| A rod that connects the crankshaft to the piston enables the reciprocating motion of the piston to turn the crankshaft. | |
| Automatic transmission fluid | |
| And organic chemical compounds made up of carbon, Coreen and fluorine atoms, usually used in refrigeration. R12 is a CFC. | |
| 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. |