Take the 2-minute tour ×
Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. It's 100% free, no registration required.

What items are in the cooling system loop?

I know there's the Radiator, and the Block, but what else?

share|improve this question
This is quite vague: water cooled or air cooled engines? Any particular make? Vehicles from this or the previous century? –  Bob Cross Jan 20 at 4:22

2 Answers 2

up vote 2 down vote accepted

You'll also have the:

  • Cylinder head(s)
  • Water pump
  • Thermostat
  • Heater core

Some cars also have water pipes in the inlet manifold, and some have water-cooled transmission oil coolers.

You've also usually got an expansion tank, but that's not part of the loop itself.

share|improve this answer
So if you could put that list in bulleted form, including radiator, I will accept your answer, Thanks man! –  am6sigma Jan 20 at 15:57
  1. Radiator
  2. Thermostat
  3. Engine Block
  4. Heater Core
  5. Water Pump
share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.