Image credits

Photos are used under their Creative Commons or public-domain licenses. They show representative engines, transmissions and trucks, not specific units for sale.

Semi trucks parked at a truck stop in the rain. Photo: Tony Webster from Portland, Oregon, United States · CC BY 2.0
Original: Rainy Truck Stop — Portage, Indiana (7695522180).jpg
Cummins ISX 600 diesel truck engine. Photo: Panoha · CC BY-SA 3.0
Original: Cummins ISX 600 engine.jpg
Cutaway of a Cummins ISB common-rail cylinder head. Photo: Dana60Cummins · CC BY-SA 3.0
Original: ISB common rail.jpg
Detroit Diesel Series 60 engine. Photo: No machine-readable author provided. Panoha assumed (based on copyright claims). · CC BY-SA 3.0
Original: Detroit D60 diesel.jpg
Caterpillar C15 diesel engine. Photo: US Army · Public domain
Original: Caterpillar C15 engine.4.jpg
PACCAR MX-13 diesel engine. Photo: Spielvogel, the copyright holder of this work, hereby publishes it under the following license: · CC BY-SA 3.0
Original: PACCAR MX-13 engine EURO 6.jpg
PACCAR MX-13 engine on display. Photo: Michael KR · CC BY-SA 4.0
Original: DAF Paccar Motor MX13 IAA 2016 1641.jpg
Volvo D13 diesel engine. Photo: Spielvogel, the copyright holder of this work, hereby publishes it under the following license: · CC BY-SA 3.0
Original: Volvo D13 Euro 6.jpg
Volvo D13 engine installed in a truck. Photo: Panoha · CC BY-SA 3.0
Original: D13 engine.jpg
Mack MP8 diesel engine. Photo: Lehigh Valley, PA · CC BY 2.0
Original: Mack MP8 Engine.jpg
International MaxxForce diesel engine. Photo: Tino Rossini from Toronto, Canada · CC BY 2.0
Original: International Maxx Force (7097582433).jpg
Hino diesel engine displayed beside a Hino truck. Photo: Comyu · CC BY-SA 4.0
Original: Hino Ranger FD2ALBG and A05C Engine at Japan Truck Show 2018.jpg
Isuzu 4HK1 diesel engine. Photo: TTTNIS · Public domain
Original: Isuzu 4HK1-TCH engine.jpg
Eaton Fuller transmission with hybrid drive on display. Photo: Tino Rossini from Toronto, Canada · CC BY 2.0
Original: Fuller Hybrid (6951509972).jpg
Allison automatic transmission on display. Photo: Tino Rossini from Toronto, Canada · CC BY 2.0
Original: Allison Automatic Transmission (6951511166).jpg
Freightliner Cascadia semi truck. Photo: Oleg Yunakov · CC BY-SA 4.0
Original: Freightliner Cascadia.jpg
Freightliner Cascadia hauling a trailer. Photo: Jason Lawrence · CC BY 2.0
Original: Freightliner Cascadia hauling a McLane trailer.jpg
Peterbilt 579 semi truck. Photo: Agnieszka Kwiecień, Nova · CC BY-SA 4.0
Original: Peterbilt 579 Lone Pine 2018-04-07 California 01.jpg
Kenworth T680 semi truck. Photo: Elise240SX · CC BY-SA 4.0
Original: 2022 Kenworth T680 in White, Front Right, 10-05-2022.jpg
International LT semi truck. Photo: Mr.choppers · CC BY-SA 3.0
Original: 2019 International LT 625 trailer truck, front left.jpg
Volvo VNL 860 semi truck. Photo: Oleg Yunakov · CC BY-SA 4.0
Original: Volvo VNL 860 Globetrotter XL - 2.jpg
Mack Anthem day cab tractor. Photo: Mr.choppers · CC BY-SA 3.0
Original: 2024 Mack Anthem 6x4 tractor (Day Cab) in Light Blue, front right.jpg
Western Star 4900 truck. Photo: Jason Lawrence from Boston · CC BY 2.0
Original: Western Star 4900 (15066296554).jpg
Hino 268 medium-duty delivery truck. Photo: Jason Lawrence from New York · CC BY 2.0
Original: Hino 268 PBR delivery truck.jpg
Isuzu NRR medium-duty truck. Photo: Mr.choppers · CC BY-SA 4.0
Original: 2024 Isuzu NRR single-cab truck, front left (Manhattan).jpg