An Internal Combustion Engine consists of several important parts, and those are: Cylinder, Cylinder Head, Piston, Piston Ring, Gudgeon pin or Piston Pin, Connecting Rod, Small End and Big End Bearing, Crank Shaft, Cam Shaft, Crank Case,Valves or Ports, Manifold, Push Rod, Rocker Arm, Spark Plug or Fuel Injector, Cooling Jackets or,Fins, and Flywheel