Eaton 913A592 Detroit Truetrac LSD for Front Dana 44 8.5" 30-Spline 3.92+ Ratio

Regular price: $707.99
Regular price: ~~$777.25~~
Sale price: $707.99

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Product Specification:

SKU:EAT913A592

MPN: 913A592

Weight: 26.3 lb

Inventory: 8

Type: Differentials

Vehicle Fitment

Front Dana 44 solid axle applications (non-axle-disconnect style housing)

Fitment Notes

Requires non-axle-disconnect front Dana 44 housing.
Applies only to 30-spline axle shafts (≈ 1.31-inch diameter).
Compatible with ring & pinion ratios of **3.92 and numerically higher** (i.e., steeper gears).
Not compatible with thin/thick ring gear differences without verifying your Dana 44 case spec.

Features

Helical-gear limited-slip differential (Detroit Truetrac) for smooth torque bias during slip.

Designed for high-traction use: off-road, towing, work, and street performance.

Durable steel build with Eaton's proven internal design - no wearable clutch packs.

Quiet, automatic engagement in both forward & reverse.

Optimized for 8.5-inch ring gear size in Dana 44 front applications.

Maintenance-free - standard gear oil; no special friction modifiers required.

Great upgrade for handling and traction in adverse conditions without sacrificing road manners.

Product weight around 24.79 lb to suit front axle packaging constraints. (Approx.)

Specifications

Differential Type: Detroit Truetrac Limited-Slip (Helical Gear)
Axle Location: Front solid axle, Dana 44 (non-axle-disconnect case)
Spline Count: **30** EA
Axle Shaft Diameter: ~1.31 in
Ring Gear Size: ~8.5 in
Gear Ratio: 3.92:1 and steeper (numerically higher) only
Product Weight: ~24.79 lb

Included Components

1x Eaton Detroit Truetrac differential carrier assembly (913A592)
Installation instructions / Eaton guide

Product Description

The Eaton 913A592 Detroit Truetrac is a high-performance limited-slip differential engineered for front Dana 44 solid axles with non-axle-disconnect housings. Its 30-spline design and ~1.31-inch diameter shafts ensure compatibility with many Dana 44 applications. With ring & pinion ratios of 3.92 and up, this Truetrac delivers stronger torque biasing under load and enhances traction in demanding scenarios without the harshness of a mechanical locker.

This unit is ideal for trucks used off road, for towing, or in adverse weather conditions where traction is at a premium. It retains OEM-like quietness when coasting, yet provides grip when you need it. Before purchase, verify that your front axle is a Dana 44, non-axle-disconnect housing, with matching spline count and gear ratio requirement. Also double-check that the ring gear size matches your housing. Fitment beyond these constraints is unconfirmed.