1. Engine Block or Crankcase: “Frame” of the engine. Holds crankshaft, cylinders, and
pistons. Almost all accessories bolt onto the block.
2. Flywheel: Transfers power to clutch. Also has ring gear for starter to
turn engine. This is not a flexplate, but serves almost the same purpose.
3. Head: Carries camshaft, valves, intake and exhaust ports.
4. Valve Cover: Covers top of head. Frequent source of oil leaks.
5. Oil Pan: Holds motor oil.
6. Freeze Plug: If coolant inside the engine freezes, instead of cracking the
block as it expands, the freeze plugs pop out and can be easily replaced.
May be cause of coolant leaks.
7. Distributor: Sends spark from coil to appropriate sparkplug.
8. Woops, missed one.
9. Water Pump: Pumps coolant throughout the engine.
10. Alternator: Makes electricity, Charges battery.
11. Harmonic Balancer: Bolted onto end of crankshaft. Drives all accessory
12. Idler Pulley or Tensioner: Keeps tension on the belts.
13. Oil Cap: Fill the engine with oil here.
14. Oil Dipstick: Checks oil level.
15. Plenum of Intake Manifold: Air move through here from the throttle body
16. Cam Shaft: Rotates via the timing belt or chain. Opens intake and/or
17. Fuel Injectors: Inject and vaporize fuel into the engine.
18. Injector Pump: Increases pressure of fuel to the fuel injectors. Normally
used only in diesel engines.