Dana / Spicer DS404-264

The Dana Spicer DS404-264 is a high-performance, heavy-duty tandem drive axle differential designed for use in Class 8 trucks and severe-duty vocational vehicles. Known for its strength, dependability, and ease of maintenance, the DS404 features a hypoid gear design that ensures efficient power transmission with reduced noise and vibration.

Engineered to support a gross axle weight rating (GAWR) of 40,000 lbs, the DS404 is built with a rugged cast ductile iron housing and heat-treated components for extended service life. It is highly configurable, offering a wide range of gear ratios and compatibility with various suspension systems and brake configurations. This makes it a preferred choice for fleets requiring cost-effective, long-lasting driveline solutions.

Technical Specifications

General Features:

• Tandem drive axle differential for heavy-duty applications
• Single-reduction, hypoid gear design
• Designed for both on-highway and vocational use

Axle Rating & Capacity:

• Gross Axle Weight Rating (GAWR): 40,000 lbs (18,144 kg)
• Designed for Class 8 trucks and severe-duty environments

Gear and Shaft Details:

• Ring Gear Diameter: 15.25 inches (387.35 mm)
• Input Shaft Spline: 39-spline standard
• Available Gear Ratios:
  • 3.08, 3.21, 3.36, 3.55, 3.70, 3.90, 4.10, 4.33, 4.63, 4.88, 5.29

Construction and Materials:

• Housing: Cast ductile iron for high strength and durability
• Heat-treated, high-strength steel gears

Carrier Configuration:

• Carrier Type: DS-style (downward spiral hypoid)
• Carrier Weight (approx.): 678 lbs (308 kg)

Lubrication System:

• Internal pressurized lubrication for improved cooling and component life
• Optional lubrication pump for high-demand environments
• Oil Capacity (approx.): 16–18 quarts per axle, depending on configuration

Differential Locking Options:

• Optional inter-axle differential lock (power divider lock) for improved traction
• Air-actuated locking systems available

Suspension and Brake Compatibility:

• Compatible with air, leaf, and walking beam suspension systems
• Multiple track widths available
• ABS sensor-ready hubs optional

Serviceability and Maintenance:

• Standardized design with widely available replacement parts
• Easily removable carrier for in-shop servicing
• Sealed input for reduced lubricant loss

Applications:

• Long-haul trucking
• Construction and dump trucks
• Logging and forestry vehicles
• Refuse and waste management trucks
• Mining and oilfield support vehicles

Key Benefits:

• High-torque, high-load capability
• Quiet, smooth operation due to hypoid gear design
• Wide range of gear ratios for fuel economy and performance optimization
• Designed for ease of maintenance and reduced downtime
• Proven durability in demanding fleet environments