Connecting rods are essential components in an internal combustion engine, connecting the piston to the crankshaft. They transfer the force generated during combustion from the piston to the crankshaft, converting linear motion into rotational motion.

In the context of engines and machinery, sleeves (often called cylinder sleeves or liners) are components that line the interior of the engine’s cylinder. They provide a durable, replaceable surface for the piston to move within, protecting the cylinder from wear and reducing friction.

The main fuel pump is a critical component in an internal combustion engine’s fuel delivery system. Its primary function is to pump fuel from the fuel tank to the engine’s fuel injectors at the required pressure for optimal combustion.

A fuel lifting pump is a crucial component in the fuel system of diesel engines, designed to move fuel from the tank to the primary fuel pump or fuel injection system. It ensures that fuel is consistently supplied to the engine, maintaining the necessary pressure for proper combustion.