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Eaton Detroit Truetrac Differential 30 Spline 1.31in Axle Shaft Dia 4.56 & Up Ratio Rear Dana 60

SKU: EAT913A390

Differential Carriers

EAT Detroit Truetrac Diffs...

Eaton Detroit Truetrac Differential 30 Spline 1.31in Axle Shaft Dia 4.56 & Up Ratio Rear Dana 60

SKU: EAT913A390

Differential Carriers

EAT Detroit Truetrac Diffs...

A$2,674.31
Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.

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Description

Eaton Detroit Truetrac Differential 30 Spline 1.31in Axle Shaft Dia 4.56 & Up Ratio Rear Dana 60

The Detroit Truetrac is a helical-gear style, limited-slip differential that maximizes wheel traction and enhances driving characteristics. Maintenance-free, it features smooth, automatic operation in forward and reverse. Its versatility makes Detroit Truetrac the ideal traction solution for almost any type of vehicle.

Additional Information

Detroit Truetrac® Differential; 30 Spline; 1.31 in. Axle Shaft Diameter; 4.56 And Up Ring Gear Pinion Ratio; Rear Dana 60;

Data: v4.2 - Upd: 2026-11-07 19:43:31

Features

  • Automatic Engagement
  • Durable; Smooth; Quiet Operation
  • Helical Gear Limited Slip Differential
  • Ideal For Most Vehicles
  • No Special Lubrication Or Friction Modifiers Needed
  • Optimized Torque Bias Ratios Deliver Max Acceleration And Handling
  • Works In Forward And Reverse

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Downloads

# Document Type Download
1. Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.2 - Upd: 2026-11-07 20:12:51

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Eaton
StreetFX SKU eat913A390
SFX Item ID 4500414
Accounting SKU eat-913A390
Manufacturer SKU 913A390
Manufacturer UPC N/A
Alternative References ETN-913A390

Differential, Eaton Detroit Truetrac, Limited Slip, 30-Spline, Dana 60, 4.56:1 and Up Ratio, Each

Eaton Detroit Truetrac differentials use a patented design of parallel-axis planetary helix gears to provide a quiet, automatic splitting of torque. They perform like a limited-slip differential under normal driving conditions, automatically transferring torque to the wheel with better traction when ground conditions warrant. These replacement units are available for dozens of axle applications.

Product Attributes
BrandEATON
Manufacturer's Part Number913A390
Part TypeDifferential Carriers
Product LineEaton Detroit Truetrac Differentials
UPC840379360875
Differential Case Design TypeDana 60
RemanufacturedNo
Aftermarket Carrier StyleHelical gear
Cover Bolts10
Carrier Series4
Axle Shaft Spline Quantity30
Manufacturer of AxleGM
Carrier MaterialSteel
Carrier Bearings IncludedNo
QuantitySold individually.
NotesDesigned for 4.56 and numerically higher gear ratios.
Special AttentionEaton recommends a petroleum/mineral based GL-5 80W90 gear oil for all Truetrac differentials. Do not use synthetic gear oil or friction modifiers.

Compatibility

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