What is a water pump pulley?
A water pump pulley is a pulley within the cooling system that attaches the water pump to the timing belt and is typically driven by a drive belt or serpentine belt.
Although the water pump pulley is a small part of the system, your water pump—which is essential to circulating coolant throughout your car’s engine to cool it off—can’t operate correctly without the pulley providing the necessary power.
When should I replace the water pump pulley in my car?
Signs of a faulty water pump pulley are similar to those of a bad water pump. You should have your water pump pulley checked out by a mechanic if you notice any of the following warning signs:
A lit temperature warning light
A mechanic might also notice damage to the water pump pulley during an oil change or other maintenance.
How often should a water pump pulley be replaced?
Your vehicle’s water pump pulley is meant to last for the vehicle’s lifetime, but they can be damaged or worn out. It’s best to keep an eye out for warning signs of a bad water pump pulley and take your car to a mechanic when necessary.
Can I replace my water pump pulley myself?
If you’re confident in the field of DIY auto repair, you can complete a water pump pulley replacement at home, but the replacement requires specialized tools and you will need to work with various parts of your vehicle. For most car owners, letting a professional handle your water pump pulley is the best plan.