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

The component that connects the crankshaft to the camshaft is the timing chain. This connection is essential for the synchronization of the engine's internal components. The timing chain ensures that the camshaft rotates in coordination with the crankshaft, allowing the engine valves to open and close at the correct times during the combustion cycle. This synchronization is crucial for optimal engine performance, as it affects the intake and exhaust timing, which directly impacts engine efficiency and power output.

The timing chain is typically made of metal links and is more durable than other components that could serve a similar function. It is designed to withstand the high levels of stress and heat present in the engine environment.

In contrast, the timing belt is a similar component that serves the same purpose, but it's made of rubber and has a different longevity and maintenance characteristic. The fuel rail is responsible for distributing fuel to the engine's injectors, while the oil pump circulates oil throughout the engine for lubrication and cooling, neither of which connect the crankshaft to the camshaft.