After producing the 4th generation Ram 2500/3500 pickup trucks for over 10 years, Ram introduced their 5th generation of heavy-duty Cummins-powered trucks in 2019. These Ram trucks came with many new features including a modernized body style and a completely redesigned 6.7L Cummins diesel engine. This upgraded 6.7L Cummins made Ram the first diesel truck manufacturer to hit 1,000 lb-ft torque. To produce that amount of power this engine received some major upgrades, from a new block to a new turbocharger and exhaust manifold. Maintaining durability and increasing power over the competition were the main focuses when redesigning the 6.7L Cummins. The new block was constructed using many updated and enhanced parts. The enhanced oil and coolant systems keep the engine cool and properly lubricated, and the upgraded turbo and fuel system significantly improve horsepower and torque.

One of the major upgrades of the 2019 6.7L Cummins was switching from a cast-iron block to a compacted graphite iron block. Using a compacted graphite iron instead of cast-iron provided these Ram 2500/3500 trucks with increased durability and weight reduction. The cast-aluminum pistons feature low-friction rings for added strength and help reduce weight in the rotating assembly. The new connecting rods are made from forged steel instead of powdered metal to handle the increased horsepower and torque. To help prevent head gasket failure, the new 6.7L Cummins has larger diameter head studs to secure the cast-iron head to the block. Inside this engine are revised rocker arms and new maintenance-free hydraulic roller lifters. To keep the engine cool and properly lubricated, a high-volume oil pump and high-performance water pump were added to the 6.7L Cummins. For weight reduction, the new oil pump and water pump were cased in aluminum housings instead of cast-iron. One of the key factors that enabled this new Cummins to produce more power was the modernization of its common-rail fuel system. The new Bosch CP4.2 injection pump and improved fuel injectors could produce 29,000 psi of rail pressure. In 2021 Ram switched back to utilizing the more reliable CP3 Injection pump. Another component that allowed the new 6.7L Cummins achieve 1,000 lb-ft of torque was upgrading the turbocharger. The Holset variable-geometry turbocharger features taller turbine vanes for better exhaust flow, reinforced center bearings, and the ability to produce up to 33 PSI of boost. This new turbocharger is mounted to the 6.7L Cummins with a newly designed exhaust manifold. Instead of mounting the turbo in the center of the engine, this new manifold has the turbo located between cylinders 4 and 5 towards the passenger side tilted downward.

With all the changes to the 2019 and newer Ram 2500/3500 trucks there are still some features that remained the same. The 68RFE and the Aisin AS69RC automatic transmissions are still paired with the 6.7L Cummins engine, but the manual transmission option was discontinued. When paired with the 68RFE 6-speed automatic transmission the 6.7L Cummins is rated at 370 hp and 850 lb-ft of torque. The high-output Cummins paired with the Aisin AS69RC 6-speed automatic transmission has the industry-leading rating of 400 hp and 1,000 lb-ft of torque. As the battle for highest horsepower and torque continued, in 2021 the high-output Cummins remained the highest-ranked diesel at 420 hp and 1,075 lb-ft of torque. The 6.7L Cummins is still offered in Ram 2500/3500 pickup trucks and is supported by many aftermarket manufacturers. Cyberpunk Diesel carries parts from hundreds of the top manufacturers to provide you with all the parts your 6.7L Cummins needs. Perform routine maintenance on your Ram 2500/3500 with the high-quality Fuel Filters, Oil Filters, and Service Fluids available at Cyberpunk Diesel. Customize your truck with a new Lift Kit and Performance Exhaust System. Get the most out of your 2019-2021 6.7L Cummins with all the diesel performance parts available at Cyberpunk Diesel!