Peterbilt has chosen new Dana Spicer axles as standard equipment for its over-the-road heavy-duty trucks, including Models 379, 387, 385, 378 and 362.

According to Peterbilt, the axles' enhanced Low Maintenance System extends lube intervals to 1-yr./100,000 mi.

Other features include a 55-deg. wheelcut for a tighter turning radius, and a 1.25-in. center drop in the axle beam, providing more clearance for the engine oil pan. The axles have lightweight, forged integral steering arms with a power rib beam.

The Dana Spicer axles are the E12021, which is the base model, and the E1202W, a wide-trac version, both rated at 12,000 lb. Another wide-trac axle, the E1322W Series, rated at 13,200 lb., is also available.

The axles will be available as an option on Peterbilt's vocational Model 357 and medium-duty Model 330.