Spicer AMO1750-4D Auxiliary Transmission

Spicer AMO1750-4D Auxiliary Transmission
AMO17504DGTP

The Spicer AMO1750-4D is a four-speed auxiliary transmission engineered to extend the gear range of heavy-duty truck drivelines. As part of the proven Spicer 1750 Series, this unit is designed to provide greater flexibility, torque handling, and durability for demanding vocational and off-highway applications. The AMO1750-4D delivers a versatile 2.37 to 0.812 gear spread across four speeds—perfect for both off-highway torque demands and on-road efficiency. Its output shaft is configured with 10 splines, aligning with standardized driveline interfaces for seamless integration and serviceability.

The “AMO” designation identifies this as a manual-shift overdrive auxiliary transmission, while the “4D” variant refers to its specific internal gearing and shift configuration. It works in tandem with a truck’s primary transmission to deliver optimized performance, fuel efficiency, and pulling power across a wide range of operating conditions.

Technical Specifications:

• Model: AMO1750-4D
• Speeds: 4 forward
• Shift Type: Manual Shift
• Input Shaft Diameter: 2.0 inches
• Output Shaft Spline Count: 10
• Gear Ratios:
  • 1st: 2.37
  • 2nd: 1.24
  • 3rd (Direct): 1.00
  • 4th (Overdrive): 0.812
• Lubrication: Splash lubrication system
• Recommended Applications: Heavy-duty trucks, vocational vehicles, off-highway equipment