What component allows oil to flow to the pin and piston in an engine?

The connecting rod plays a crucial role in the movement and function of the engine components by transferring the motion of the piston to the crankshaft. However, it is not the component responsible for allowing oil to flow to the pin and piston.

The oil pump is the correct component that facilitates the circulation of oil within the engine. It ensures that oil is delivered under pressure to various engine parts, including the piston and the connecting rod. This lubrication is vital for reducing friction, cooling the engine parts, and maintaining proper functionality. The oil flows from the oil pump into the oil passages that lead to the piston and connecting rod, allowing for effective lubrication and ensuring the longevity of engine components.

The cylinder head primarily seals the combustion chamber in the engine, and the piston ring's main function is to create a seal between the piston and the cylinder wall, preventing the escape of gases during combustion. Both serve significant roles in engine operation but do not facilitate oil flow directly to the pin and piston. Thus, focusing on the functionality of the oil pump clarifies the correct answer regarding oil delivery in the engine system.