Which component connects the pistons to the crankshaft in an engine?

The component that connects the pistons to the crankshaft in an engine is the connector rod, also known as the connecting rod. This critical component plays a vital role in converting the linear motion of the pistons, which occurs during the combustion process, into the rotational motion of the crankshaft. As the pistons move up and down within the cylinders, the connecting rods transfer this motion effectively, allowing for the conversion of fuel energy into mechanical energy that powers the vehicle.

In this context, the other components listed serve different functions within the engine. The intake valve is responsible for allowing the air-fuel mixture to enter the combustion chamber; the exhaust manifold collects exhaust gases from the engine cylinders and directs them out of the system; while the fuel injector delivers fuel into the engine’s intake system for combustion. Each of these components has its specific role, but none of them connect the pistons to the crankshaft.