Axle S175 Dana.

The Spicer 175 series is Dana’s most efficient and reliable single heavy-duty drive axle and is supported by a host of performance-optimizing features, including a differential case design with a premium integrated ring gear for reduced weight and oil churning losses, and precision AdvanTEK^® gearing for improve efficiency. Weighing 27 kilograms less than previous products, the Spicer 175 series maximizes freight tonnes per kilometer and is approved for up to 52 tonnes gross combination weight rating.
Offering a broad range of gear ratios, from an industry-low 1.95:1 to 3.42:1, the Spicer 175 series features Spicer High-Power Density™ AdvanTEK^® technology to support engines up to 600 hp and 2,750 Nm of torque.  The new axle also includes high-strength pinion bearings, which allow for greater lifespan under heavy loads.  An autonomous lube management system requires less lube while utilizing a patent-pending meter to optimize the amount of lube flow to the high-efficiency bearings.