How much does a serpentine belt replacement cost?

Short answer: The national average for a serpentine belt replacement is roughly $154 to $212 before taxes and fees, with labor making up a bit more than half. It’s one of the cheaper jobs under the hood. If your quote is much higher, it usually includes a tensioner or idler pulley, so ask for those as separate lines and what was found wrong with them.

Camille the shop cat winking and pointing the way, a wrench tucked under her arm

Fair price range

Job	Typical total	Labor	Parts	Source
Serpentine belt replacement	$154 – $212	$89 – $130	$65 – $82	RepairPal

Sources: RepairPal national averages, estimates last updated September 3, 2026 (checked October 30, 2026). Totals exclude taxes and shop fees and don’t reflect your location; your vehicle, region and shop can put you well outside these ranges.

We don’t quote a national number for tensioners and idler pulleys, because they vary a lot by engine. RepairPal suggests checking them for bearing wear while the belt is off, and checking the pulleys if a fairly new belt shredded or came off, since a worn pulley can ruin a new belt quickly.

What drives the price

Engine layout. Engines mounted sideways (most front-wheel-drive cars) can leave little room to reach the belt, which adds time.
Tensioner and pulleys. A worn automatic tensioner or noisy idler pulley adds parts and labor.
Belt quality. RepairPal notes that higher-quality belts are less likely to squeak or fail early.
The cause. A coolant or oil leak that soaked the belt has to be fixed too, or the new belt will slip and wear out.

What’s normal, and what’s worth questioning

Replacing a belt that shows cracks, missing chunks or a worn tensioner gauge is normal.
Inspecting the tensioner and idler pulleys while the belt is off is good practice.
Replacing a pulley or tensioner that’s noisy, wobbles or has rough bearings is reasonable.
Worth questioning: a full belt, tensioner and pulley kit with nothing described as worn, or a belt quoted only because of squealing after driving through water (RepairPal notes that can happen without damage).

Do it yourself

Handy with tools? Here’s roughly what the parts cost if you do the work at home. Example vehicle: 2015 Toyota Camry 2.5L; prices checked October 30, 2026.

Part	Parts price	Notes	Source
Genuine Toyota serpentine belt, part 90916-A2021	$26 – $30	Online dealer prices from two sellers; confirm fitment by VIN	Toyota Parts Now

Parts only, before tax and shipping. Prices change often and vary a lot by vehicle; look up your exact year, engine and VIN.

Difficulty: Easy to moderate on many cars; harder where the engine sits sideways with little room, or where a special tool is needed to release the tensioner.
Time: Roughly 30 minutes to 1 hour on an easy layout.

Tools you’ll likely need

Serpentine belt tool or a long-handled ratchet to release the tensioner
Socket set
A photo or the belt routing diagram (often on a sticker under the hood) before you remove the old belt
Flashlight

Where to buy parts

Online aftermarket: RockAuto (wide choice, often the lowest prices; shipping takes a few days).
Local parts stores: AutoZone, Advance Auto Parts, O’Reilly and NAPA (same-day pickup, easy core returns, and many test your old part free).
Genuine (OEM) parts: your dealer’s parts counter, or the carmaker’s online parts store (for example Mopar, GM Genuine Parts, Ford Parts or Toyota Parts), searched by your VIN.
European cars: brand specialists like FCP Euro (BMW, VW, Audi, Volvo, Mercedes) carry OEM and OE-supplier parts.

Watch how it’s done

Search YouTube for “serpentine belt replacement” videos → Add your year, make and model to the search for a closer match. Watch two or three before you start, since video quality varies.

At your own risk. Disconnect the negative battery cable before you start, work on a cool engine, and never work under a car held up only by a jack. If anything doesn’t match the video or feels unsafe, stop and call a shop. This is general information, not professional instructions.

Questions to ask the shop

What did you see on the belt: cracks, chunks missing, glazing, or fluid on it?
Is the tensioner or any pulley actually worn? How did you check it?
If the belt is soaked with oil or coolant, where is the leak coming from, and is that fix in this quote?
Is the belt an OEM or a quality aftermarket brand?
If I only do the belt today, is anything else urgent?

Frequently asked questions

What does a bad serpentine belt sound like?

Often a squeal or chirp, especially at startup, in wet weather or when the AC kicks on. A rhythmic chirp or a growl can also come from a worn tensioner or pulley rather than the belt itself.

What happens if the serpentine belt breaks?

On most cars it drives the alternator, power steering pump and AC, and often the water pump. If it breaks you can lose charging, power steering and engine cooling, so pull over safely and don’t keep driving if the temperature gauge climbs.

Should I replace the tensioner with the belt?

Only if it’s worn. Many tensioners have a wear indicator, and a shop can check the pulley bearings while the belt is off. Ask what they found before agreeing to it.

Is a serpentine belt the same as a timing belt?

No. The serpentine belt is on the outside of the engine and runs accessories like the alternator. A timing belt sits inside a cover and keeps the engine’s valves in time, and replacing it is a much bigger job.

Related guides

Sources

Also worth checking: open recalls on your vehicle (NHTSA, above) before paying for a repair. A recall repair is free at a dealer.

General information from someone with automotive sales and service-writer experience, not professional mechanical advice and not a substitute for an inspection by a qualified technician. Cost ranges are national averages from the sources listed and vary by vehicle, region and shop.