Industrial Injection 2019–2020 6.7L Cummins Premium Stock Plus Long Block Engine
The Industrial Injection Premium Stock Plus Long Block Engine for 2019–2020 Ram 6.7L Cummins Common Rail trucks provides an upgraded engine foundation for daily driving, towing, and demanding work applications.
Built with a balanced rotating assembly, Industrial Injection X Series coated and chamfered pistons, ARP hardware, and a complete Hamilton Cams Flat Tappet Conversion Kit, this engine combines precision machining with upgraded components selected for durability and dependable operation.
The long block also features an Industrial Injection Premium Stock Plus cylinder head with upgraded valves, valve seats, guides, and springs.
Engine Features
- Remanufactured 6.7L Cummins Common Rail long block
- Balanced rotating assembly
- Sim-tested short block
- Industrial Injection X Series coated and chamfered pistons
- Balanced Cummins crankshaft
- Balanced Cummins connecting rods
- New main and connecting rod bearings
- ARP main studs installed
- ARP connecting rod bolts installed
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Complete Hamilton Cams Flat Tappet Conversion Kit, including:
- Hamilton forged camshaft
- DLC-coated steel flat tappets
- Upgraded pushrods
- Adjustable rocker arms with DLC-coated trunnions
- New engine oil pump
- New engine oil cooler
- New water pump
- Cummins oil pickup tube
- Engine oil pan matched to the application
Cylinder Head Features
- Industrial Injection Premium Stock Plus cylinder head
- Professionally reconditioned and inspected cylinder head
- Custom stainless steel nitride-coated valves
- Premium oversized high-temperature alloy valve seats
- Diamond-honed high-strength alloy valve guides
- New valve springs installed
- Precision cylinder head machining and assembly
- Head gasket and head fasteners matched to the approved engine build
What's Not Included
- Valve cover
- Fuel injectors and external fuel system components
- Turbocharger and exhaust manifold
- Intake manifold and external air-handling components
- Additional engine installation gaskets unless specified
- External engine accessories and installation hardware unless specified
- Engine break-in oil
Important: This product is an assembled long block, not a complete ready-to-install engine. The Hamilton Flat Tappet Conversion Kit is included, including its pushrods and adjustable rocker arms. Additional external components and installation supplies are required.
Recommended Components to Inspect Before Installation
Before installing your rebuilt 6.7L Cummins long block, inspect the supporting components that will be reused. Internal engine failures can leave metal debris, oil contamination, or other damage that may affect the replacement engine.
Industrial Injection recommends inspecting the following components:
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Fuel Injectors: Have injectors tested for proper operation before reuse. Fuel delivery problems can contribute to piston damage, excessive cylinder temperatures, and engine failure.
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Turbocharger: Inspect for excessive shaft play, oil leaks, damaged compressor or turbine wheels, and contamination. Repair or replace damaged components before installation.
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Fuel System: Inspect the high-pressure fuel pump, fuel lines, filters, and related components for wear or contamination. Correct any existing fuel system problems before starting the rebuilt engine.
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Cooling System: Inspect the radiator, thermostat, hoses, EGR cooler, and related components for restrictions, leaks, or contamination. Flush or replace components as necessary.
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Intake and Charge Air System: Inspect the intercooler, intake piping, and charge air connections for debris, oil accumulation, or damage that could affect the replacement engine.
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Valvetrain Installation: Follow the supplied Hamilton Cams Flat Tappet Conversion Kit installation requirements, including proper valve lash, lubrication, and component compatibility.
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Engine Oil System: Inspect and thoroughly clean any reused external oil lines, fittings, and related components. Remove contamination from any previous engine failure.
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Exhaust and Emissions Components: Inspect the exhaust manifold, EGR components, and associated connections for damage, restrictions, or contamination that could affect engine operation.
Important: Always identify and correct the cause of the original engine failure before installing your rebuilt long block. Reusing damaged or contaminated components can lead to repeat engine failure and may affect warranty coverage.
Vehicle Fitment
Designed for the following vehicles equipped with the 6.7L Cummins Common Rail diesel engine:
- 2019 Ram 2500 6.7L Cummins
- 2019 Ram 3500 6.7L Cummins
- 2020 Ram 2500 6.7L Cummins
- 2020 Ram 3500 6.7L Cummins
Fitment Note: This engine is specifically configured for 2019–2020 Ram applications. Engine specifications may vary between Standard Output and High Output configurations. Contact Industrial Injection with your vehicle year, model, and engine information to verify compatibility before ordering.
This part number is not listed for 2021 or newer Cummins engines.
Warranty and Engine Break-In
This engine is covered by Industrial Injection's applicable written engine warranty policy. Warranty registration, proper installation, and required maintenance procedures are essential to maintaining coverage.
Important: The included Hamilton Flat Tappet Conversion Kit has specific lubrication, valve lash, and maintenance requirements. Follow the current engine-specific break-in instructions provided by Industrial Injection, including the approved oil and initial service requirements.
Break-in oil is not included with the engine.
Why Choose Industrial Injection?
Since 1985, Industrial Injection has specialized in diesel fuel systems, turbochargers, and engine components. Our engine-building program combines experienced technicians, precision machining, and carefully selected components to provide dependable solutions for diesel truck owners and repair shops.
From stock replacement engines to upgraded Premium Stock Plus builds, our team understands the demands placed on diesel engines used for towing, work, and everyday driving.
Questions About Your 6.7L Cummins Build?
Contact Industrial Injection to confirm engine compatibility, review the Premium Stock Plus construction, and discuss the components required to complete your installation.
Call 800-955-0476 to speak with our engine specialists.
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