Vocational Truck Engines

Vocational Truck Engines: Tough Engines for Tough Jobs

Vocational trucks don’t have it easy. Whether you’re working with refuse trucks, concrete mixers, dump trucks or other vocational applications, your equipment works harder than the average over-the-road trucks. No matter what task your trucks face, Cummins has a broad range of engines engineered to meet their horsepower and torque needs.

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Designed to Give You Maximum...

Uptime

Cummins’ competitive maintenance intervals and legacy of reliable products ensure your operations won’t be disrupted by unplanned downtime.
Performance

No matter the terrain or duty cycle, Cummins can meet your power and torque needs with a broad range of 200–500 hp and 520–1,700 lb.-ft. of torque.
Power of Choice

Cummins offers a range of both diesel and natural gas options for vocational applications, giving you the flexibility to choose the fuel that makes sense for your operations.
Lifetime Value

Cummins engines are engineered to keep your workhorses working for decades, maximizing their lifetime value.

An Engine to Meet Every Need

No matter your duty cycle, Cummins has you covered with a wide variety of engines designed to meet your needs.

X12

Heavy-duty engine (350–500 hp)

Lightest in its class, with highest power-to-weight ratio of any 10–16 L engine

75K oil drain interval for light-duty cycles, with up to 100K mile interval using the OilGuard program

Variety of transmission options

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B6.7

Medium-duty engine (200–360 hp)

One of the most versatile and flexible engines available

Covers more 6-7 truck power requirements than any other engine on the market

Lightweight yet durable

Variety of transmission options

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L9

Medium-duty engine (260–380 hp)

Highest power density in its class

Lightweight yet durable, heavy-duty design excels in severe duty cycles

Replaceable wet liners make it easy to maintain and overhaul the engine if needed

Variety of transmission options

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B6.7N

Medium-duty natural gas engine (200–240 hp)

Sets the standard for natural gas engine performance and reliability

Exceeds Environmental Protection Agency Greenhouse Gas emission standards, delivering NOx levels 90% below current requirements

Maintenance-free and fluid-free exhaust treatment system

Doesn’t require radical changes in vehicle technology

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L9N

Medium-duty natural gas engine (250–320 hp)

Sets the standard for natural gas engine performance and reliability

Exceeds Environmental Protection Agency Greenhouse Gas emission standards, delivering NOx levels 90% below current requirements

Maintenance-free and fluid-free exhaust treatment system

Doesn’t require radical changes in vehicle technology

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ISX12N

Heavy-duty natural gas engine (320–400 hp)

Sets the standard for natural gas engine performance and reliability

Exceeds Environmental Protection Agency Greenhouse Gas emission standards, delivering NOx levels 90% below current requirements

Maintenance-free and fluid-free exhaust treatment system

Doesn’t require radical changes in vehicle technology

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Added Protection for Peace of Mind

Cummins has the best warranty and extended coverage plans in the industry backed by the largest and most capable support network in North America. You can rest assured, Cummins offers the best protection for your engines.