Which of the following is not a basic part of an engine bottom end?

Engine block used in many late-model vehicles due to its lighter weight, ability to increase fuel economy, and better heat dissipation properties than a cast iron block

Connects a piston to a crankshaft

Bolts to the top of the block covering the tops of the cylinders.

Acts as a gate to either let air and fuel into the combustion chamber or let exhaust gases out.

Small pockets above the pistons where air-fuel mixture ignites.

Transmits the downward force through the connecting rods to the crankshaft, causing it to turn.

Installed in grooves near the top of a piston. Designed to form a moving seal between the piston and cylinder wall.

Consists of the block, crankshaft, main bearings, caps, connecting rods, and pistons along with other components.

Heavy metal casting usually made of iron or aluminum. Holds the lower parts of an engine together and in place.

Iron or steel shaft that converts the up and down motion of the pistons into a rotating motion that can be transmitted to the drivetrain.

Holds the crankshaft in place in the block allowing the crankshaft to turn on a thin film of oil.