Get to Know PACCAR’s Popular 40K Tandem Axles

The PACCAR 40K Tandem Axle’s superior design helps you reach your destination with improved efficiency and durability.

A lightweight solution 

Advanced manufacturing processes make the PACCAR 40K axle up to 150 pounds lighter. When combined with the PACCAR MX-13 engine and PACCAR transmission, the overall weight reduction could be as much as 500 LBS.

Thru-shaft pinion design 

The 40K tandem axle is the first high-performance axle with thru-shaft pinion design, transferring full engine power straight to the road.

Advanced laser welding 

An innovative laser-welded carrier design reduces weight and improves fuel economy without sacrificing an ounce of durability.

PRODUCT HIGHLIGHTS

• Durable pinion thru-shaft design improves internal efficiencies

•  Spiral bevel gearing optimizes inter-axle driveline angles
• High efficiency pinion and differential bearings reduce power losses
• Advanced laser welding eliminates internal fasteners
• Driver controlled forward axle differential lock
• Advanced manufacturing processes achieve up to 150lbs. weight savings

SPECIFICATIONS:

• GCW: 80,000 lbs.
• GAWR: 40,000 lbs.
• Tandem Ratio Range: 2.47 to 3.70
• Straight Torque Rating: 1,650 lb-ft.
• Multi-Torque Rating: 1,850 lb-ft.
• Warranty: Five Years/750,000 miles