Cummins 6C

 A solid, high-torque, low-RPM six-cylinder engine, the Cummins C-Series is found in many over-the-road and industrial applications. Reviva offers engines specific to your applications.  The goal is to provide an engine with little to no modification required at install ensuring you are back on the road faster.

The Cummins 6C/8.3L is used in many on-highway (linehaul & vocational) and off-highway industrial applications.

All Reviva engines are assembled in the USA.

Product Bulletin


To determine correct part number and configurations available, please gather the following information from the valve cover: 

  • Original Engine Serial Number
  • Original Engine CPL

Long Block

  • Block
  • Rods
  • Crank gear
  • Piston assemblies
  • Head
  • Rear cover & seal
  • Oil filter assembly
  • Water pump
  • Oil pan
  • Crankcase breather
  • Thermostat housing
  • Water outlet
  • Gasket set
  • Valve train (lifters, pushrods & rocker arms)
  • Crankshaft
  • Oil pump
  • Cam gear
  • Camshaft
  • Front gear housing
  • Oil cooler
  • Valve cover
  • Gear cover & seal
  • Pick-up tube
  • Thermostat
  • Filters (oil & water)
  • Lifting brackets

Complete Drop-In
all parts on long block plus:

  • Injectors
  • Turbocharger
  • Vibration dampener
  • Fuel filter
  • Injection pump
  • Exhaust manifold
  • Oil filter
  • Fuel Lines
  • Intake cover
  • Water filter

Dynomometer Testing

All of Reviva’s Complete Drop-In engines are 100% dyno tested prior to shipment. Computer controls ensure that each engine dyno test is conducted under standard, repeatable settings. Every engine is run through a warm up cycle; three separate cruise segments simulating light, medium and heavy throttle conditions; maximum torque and horsepower tests; both high and low idle tests; and a black light leak detection test with dyed oil, coolant and fuel.

Warranty Coverage

On-Road Complete Drop-In configurations: 2yr/unlimited mileage.
**2nd year long block coverage only.
Off-Road Long Block and Complete Drop-In configurations: 1yr/2,000 hours.
On-Road Long Block configuration: 1yr/unlimited. Transit applications: 1 year.

Some restrictions apply; see limited warranty details or call for more information.