Curious who makes Peterbilt trucks and what engines they use? Here's a look at the brand's ownership and the powerplants ...

Still, Kenworth does not stop there. For uses needing more power, torque, or flexibility, it also provides Cummins engines — most famously the X15. Both engines are incredible in their own right, but ...

Cummins power plants that feature grid heaters include its 5.9-liter models dating back to 1989 and the larger 6.7-liter engines that power heavy-duty Ram trucks from 2007 up to the 2024 model years.

Cummins engines are well-known in the diesel community and have been under the hood of many truck models. However, some missed the mark on reliability.