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Peterbilt Truck Parts — Engines, Transmissions & Drivetrain

A premium Class 8 brand favored by owner-operators. The 579 and 389 are linehaul staples, commonly on PACCAR MX or Cummins power. Strong aftermarket keeps sourcing practical.

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Popular Peterbilt models

Peterbilt 579The modern aero linehaul flagship, typically PACCAR MX-13 powered.Find parts Peterbilt 389The classic long-hood, popular with owner-operators; often Cummins.Find parts Peterbilt 567Vocational and heavy-haul chassis.Find parts

Common Peterbilt engines

PACCAR MX-13 Cummins X15

Frequently asked questions

What engines do Peterbilt trucks use?

Late-model 579s commonly run PACCAR MX-13; many 389s run Cummins. Share the VIN and we'll confirm.