Eaton 915A450 Detroit Truetrac Limited-Slip Differential for Dana 80 35-Spline

Regular price: $1,044.99
Regular price: ~~$1,135.86~~
Sale price: $1,044.99

Shipping calculated at checkout.

In Stock: 8

Orders by 1pm PST ship same business day

Free Shipping w/3-4 Day Delivery

Authorized Dealer

Fitment Guarantee

30-Day Hassle Free Returns

Product Specification:

SKU:EAT915A450

MPN: 915A450

Weight: 54.5 lb

Inventory: 8

Type: Differentials

Vehicle Fitment

Dana 80 rear axle, 35-spline shaft count, 4.10 gear ratio and up

Features

Helical-gear style, clutchless limited-slip differential design
Automatically transfers torque to the wheel with traction
Maintenance-free - no friction modifiers or special lube required
Operates smoothly in forward and reverse driving conditions
Improves cornering and acceleration traction over open differential
Fits OE "thin" gear sets in Dana 80 housings with 4.10 and higher ratios
Robust construction suitable for work trucks, towing, off-road and street use
Designed by Eaton's Performance differential division for high durability

Specifications

Ring-gear diameter: 11.5"
Spline count: 35 splines
Axle-shaft diameter approx: 1.52"
Applicable gear ratios: 4.10 and up
Carrier weight approx: 53.65 lb
Differential type: Limited-Slip (Truetrac) for Dana 80

Included Components

1x Eaton 915A450 Truetrac differential assembly
Installation instructions

Product Description

The Eaton 915A450 Detroit Truetrac is a high-performance limited-slip differential engineered for the Dana 80 rear axle with 35-spline shafts and gear ratios of 4.10 and above. Under normal driving conditions it functions as a conventional differential, but when one wheel loses traction the helical gears automatically direct torque to the wheel with grip, improving vehicle stability and control.

Its clutchless, helical-gear design ensures smooth operation and minimal maintenance. Unlike other LSDs it does not require friction modifiers or special lubricants, making it ideal for both street and off-road environments. Whether in a heavy-duty truck, a towing setup or a performance build, this Truetrac delivers reliable traction performance.

When installing this unit, verify your axle is indeed a Dana 80 with 35-spline shafts and the correct gear ratio (4.10 & up). Proper assembly, correct gear fill and lash setting are essential for optimal operation and longevity.