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9.75″ IRS Rear Axle Assembly for 2015-2017 Navigator, 4.10 Ratio, Posi

  • Units are shipped in high density plastic totes to help eliminate in-transit damage
  • All housings are tested for surface wear and cracks.
  • 100% inspection of all internal parts, including Ring and Pinion’s, Internal Gears, Clutch’s and Carrier’s
  • 100% replacement of bearings, seals, crush sleeves, pinion nuts and shims.
  • All housings are cleaned utilizing our state of the art hydro blasting and rinsing process. This process is what brings all cases back to the OEM finish.
  • Correct rolling torque established using inch pound measurement’s for precision setup and longevity

This fully remanufactured Rear Axle Assembly is backed by an available 7 year, 1 million mile warranty.

Questions? Call Toll-Free: 888-842-0023.

SKU: 18082D Categories: ,


Application Notes:Ratio: 4.10; Ford 9.75 Inch Ring Gear, IRS, With Posi TractionRatio: 4.10; Ford 9.75 Inch Ring Gear, IRS, With Posi Traction.

Remanufacturing Process

Every differential and axle assembly we sell is fully remanufactured to meet or exceed OEM specifications. Our remanufacturing process:

  • Deep Clean – To start the remanufacturing process, each unit is fully disassembled and cleaned.
  • Inspection – The ring and pinion, internal gears, clutches and carriers are carefully inspected. Gears are checked for proper tooth contact, and axle tubes are inspected for straightness.
  • New Components – All seals and bearings are replaced, and gears are reset for correct rolling torque for maximum efficiency and performance. Backlash is reset carefully for maximum longevity and quiet operation.
  • Validation – After reassembly, each unit is spin tested as part of a detailed checklist validation process.

Because of our rigorous remanufacturing process, we can offer the industry’s best warranty on remanufactured differentials and axle assemblies. Each one comes with up to 7 years and 1 million miles of warranty, which can be upgraded to include Pure Care™ no-fault protection. No other differential and axle assembly manufacturer comes close.

Additional information

Weight160 lbs
Dimensions18 × 24 × 34 in
Product Type


Application Notes

Ratio: 4.10; Ford 9.75 Inch Ring Gear, IRS, With Posi Traction

Axle Family

Ford 9.75

Gear Ratio


Ring Gear Diameter



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