Zumbrota Drivetrain RAA440-117B Remanufactured Rear Axle Assembly Ford 8.8 IRS 3.73 Ratio

The Zumbrota Drivetrain RAA440-117B is a remanufactured complete rear axle assembly built for the Ford 8.8 Independent Rear Suspension (IRS) with a 3.73 gear ratio. Engineered to restore OEM performance and reliability, this drop-in replacement axle assembly undergoes Zumbrota's rigorous remanufacturing process — delivering a unit that meets or exceeds original factory standards.

Remanufacturing Process:

• 100% inspection of all internal components including ring & pinions, internal gears, clutches, and carriers
• 100% replacement of all bearings, seals, crush sleeves, pinion nuts, and shims
• All housings tested for surface wear and cracks
• All housings restored to OEM finish via state-of-the-art hydro-blasting and rinsing process
• Axle tubes inspected to ensure OEM standards of straightness
• Exclusive hydro-blast rinse and sandblasting procedure on internal and external parts, followed by proprietary shot-enticed deep cleaning
• Correct rolling torque established using inch-pound measurements for precision setup and longevity
• Correct gear backlash set to ensure proper gear lubrication and quiet operation

Specifications:

• Axle Type: Ford 8.8 IRS (Independent Rear Suspension)
• Gear Ratio: 3.73
• Part Number: RAA440-117B

Each unit is shipped in a high-density plastic tote to protect against in-transit damage, arriving ready for installation. A core return is required with this remanufactured unit.