Cummins 6.7L Turbo Diesel (2021)

Power 370 - 420 hp
276 - 313 kW

Torque 850 - 1075 lb-ft
1152 - 1458 N•m

Certification EPA 2020

In 2019, we celebrated a 30-year partnership with RAM truck that started with the Cummins 5.9L Turbo Diesel in model year 1989.

The 2021 6.7L Cummins Turbo Diesel brings to the table even more horsepower and torque while maintaining the diesel’s historic durability and efficiency.

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Applications

Pickup Truck

Available Regions

US and Canada, Russia / CIS, Africa & Middle East, Mexico, Philippines, Singapore, Brazil, Bolivia, Uruguay, Paraguay, Argentina, Colombia, Central America, Europe, Korea, Japan

Overview:

HD pickup buyers can get an impressive 1,075 lb-ft of torque. This high-output (HO) rating is offered exclusively in the RAM 3500 equipped with the Aisin transmission option. The new high-output engine boasts 420 hp and 1,075 lb-ft of best-in-class torque.

For RAM 2500 and 3500 (equipped with a 68RFE Auto) HP and torque have increased to 370 hp and 850 lb-ft to provide the right power for these models.

	High Output	Standard Output
Horsepower	420	370
Torque	1,075	850
Displacement	6.7L	6.7L
Number Of Cylinders	6	6
Bore	107 mm (4.21 in)	107 mm (4.21 in)
Stroke	124 mm (4.88 in)	124 mm (4.88 in)
Compression Ratio	16.2 :1	19 :1
Engine Wet Weight	1,070 lbs	1,071 lbs
Aspiration	Turbocharged and Charge Air Cooled	Turbocharged and Charge Air Cooled
Fuel System	Bosch HPCR	Bosch HPCR

Model	Transmission	Horsepower (hp)	Torque (lb-ft)
RAM 3500	Aisin Auto	420	1,075
RAM 3500	68RFE Auto	370	850
RAM 2500	68RFE Auto	370	850

Oil Change Indicator System — Cummins Diesel

Your vehicle is equipped with an engine oil change indicator system. This system will alert you when it is time to change your engine oil by displaying the words “Oil Change Due” in your instrument cluster display. The engine oil change indicator system is duty cycle based, which means the engine oil change interval may fluctuate depending on your personal driving style. Failure to change the engine oil per the maintenance schedule can result in internal engine damage.

An authorized dealer will reset the oil change indicator message after completing the scheduled oil change. If a scheduled oil change is performed by someone other than an authorized dealer, the message can be reset by referring to the steps described under “Instrument Cluster Display” in “Getting To Know Your Instrument Panel” for further information.

Replace the engine oil and oil filter every 15,000 miles (24,000 km) or 12 months, or sooner if prompted by the oil change indicator system. Under no circumstances should oil change intervals exceed 15,000 miles (24,000 km) or 12 months, whichever comes first.

Note:

Under no circumstances should oil change intervals exceed 15,000 miles (24,000 km) or 12 months or 500 hours, whichever comes first.
It is recommended that every 3,000 miles (4,800 km), check the engine oil level at least 30 minutes after a fully warmed engine is shut off. Checking the oil level while the vehicle is on level ground will improve the accuracy of the oil level reading. Add oil only when the level is at or below the ADD or MIN mark.
Severe service (high ambient temperature, short trips, heavy loading, trailer towing, off-road, or law enforcement use) may reduce oil change intervals.

In ambient temperatures above 0°F (-18°C), we recommend you use 10W-30 engine oil that meets the manufacturer Material Standard MS-10902 and the API CK-4 engine oil
category is required. Products meeting Cummins® CES 20081 may also be used. The identification of these engine oils is typically located on the back of the oil container.

In ambient temperatures below 0°F (-18°C), we recommend you use 5W-40 synthetic engine oil that meets the manufacturer Material Standard MS-10902 and the API CK-4 engine oil category is required.

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