---
product_id: 247967534
title: "Spartan Helical Limited Slip Differential Worm Gear Positraction Dana 30 Front 27 Spline 3.73 & Up"
brand: "usa standard gear"
price: "8433 zł"
currency: PLN
in_stock: true
url: https://www.desertcart.pl/products/247967534-spartan-helical-limited-slip-differential-worm-gear-positraction-dana-30
store_origin: PL
region: Poland
---

# Maintenance-free design, install and forget 10-pinion helical worm gear for max traction Forged 8620 chromoly steel for ultimate durability Spartan Helical Limited Slip Differential Worm Gear Positraction Dana 30 Front 27 Spline 3.73 & Up

**Brand:** usa standard gear
**Price:** 8433 zł
**Availability:** ✅ In Stock

## Summary

> 🛞 Unlock unstoppable grip with Spartan Helical LSD—where power meets precision.

## Quick Answers

- **What is this?** Spartan Helical Limited Slip Differential Worm Gear Positraction Dana 30 Front 27 Spline 3.73 & Up by usa standard gear
- **How much does it cost?** 8433 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/247967534-spartan-helical-limited-slip-differential-worm-gear-positraction-dana-30)

## 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 Fitment:** Tailored for Dana 30 Front 27 spline, 3.73+ gear ratios—perfect OEM replacement.
- • **Unmatched Durability:** Crafted from forged 8620 chromoly alloy for rugged, long-lasting performance.
- • **Smooth, Linear Traction:** Helical worm gear design ensures quiet, seamless power transfer with zero slip.
- • **Maintenance-Free Reliability:** No upkeep needed—focus on the road, not your differential.
- • **Optimized Gear Oil Compatibility:** Engineered for non-synthetic 80W-90 GL-5 gear oil, maximizing lifespan and efficiency.

## Overview

The Spartan Helical Limited Slip Differential is a high-performance Dana 30 front differential upgrade featuring a 10-pinion helical worm gear design for superior traction and smooth engagement. Built with forged 8620 chromoly steel internals and case, it offers exceptional durability and maintenance-free operation. Designed for 27 spline axles with 3.73 and higher gear ratios, it delivers reliable, quiet, and efficient power transfer ideal for off-road and challenging driving conditions.

## Description

Increase the traction capability of your Dana 30 front diff with the Spartan Helical LSD from USA Standard Gear's Spartan Locker brand. This helical gear design provides years of maintenance-free service. When wheel slippage occurs, its pre-loaded worm gears funnel more power to the tire with the best traction. This 10-pinion USA Standard Gear design has a strength advantage over an equivalently sized 6-pinion or 8-pinion unit because it has more points of contact and more surface contact area to deliver optimal load distribution.Compared to other types of limited slip differentials or positraction units, the Spartan Helical LSD provides smoother engagement, quieter operation, and requires no maintenance. Built tough, the Spartan Helical LSD is a fully assembled unit featuring a forged 8620 chromoly case and stout 8620 chromoly alloy internals for superior durability. Whether you’re facing mud, loose gravel, or steep inclines on the trail or slippery snow or rain on the road, the Spartan Helical LSD will ensure you have unrivalled traction and supreme confidence in your vehicle.USA Standard Gear® sets the standard for quality OE replacement parts at affordable pricing. USA Standards provides the widest selection of drivetrain replacement parts, including ring & pinions, axles, Perfect Fit driveshafts, transmission and transfer case components, and installation kits, as well as the Spartan Locker® – the toughest lunchbox locker on the market. Designed for the general installer and do-it-yourself customer, USA Standard provides unmatched reliability in replacement drivetrain products.

## Features

- FITMENT: Dana 30 Front 27 spline, 3.73-and-up ratio
- METALURGY: Forged 8620 steel alloy case and internals for superior durability.
- SMOOTH TRACTION: Smooth engagement and linear traction
- GEAR OIL: Recommended gear oil: Non-synthetic 80W-90 GL-5. Use of friction modifiers not recommended
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Spartan Locker |
| Brand | USA Standard Gear |
| Model | Spartan Locker Helical Worm Gear Limited Slip Differential for Dana 30 27 Spline 3.73 & Up |
| Package Dimensions | 23.09 x 21.59 x 21.59 cm; 6.74 kg |
| Item model number | SL D30-4-27-LSD |
| Exterior | Machined |
| Manufacturer part number | SL D30-4-27-LSD |
| Special Features | FITMENT: Dana 30 Front 27 spline, 3.73-and-up ratio, GEAR OIL: Recommended gear oil: Non-synthetic 80W-90 GL-5. Use of friction modifiers not recommended, MAINTENANCE FREE: Maintenance free, no worry performance, METALURGY: Forged 8620 chromoly case, 8620 chromoly alloy internals for superior durability, SMOOTH TRACTION: Smooth engagement and linear traction |
| Item Weight | 6.74 kg |

## Images

![Spartan Helical Limited Slip Differential Worm Gear Positraction Dana 30 Front 27 Spline 3.73 & Up - Image 1](https://m.media-amazon.com/images/I/71aiQDYLYFL.jpg)
![Spartan Helical Limited Slip Differential Worm Gear Positraction Dana 30 Front 27 Spline 3.73 & Up - Image 2](https://m.media-amazon.com/images/I/71fQ+8QGsnL.jpg)
![Spartan Helical Limited Slip Differential Worm Gear Positraction Dana 30 Front 27 Spline 3.73 & Up - Image 3](https://m.media-amazon.com/images/I/61qmvKpTNbL.jpg)
![Spartan Helical Limited Slip Differential Worm Gear Positraction Dana 30 Front 27 Spline 3.73 & Up - Image 4](https://m.media-amazon.com/images/I/71OtGcUxq5L.jpg)
![Spartan Helical Limited Slip Differential Worm Gear Positraction Dana 30 Front 27 Spline 3.73 & Up - Image 5](https://m.media-amazon.com/images/I/71X-tDqbw7L.jpg)

## Frequently Bought Together

- Spartan Locker Helical Limited Slip Differential Worm Gear Positraction Dana 30 Front 27 Spline 3.73 & Up (SL D30-4-27-LSD)
- Yukon Gear & Axle (YK D30-F) Front Master Overhaul Kit for Dana 30 Axle

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-24*