Zumbrota Drivetrain RAA435-1658B Remanufactured GM 14 Bolt Rear Axle Assembly 3.73 Ratio

The Zumbrota Drivetrain RAA435-1658B is a professionally remanufactured complete rear axle assembly engineered for GM 3500 pickup trucks equipped with the heavy-duty GM 10.5-inch 14 bolt full-float rear differential. This assembly features a 3.73 gear ratio with an open differential configuration, designed specifically for dual rear wheel (DRW) applications without wide track spacing.

Remanufacturing Process:

• Each assembly undergoes thorough inspection for straightness, cracks, and surface wear
• Axle tubes are straightened to OEM specifications for proper alignment
• All bearings, seals, crush sleeves, pinion nuts, and shims are replaced with new components
• Ring and pinion gears are meticulously inspected for optimal tooth contact patterns
• Rolling torque is precisely measured in inch-pounds for accurate setup and longevity
• Gear backlash is set to manufacturer specifications ensuring proper lubrication and quiet operation
• Exclusive hydro-blast rinse and sandblasting procedure cleans internal and external components

Key Features:

• GM 10.5-inch 14 bolt full-float design for heavy-duty applications
• 3.73 gear ratio provides balanced performance for towing and highway driving
• Open differential configuration (standard)
• DRW (dual rear wheel) fitment without wide track
• Remanufactured to rigorous quality standards by skilled technicians
• Backed by Zumbrota's warranty coverage

Zumbrota Drivetrain has served the automotive industry for over 30 years from their facility in Zumbrota, Minnesota. Each complete axle assembly is built to deliver reliable performance and durability for demanding truck applications, offering a cost-effective alternative to new OEM assemblies without compromising quality.