Built for the Long Haul

Built for high performance. Optimized for Peterbilt.

Whether you’re on the interstate, the jobsite or the city streets, Peterbilt is the right choice. When it is an integrated PACCAR Powertrain, you can count on economic performance and the power, durability and toughness to get the job done.

Engineered for robust power and unsurpassed reliability, and designed for optimal performance inside a Peterbilt, the integrated PACCAR Powertrain features industry-leading attention to detail in its innovative designs and advanced systems integrations.

The PACCAR Powertrain is crafted using the strongest, yet lightest materials available, ensuring your truck runs cleaner, longer and more efficiently, no matter what kind of work you do.

Backed by Peterbilt’s exceptional customer service and support, this is a powertrain that will keep you going for years and miles to come.

The PACCAR Engine

Always durable and dependable, PACCAR engines are an engineering marvel. Machined and assembled in a state-of-the-art plant in Mississippi, PACCAR engines feature innovations designed with your workload in mind.

Each PACCAR engine continues to push the boundaries in engine technology, as we roll out innovation after innovation:

  • High Pressure Common Rail Fuel Injection for improved fuel efficiency and lower emissions
  • Fractured Cap Technology for superior strength and longevity
  • Selective Catalytic Reduction (SCR) to ensure your truck is in EPA emissions compliance
  • Compacted Graphite Iron engine block is 75% stronger and 20% lighter than gray iron

With high-quality, lightweight materials designed for fuel-efficiency, and some of the top power-to-weight ratios available in their class, PACCAR engines are an outstanding choice for both performance and economy.

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The PACCAR Engine

The PACCAR Transmission

Best-in-class reliability and performance defines the PACCAR transmission. Ideal for highway fleets, the PACCAR transmission integrates advanced designs and features for smoother shifting and nearly effortless heavy-duty hauling.

With 1,850 lb.-ft. of torque, the PACCAR 12-speed transmission is the lightest heavy-duty automated transmissions available on the market – giving your truck the perfect blend of unparalleled power and fuel economy.

When it comes to maintenance, the PACCAR transmission is in a class of its own. Not only does it require half as much oil as other automated transmissions, PACCAR also has the longest transmission oil change interval for linehaul applications – to keep you running for 750,000 miles.

And with robust, lightweight materials and intuitive shifting, PACCAR takes your truck’s fuel-efficiency to the next level.

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The PACCAR Transmission

The PACCAR Drive Axle

Featuring the lightest axle in the industry, PACCAR axles are optimized for fuel efficiency and tackling heavy payloads with ease.

With its laser-welded differential, low angle spiral gearing and first-of-its-kind pinion thru-shaft design, the PACCAR 40K tandem axle is built for strength and fuel savings the moment you hit the road. Plus, by eliminating fasteners and improving design toughness, the PACCAR 40K tandem axle helps reduce oil churning losses.

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The PACCAR Drive Axle

The PACCAR Steer Axle

Through the lightweight steer axle, tandem axle and wide track axle designs, PACCAR uses streamlined power distribution to keep your truck going strong, through even the most demanding commercial applications.

The PACCAR front steer axle delivers a lightweight and durable option to enhance customer vehicle payload. Available with weight ratings from 20,000 – 22,000 pounds, the front axle is designed for demanding applications such as construction, heavy haul, refuse and other vocational uses.

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PACCAR Steer Axle