Engine, timing and cooling
Timing belt replacement: what it costs
How this range is built
| Part of the job | Low | High |
|---|---|---|
| Parts | $120 | $450 |
| Labor: 3 to 7 hours × $125 to $175 an hour | $375 | $1,225 |
| Fees: shop supplies, disposal, diagnostics | $10 | $40 |
| Total, rounded | $500 | $1,725 |
The hourly rate is the BLS Occupational Employment and Wage Statistics, May 2025 average pay for this trade in Boston, $31.54 an hour, times 4 to 5.5 to cover what a shop bills (overhead, tools, insurance, profit). Parts are a band from budget aftermarket to the manufacturer part. Full method.
Not a repair shop, estimates only. Typical range, estimate. Not a quote. Your car, parts and shop change the number.
The rubber timing belt keeps engine valves and pistons in sync and must be replaced on schedule. If it breaks, many engines suffer major internal damage.
What is usually included
- New timing belt
- Tensioner and idler pulleys
- Often the water pump and seals
- Check belts and coolant
- Test run
What moves the price
- Water pump replaced at the same time
- Engine layout, V6 costs more than inline-four
- Seals and pulleys included
- Coolant replacement
Questions to ask before you say yes
- Does this include the water pump and tensioner?
- What's the mileage interval for my car?
- Are seals replaced while it is apart?
- What is the warranty on parts and labor?
Can you do it yourself?
Not recommended as a DIY; a one-tooth timing mistake can destroy the engine.
Shopping for the part? Search car parts on eBay (affiliate link, disclosure). Make sure the part fits your car before buying.
Common questions
When should a timing belt be replaced?
Often every 60,000 to 105,000 miles or 5 to 7 years. Your manual has the exact number, and age matters as well as miles.
What happens if it snaps?
On many engines the valves hit the pistons and cause very costly damage. On others the engine just stops.
Why is the water pump replaced with it?
The pump is behind the belt, so replacing it at the same time saves labor if it fails later.
How much does timing belt replacement cost?
A typical range in Boston is $500 to $1,725. That is an estimate from parts prices, labor hours and the local labor rate, not a quote.
Typical range in 10 metro areas
Only the labor rate changes between cities. Same parts, same hours.
| Area | Typical range, estimate |
|---|---|
| Boston area, Massachusetts | $500 to $1,725 |
| New York City area | $490 to $1,650 |
| Los Angeles area, California | $490 to $1,700 |
| Chicago area, Illinois | $470 to $1,575 |
| Houston area, Texas | $440 to $1,525 |
| Dallas-Fort Worth area, Texas | $440 to $1,525 |
| Phoenix area, Arizona | $460 to $1,550 |
| Atlanta area, Georgia | $470 to $1,575 |
| Miami area, Florida | $440 to $1,550 |
| Seattle area, Washington | $500 to $1,700 |