Which part of the engine is responsible for lubricating the crankshaft and connecting rods?

The oil pump is crucial for lubricating the crankshaft and connecting rods in an engine. Its primary function is to circulate engine oil throughout the engine, ensuring that all moving parts are adequately lubricated. This oil reduces friction between the moving components, helps maintain optimal operating temperature, and removes contaminants from the engine, contributing to overall engine health.

In the context of engine components, the oil pump draws oil from the oil pan and pushes it through oil passages to various parts, including the crankshaft bearings and connecting rods. This delivery system is essential for preventing wear and tear, allowing the engine to operate smoothly and efficiently.

While other components mentioned in the options have their own specific roles—such as cooling systems, fuel delivery, and temperature regulation—they do not directly contribute to the lubrication process as the oil pump does.