Available with either the PACCAR PX-7 or the PACCAR PX-9, the 348 has the power to get the job done. The 6.7-liter PACCAR PX-7 Engine delivers superior performance, minimizes operational costs and maximizes uptime for medium-duty customers. Reduced maintenance, long service intervals and excellent fuel efficiency add up to a superior lifetime value. On the 348, the PACCAR PX-7 is available in horsepower ratings from 280 to 360hp and offers up to 800 lb-ft of torque. The 8.9-liter PACCAR PX-9 Engine has one of the highest power-to-weight ratios in its class (260-380hp), with heavy-duty features like replaceable wet liners, roller cam followers, bypass oil filtration and targeted piston-cooling. Available in both medium- and heavy-duty configurations, PACCAR PX Engine options give customers in traditional Class 7, Class 8, vocational or specialty applications outstanding fuel economy, greater reliability and unsurpassed performance.