engines

B7.2

New displacement, same class-leading dependability

Introducing the new Cummins B7.2, a diesel engine that brings state-of-the-art advanced technology to the proven, dependable B-platform for medium-duty and vocational applications. Built on 40 years of data and experience from the legendary B6.7 diesel, the B7.2 will have increased capabilities and options with the power and durability you have come to expect from the B series.

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Power

240 - 340 hp 179 - 254 kW

Torque

650 - 1000 lb-ft 881 - 1356 N•m

Certification

EPA 2027

Product Availability

North America

Applications

Medium-duty Truck

Vocational

School Bus

Transit Bus

Recreational Vehicles

Built for the future

The B7.2 diesel will be automatic engine shutdown and stop-start capable and will offer a compression release engine brake. It will also feature a belt-driven, high-output 48-volt alternator and a new aftertreatment to meet all emissions standards.

The new B7.2 diesel engine will become available in North America starting in January 2027.

Specifications

Horsepower	240 - 340HP (179 - 254 kW)
Peak torque	650 - 1,000 lbs. - ft (881 - 1356 Nm)
Governed speed	2400 rpm
Number of cylinders	6
Bore and stroke	107 mm x 133 mm
Engine weight (dry)	1,359 lbs (616.43 kg)
System weight (dry)	1,607 lbs (727.92 kg)
Aftertreatment weight	248 lbs (112 kg)

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Ratings

Engine rating hp	Peak torque lb-ft	Peak torque speed	Governed speed	Truck / vocational	Refuse	School bus	Shuttle bus	Hybrid bus	Recreational	Emergency vehicle
240	650	1200	2400	✔	✔	✔	✔		✔	✔
260	700	1200	2400	✔	✔	✔	✔		✔	✔
280	750	1200	2400	✔	✔	✔	✔		✔	✔
280	700	1200	2400					✔
300	850	1200	2400	✔	✔	✔	✔		✔	✔
300	1000	1200	2400	✔		✔			✔	✔
320	900	1200	2400	✔	✔	✔	✔		✔	✔
320	1000	1200	2400	✔		✔			✔	✔
340	900	1200	2400	✔	✔				✔	✔
340	1000	1200	2400	✔					✔	✔

Rating subject to change.

B7.2

Applications

Gear Ratio Calculator