| Usually the top two rings in the piston, they form a seal between the piston and cylinder wall to compress the air fuel mixture in the cylinder. | |
| The system you use to remove excess heat from an engine transfer it to the atmosphere. Includes the radiator, cooling fan, hoses, water pump, thermostat and engine coolant passages. | |
| A cast iron | |
| The lower half of the bearing the saddle. It is removable, as in main cap or rod cap. |