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Eaton Truetrac 917A738 Ford F-150 8.8" Front Differential 09-23 - Unmounted
Eaton Truetrac 917A738 Ford F-150 8.8" Front Differential 09-23
Eaton Truetrac 917A738 Ford F-150 8.8" Front Differential 09-23 - Unmounted
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Eaton Detroit Truetrac Differential 09-23 Ford F-150 4x4 Front Axle 31 Spline 8.8in All Ratios

Eaton
EAT917A738
Differentials
20+ Units In Stock - Ships Next Business Day
$ 873.91 $ 803.99
$ 803.99

SKU: 917A738

Eaton Detroit Truetrac Differential for 2009-2023 Ford F-150 4x4 Front Axle - 31 Spline, 8.8 Inch, All Ratios

The Eaton Detroit Truetrac Differential (Part Number: 917A738), a helical-gear limited-slip unit designed specifically for the front 8.8-inch independent front suspension (IFS) axle. This differential delivers consistent torque distribution to both wheels, ensuring reliable power transfer during acceleration, cornering, and low-traction scenarios like off-road trails, snow-covered roads, or heavy towing. Unlike traditional open differentials that send power to the wheel with the least resistance, the Truetrac's gear-based system automatically biases torque up to 5:1 to the wheel with grip, reducing wheel spin and maintaining forward momentum without the chatter or wear associated with clutch-type units. Built with durable steel construction and precision-machined helical gears, it operates quietly and requires no maintenance, making it a dependable addition for daily drivers and enthusiasts who demand traction without compromise.

Key Specifications

  • Differential Type: Helical-gear limited-slip
  • Ring Gear Size: 8.8 inches
  • Gear Spline Tooth Count: 31
  • Axle Shaft Diameter: 1.32 inches
  • Gear Ratios: All ratios compatible
  • Carrier Material: Steel
  • Lubrication: Use only petroleum-mineral based GL-5 rated 80W-90 gear oil, avoid synthetics or friction modifiers
  • Weight: 25 lbs
  • Shipping Box Dimensions: 8 x 8 x 8.5 inches

Vehicle Fitment

This differential fits the front axle of:

  • Year: 2009-2023
  • Make: Ford
  • Model: F-150 4x4 (with 8.8-inch IFS axle, 31-spline axles, not compatible with OEM electronic locking differentials)

Confirm your vehicle's axle configuration matches before installation for seamless compatibility.

What's Included in the Purchase

  • (1) Eaton Detroit Truetrac Differential Assembly (917A738)

Note: Carrier bearings are not included reuse existing or purchase separately as needed

With its proven ability to handle demanding conditions while preserving tire life and vehicle stability, the Eaton Detroit Truetrac 917A738 stands as the practical solution for Ford F-150 owners seeking enhanced traction and control. Backed by a limited lifetime warranty, it installs directly into your factory housing for a straightforward upgrade that pays off in every drive.

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