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How often do you change serpentine belt on Subaru?

The serpentine belt, also known as the drive belt, is a crucial component in Subaru vehicles that helps power various accessories like the alternator, water pump, and air conditioning compressor. Typically, Subaru recommends replacing the serpentine belt every 60,000 to 90,000 miles, or every 5-7 years, whichever comes first.


Understanding the Serpentine Belt's Role


The serpentine belt is a single, continuous belt that winds its way around multiple pulleys, driving several engine components simultaneously. It is called a "serpentine" belt because of its winding, snake-like path through the engine bay. This belt is responsible for ensuring the proper operation of vital systems, such as:



  • Alternator: Generates electricity to charge the battery and power the vehicle's electrical systems.

  • Water Pump: Circulates coolant through the engine to prevent overheating.

  • Air Conditioning Compressor: Provides cooling for the cabin.

  • Power Steering Pump: Assists with steering effort.

  • Cooling Fan: Helps dissipate heat from the engine.


If the serpentine belt were to break or become severely worn, it could lead to the failure of these critical components, potentially causing the engine to overheat, the battery to drain, and the power steering to become inoperable.


When to Replace the Serpentine Belt


Subaru recommends replacing the serpentine belt every 60,000 to 90,000 miles or every 5-7 years, whichever comes first. This is a general guideline, as the actual lifespan of the belt can vary depending on factors such as driving conditions, climate, and maintenance history.


It's important to inspect the serpentine belt regularly for signs of wear, such as cracks, fraying, or excessive tension. If the belt shows any signs of deterioration, it should be replaced immediately to prevent unexpected breakdowns.


Serpentine Belt Replacement Process


Replacing the serpentine belt on a Subaru is typically a straightforward process that can be done by a skilled mechanic or a DIY-inclined owner. The steps generally involve:



  • Locating and accessing the serpentine belt, which is usually located in the front of the engine bay.

  • Loosening the belt tensioner to release the tension on the belt.

  • Removing the old belt and installing the new one, ensuring it is properly routed around the pulleys.

  • Adjusting the belt tension to the manufacturer's specifications.

  • Checking for any signs of wear or damage on the pulleys and replacing them if necessary.


It's recommended to have the serpentine belt replaced by a qualified mechanic, as they have the necessary tools and expertise to ensure the job is done correctly and safely.

How do I know if my Subaru timing belt needs replacing?


Other signs of a malfunctioning Timing Belt (or bad timing chain) may include ticking or clanking noises coming from the front of the engine, the Check Engine light coming on, and excessive engine vibrations.



How long do Subaru serpentine belts last?


50,000 to 100,000 miles
It's not uncommon for a new Subaru serpentine belt to last for 50,000 to 100,000 miles, but this can still vary on factors like the model and trim of your vehicle. However, exposure to heat and friction breaks them down over time.



When to replace serpentine belt subaru outback?


It depends on your driving conditions, how much you drive your vehicle, and whether you're keeping up with other routine maintenance, but typically a vehicle's serpentine belt will last somewhere between 50,000 and 100,000 miles.



Can a serpentine belt last 200 000 miles?


Typically, serpentine belts last anywhere from 50,000 to 100,000 miles. Over time, friction and heat break them down. If you're unsure whether it's time for a serpentine belt replacement, check out the warning signs below, courtesy of the experts at the Cornerstone Ford service department!



How much should it cost to replace a serpentine belt?


between $150 and $250
Of course, like any other rubber component, your car's serpentine belt can eventually wear out. When that happens, you'll want to replace the belt right away to avoid a breakdown and additional repairs. Expect to pay somewhere between $150 and $250 if you want a professional to replace your serpentine belt.



At what mileage should I replace my serpentine belt?


Age and Mileage: Most manufacturers recommend replacing the serpentine belt every 60000 to 100000 miles, but check your owner's manual for specific recommendations for your vehicle. Belt Tension: If the belt is loose or has too much play, it may need to be replaced or adjusted.



Do all Subarus need timing belts replaced?


Although timing belts are critical, there's no need to replace them regularly –unless explicitly recommended in your Subaru owner's manual. Some automakers recommend changing a timing belt between 60,000 and 100,000, others don't. Many of today's timing belts can go 100,000 miles or more without needing to be replaced.



What year did Subaru stop using timing belts?


Subaru engines used belts , except for the boxer ez. 3.6 and diesel engines until about 2011. 2012-up 4th generation Subaru used chains and on newer engines.



What is the average cost to replace a serpentine belt?


Whether you go to the mechanic or do it yourself, replacing a serpentine belt costs $58 to $126. The price of a serpentine belt starts at around $25 and goes up to $75 at most. It typically takes about an hour to replace the serpentine belt, and if you know some car repair basics, you could change the belt yourself.



How do I know if my serpentine belt needs replacing?


Regular visual inspections of the serpentine belt can reveal important information about its condition. If you notice cracks, fraying, or signs of wear on the belt's surface, it's a clear indication that it needs replacement.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.