Find robust Cummins 8.3L/6C Diesel Engines in Long Block Premium or Complete Drop-In configurations. Ideal for a wide range of on-highway trucks (Ford, Kenworth, Freightliner, Peterbilt, Volvo) and off-highway industrial applications (construction, agriculture, mining, forestry), all proudly assembled in the USA.

Find robust Cummins QSB 4.5L HP Common Rail Diesel Engines in Long Block or Complete Drop-In configurations. Ideal for off-highway construction, material handling, agriculture, and generators, these inline-4 engines are proudly assembled in the USA.

Find robust Cummins M11 10.8L Diesel Engines in Basic Long Block configuration. These inline-6 engines (1994-end of production, including CELECT Plus and ISM variants) deliver 280-500hp for heavy-duty trucks, buses, and industrial applications, all proudly assembled in the USA.

Find powerful Cummins X15 15.0L Diesel Engines (2017-2020, 400-605 HP) in Inline-6 Long Block, Long Block Premium, or Special builds. Ideal for long-haul, vocational trucks, buses, and heavy equipment, all USA assembled with competitive pricing.

Find robust Caterpillar 3126 / C7 7.2L Diesel Engines in Long Block, Long Block Plus, Drop-In, or Electronic Complete configurations. Ideal for 1996+ class 6-8 trucks, buses, vocational, and industrial applications, all proudly assembled in the USA.

Find robust Caterpillar 3406E Diesel Engines in Basic Long Block configuration. Renowned for their reliability and electronic fuel injection, these engines are ideal for heavy-duty trucks and a variety of industrial applications. Final price depends on specific configuration.

Find powerful Caterpillar C15 ACERT Diesel Engines in Long Block configuration. These advanced 15.2L inline-6 engines are ideal for a wide range of industrial equipment and heavy-duty trucks from the 2000s and up, delivering high performance and efficiency.

Find reliable Caterpillar 3306 PC Diesel Engines in Basic Long Block configuration. These 10.5L inline-6 engines, known for their precombustion chamber design, are ideal for heavy-duty trucks, construction, agricultural, and industrial applications. Final price depends on specific configuration.