Dana / Spicer D170-342

Dana Spicer D170-342
D170342GTP

The Dana Spicer D170 Series is a heavy-duty tandem drive axle differential designed to meet the demands of high-torque, high-load applications. Engineered for maximum durability, the D170 offers a rugged design, advanced gearing technology, and a wide selection of gear ratios for performance tuning across various vocational and on-highway applications.

Built to handle extreme duty cycles, the D170 differential is well-suited for refuse trucks, construction vehicles, and long-haul transport. It features dual-reduction gearing with a spiral bevel input and helical inter-axle gearing, which improves power flow and minimizes wear. The D170 is also known for its high torque capacity, enhanced thermal management, and long maintenance intervals, making it a cost-effective solution for fleet operators.

Technical Specifications

General Features:

• Tandem drive axle differential designed for severe-duty and high-GVWR applications
• Heavy-duty, dual-reduction gear system for maximum torque transfer
• Designed for on-highway, off-highway, and vocational truck markets

Axle Rating & Load Capacity:

• Gross Axle Weight Rating (GAWR): 46,000 lbs (20,865 kg)
• Maximum GCW (Gross Combined Weight): up to 160,000 lbs (72,575 kg)

Gear Design and Ratios:

• Gear Type: Dual-reduction with spiral bevel input and helical inter-axle gearing
• Ring Gear Diameter: 17 inches (432 mm)
• Input Shaft Spline Count: 39-spline (standard)
• Available Gear Ratios:
  • 3.07, 3.31, 3.55, 3.70, 3.91, 4.10, 4.33, 4.56, 4.78, 5.13, 5.29, 5.38, 5.57, 5.86

Construction and Materials:

• Carrier Housing: Cast ductile iron for strength and resistance to thermal and mechanical stress
• Heat-treated alloy steel gears for extended wear life
• High-strength axle shafts and differential case

Lubrication and Cooling:

• Pressurized lubrication system with internal channels for improved oil flow
• Optional lube pump for severe service applications
• Oil Capacity: Approx. 20–22 quarts per axle (varies by configuration)

Differential Lock and Traction:

• Inter-axle differential lock (power divider lock) standard on most models
• Optional driver-controlled lockers for additional traction in off-road or poor-traction conditions
• Enhanced traction options for logging, oilfield, and off-road conditions

Suspension & Brake Compatibility:

• Compatible with a wide range of suspensions: air, mechanical, and walking beam
• ABS sensor-ready hub configurations available
• Multiple track widths and axle housing configurations for OEM flexibility

Serviceability and Maintenance:

• Modular carrier design for simplified removal and service
• Extended lubrication change intervals (depending on oil type and duty cycle)
• Standardized internal parts with other Dana heavy-duty axles for easier sourcing

Applications:

• Refuse and sanitation trucks
• Dump and construction vehicles
• Logging and forestry trucks
• Oilfield and mining support vehicles
• Heavy-haul and specialty vocational trucks
• On-highway trucks requiring high GCW capacity

Key Benefits:

• High-capacity axle designed for maximum torque and heavy payloads
• Dual-reduction gear design provides strength and smooth torque transfer
• Broad gear ratio range allows for tuning performance and fuel efficiency
• Designed for longevity and reduced downtime in severe-duty applications
• Supported by Dana’s global service network and parts availability