PETERBILT ENGINES

Paccar MX-13

The 12.9-liter PACCAR MX-13 engine is characterized by its combination of proven technologies and state-of-the-art innovations that improve fuel economy. Power offerings are expanded with the addition of a 500 horsepower rating with 1,850 lb-ft of torque. Download the MX-13 Brochure Learn More About The MX-13

Paccar MX-11

The PACCAR MX-11 engine provides ideal performance, weight savings and fuel efficiency for a wide range of applications, including regional haul, tanker, bulk haul, construction and refuse. The 10.8-liter engine has an output of up to 430 horsepower and 1,550 lb.-ft. of torque. Download the MX-11 Brochure Learn More About The MX-11

Paccar PX-9

The 8.9-liter PACCAR PX-9 engine has one of the highest power-to-weight ratios in its class, with heavy-duty features like replaceable wet liners, roller cam followers, bypass oil filtration and targeted piston-cooling. Download the PX-9 Brochure Learn More About The PX-9

Paccar PX-7

The 8.9-liter PACCAR PX-9 engine has one of the highest power-to-weight ratios in its class, with heavy-duty features like replaceable wet liners, roller cam followers, bypass oil filtration and targeted piston-cooling. Download the PX-7 Brochure Learn More About The PX-7

Cummins ISL9

The ISL9 features common technology with the Heavy-Duty ISX15 and ISX12 for exceptional performance. Common components include the XPI fuel system, a high-capacity Electronic Control Module (ECM) and the patented Cummins VGT™ Turbocharger from Cummins Turbo Technologies. Ratings range from 260-380 hp (194-283 kW), with 550 lb-ft of clutch engagement torque. Download the ISL9 Brochure Learn More About The ISL9

Cummins IS12

Cummins ISX12 is making a huge impact in work trucks of all types, from mixers and dumps to day cabs and LTL operations. It combines the strength and reliability of proven technology from the ISX15 with a high power-to-weight ratio and over 800 lb-ft (1085 n•M) of clutch engagement torque. The ISX12 is ideal in operations calling for a compact, heavy-duty engine. Download the ISX12 Brochure Learn More About The ISX12

Cummins IS15

The Cummins ISX15 is the only engine offered as an option by every major truck manufacturer in the business and is the most popular heavy-duty engine in North America. It was the first engine certified to meet 2014 Environmental Protection Agency (EPA) and Department of Transportation (DOT) regulations, a full year ahead of schedule. Download the ISX15 Brochure Learn More About The ISX15