Serpentine Belt Replacement Cost
Replace the single belt that drives accessories like the alternator and water pump.
Parts vs Labor
35% / 65%
Typical share of total cost
Labor Time
30 minutes to 1 hour
At a typical shop
Difficulty
Confident DIY
2 of 5
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Common Symptoms
Squealing from the engine bay, especially on startup
Visible cracks or fraying on the belt
Belt has reached 60,000 to 100,000 miles
Power steering or AC stops working
What It Is
One long belt that snakes around pulleys to drive your alternator, power steering pump, AC compressor, and sometimes water pump.
Why It Matters
If it breaks while driving, you lose power steering, AC, and battery charging all at once, and you'll be stranded within minutes.
How to Save Money on Serpentine Belt Replacement
- Have the tensioner inspected at the same time, a weak tensioner kills new belts fast
- This is a very easy DIY job on most cars with a basic socket set
Often Done Together
Shops commonly pair serpentine belt replacement with these jobs to save on overlapping labor:
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Frequently Asked Questions
How long do serpentine belts last?
Most modern belts last 60,000 to 100,000 miles. Inspect for cracks every oil change after 50,000 miles.
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