---
product_id: 262517498
title: "USA Standard Gear Spartan Locker For Dana 30 Differential 27 Spline (Sl D30-27)"
brand: "usa standard gear"
price: "€ 469.48"
currency: EUR
in_stock: true
reviews_count: 5
category: "Usa Standard Gear"
url: https://www.desertcart.fi/products/262517498-usa-standard-gear-spartan-locker-for-dana-30-differential-27
store_origin: FI
region: Finland
---

# 100% mechanical lockup 27 spline axle fit 9310 steel strength USA Standard Gear Spartan Locker For Dana 30 Differential 27 Spline (Sl D30-27)

**Brand:** usa standard gear
**Price:** € 469.48
**Availability:** ✅ In Stock

## Summary

> 🔧 Lock in power, unlock your off-road edge!

## Quick Answers

- **What is this?** USA Standard Gear Spartan Locker For Dana 30 Differential 27 Spline (Sl D30-27) by usa standard gear
- **How much does it cost?** € 469.48 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/262517498-usa-standard-gear-spartan-locker-for-dana-30-differential-27)

## 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

- • **Precision Fit:** Engineered specifically for Dana Spicer 30 with 27 spline axles—seamless integration guaranteed
- • **Reliable Lockup:** Mechanical locker ensures a dependable 100% lockup for ultimate traction control
- • **Direct Replacement:** Easily swaps out standard carrier spiders—upgrade your differential without hassle
- • **Unmatched Durability:** Crafted from premium 9310 steel for rock-solid strength and longevity
- • **Optimized Performance:** Machined exterior and robust design deliver enhanced drivetrain efficiency and off-road confidence

## Overview

The USA Standard Gear Spartan Locker for Dana 30 Differential 27 Spline (SL D30-27) is a high-strength mechanical locker made from 9310 steel, designed to replace standard carrier spiders. It fits Dana Spicer 30 axles with 27 splines and guarantees a reliable 100% lockup, enhancing traction and drivetrain performance for serious off-road enthusiasts.

## Description

Buy USA Standard Gear Spartan Locker For Dana 30 Differential 27 Spline (Sl D30-27) online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: NIce auto locker but some caveats - 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: Excelente - 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 |
|---------------|-------|
| Manufacturer | USA Standard Gear |
| Brand | USA Standard Gear |
| Model | Spartan Locker for Dana 30 Differential 27 Spline SL D44-19 |
| Item model number | SL D30-27 |
| Exterior | Machined |
| Manufacturer Part Number | SL D30-27 |
| OEM Part Number | SLD3027 |
| Special Features | Lockable |
| Item Weight | 2.11 Kilograms |

## Product Details

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

## Images

![USA Standard Gear Spartan Locker For Dana 30 Differential 27 Spline (Sl D30-27) - Image 1](https://m.media-amazon.com/images/I/71zU0mntDQL.jpg)

## Available Options

This product comes in different **Style** 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

### ⭐⭐⭐⭐⭐ NIce auto locker but some caveats
*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

### ⭐⭐⭐⭐⭐ Excelente
*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.

### ⭐⭐⭐⭐⭐ Fantastico!!
*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 Finland*
*Store origin: FI*
*Last updated: 2026-03-08*