📋 Recommended Interval
Miles
60,000–105,000 miles
Time
7 years
DIY Cost
$150–$400
Shop Cost
$600–$1,500
Use whichever comes first, miles or time. Severe service (short trips, towing, dust, extreme heat or cold) shortens the safe interval by 25–50%.
🧠 Why This Interval Matters
When a timing belt fails on an interference engine, valves slam into pistons. Best case: bent valves and a $2,000 head job. Worst case: a destroyed engine. Prevention is mandatory, not optional.
⚠ Signs You're Overdue
- Ticking or rubbing sound from the front of the engine
- Visible cracks, missing teeth, or oil contamination on the belt
- Engine won't start or misfires after a sudden noise
- Coolant leaking near the timing cover (water pump)
- Mileage past the OEM interval and no record of replacement
What happens if you skip itCatastrophic. A snapped belt on an interference engine is a $3,000–$7,000 mistake.
💵 DIY vs Shop Cost
DIY
$150–$400
Shop
$600–$1,500
Difficulty
Shop only (mostly)
Shop pricing varies by region and vehicle. Independent shops are typically 25–40% cheaper than dealerships for the same work. DIY assumes you have basic hand tools.
🛒 Related Items & Typical Life
| Item | Typical Life | Replace Cost |
|---|---|---|
| Timing belt | 60,000–105,000 mi | $30–$80 |
| Water pump (do it together) | With timing belt | $50–$120 |
| Tensioner and idler kit | With timing belt | $60–$150 |
🔗 Related Guides
❓ Frequently Asked Questions
How do I know if I have a belt or a chain?
Look up your engine. Most engines since 2000 have moved to chains. Notable belt holdouts include older Honda V6s, Subaru EJ engines, and many VW/Audi 2.0L. Chains are typically lifetime.
Is my engine interference or non-interference?
Most modern engines are interference (higher compression, tighter packaging). When in doubt, assume interference and replace on schedule.
Should I do the water pump at the same time?
Always, if the water pump is driven by the timing belt. The labor to access it is 80% of the job, replacing only the belt and then doing the pump again 30,000 miles later is wasteful.
What are the signs of a failing tensioner?
Rattle from the timing cover area, especially on cold start. A failing tensioner can let the belt skip teeth, with the same catastrophic result as a snap.
Can I drive past the recommended interval?
Not safely. The belt can fail at 80,000 or 130,000, but you don't know which. Replace on schedule.
How long does a timing belt job take?
4–8 hours of shop labor on most engines. DIY is possible but requires special tools and timing-mark precision.