Prevents combustion pressure from blowing by and entering the crankcase

Allow the crankshaft to turn within the connecting rod on a film of oil.

Connects a piston to a crankshaft

Round machined areas of the crankshaft where it is connected to the connecting rods. these areas are finely polished

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

Scrape the excess oil from the cylinder walls for return to the crankcase

Passages for coolant circulation

Heavy wheel containing a rubber vibration dampener

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

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

Connects the engine to the transmission for power transfer. Has teeth mounted around its circumference to engage the starter.

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.

Rocks to open valves

Seal between the cylinder head and the block that seals the combustion chamber and water and oil passages

Machined passages for oil circulation

Refers to the valvetrain components, cylinder heads , intake and exhaust manifolds.

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

Round holes or bores machined into a block in which the pistons travel up and down.

Bushing that attaches the piston to the connecting rod allowing the piston to pivot as needed

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.