will get squirrely. It will also understeer and is much more likely to loose lateral control in the ice. If you put one of these In the rear it will torque steer (pushing you in a straight line) for as long as you are on the gas. If you don't watch it closely you WILL do unintentional lane changes or donuts when its icy out on the road. Do not just toss the keys to your buddy who doesn't know how to drive an auto locker in in a light vehicle when its shitty out. It will take some time to learn to drive it, you drive allot with your foot - you learn to let off around curves, lane changes etc. Make sure to give yourself some time to adjust to how to drive one of these on the road. Spend some parking lot and back road time with it when its crappy out until you get used to it. When shifting out of 4wd the jeep will have a tendency to not unlock the front axle. If you let it roll with the trans in neutral and turn the wheel back and forth a bit it helps. This gets much much better after you break it it (that first 1000 or so) Finally if you didn't pay attention to the tire size limits - you are much more likely to break axle shafts with larger tires with one of these. Make sure you know out to pound out a u-joint or pull and inner CV . I didn't start breaking things until i went over 33s then it was quite often until i went to 4340 chromoly shafts. The inners are what tend to break on stock shafts and the CV cups blow up on the ZJ shafts. basically take your time, learn to drive it, keep in mind of the limitations and dont judge it until you have that first 1000 or so on it and enjoy the massive off-road advantages

### ⭐⭐⭐⭐⭐ Review
*by M***2 on 20 August 2024*

El producto es gran calidad, lo he usado bajo condiciones de alta demanda sin ningún inconveniente, hace que mi camioneta deje 2 marcas de llanta en el pavimento, una belleza.

### ⭐⭐⭐⭐⭐ Review
*by M***A on 23 February 2023*

Facil de instalar, funciona perfecto. Los instale en los 2 diferenciales(delantero (Dana 30 y trasero chysler 8.25 de 27 estrías ambos)) Mi xj del 92 ahora si es 4x4 real. lo recomiendo!!

## Frequently Bought Together

- USA Standard Gear Spartan Locker for Dana 30 Differential 27 Spline (SL D30-27)
- Dana 30 Differential Cover Gasket D030
- MG21103 Dana 30/44 Front Axle Tube Seal Pair For Jeep Wrangler JK JKU 2007-2018, YJ 1987-1995, TJ 1997-2006, LJ 2004-2006, Cherokee (XJ) 1984-2001, Grand Cherokee (ZJ) 1993-2001 (2PCS Red)

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---

*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-03*