Timing Belt Kits: Why Replacing Every Component Matters for Long-Term Savings

Timing belt kits include more than just the belt itself – ensuring you replace all components together is key to avoiding costly repairs down the road. Doing it right the first time can save you time, money, and headaches.

What Other Components Should You Always Replace When Doing A Timing Belt?

When replacing a timing belt, you should also replace:

• Tensioner – Maintains the proper tension on the belt. A failing tensioner can cause slack, even on a brand-new belt, leading to belt slip or failure.
• Idler Pulleys – These guide the belt and ensure smooth operation. Worn pulleys can cause premature wear on a new belt.
• Water Pump (if driven by the timing belt) – In many vehicles, the water pump is powered by the timing belt. When it eventually fails, you’ll have to tear everything apart again, doubling labor costs.

Replacing the full kit – belt, pulleys, and tensioner – ensures longevity and prevents premature failure of new components. Replacing your water pump along with the timing belt is good practice, and GMB offers a kit that includes a water pump as well.

What Are The Benefits Of Replacing The Timing Belt?

Replacing a timing belt on time prevents catastrophic engine damage. If a belt snaps in an interference engine, the pistons can crash into the valves, leading to costly repairs or a total engine replacement. And if you’re wondering, most modern engines are interference engines. Other benefits include:

• Improved engine reliability
• Smoother operation
• Prevents sudden breakdowns
• Saves money in the long run by avoiding major repairs

How Do You Prolong The Life Of A Timing Belt?

To extend the lifespan of your timing belt:

• Replace the tensioner and pulleys to prevent undue stress on the belt.
• Check for oil leaks – oil contamination weakens the belt material.
• Avoid excessive engine revving, which strains the belt.

Is Timing Belt Replacement Really Necessary?

Yes. Timing belts are made of reinforced rubber, which deteriorates over time. Ignoring replacement can lead to complete engine failure. If your vehicle has an interference engine, a snapped belt can cause thousands of dollars in damage. Even in non-interference engines, a broken belt means a dead car and an expensive tow. Read more on the high cost of putting off timing belt replacement here.

Does Changing The Timing Belt Improve Performance?

A new timing belt won’t add horsepower but will restore lost efficiency. A worn belt can stretch under load slightly, affecting engine timing and fuel economy. A fresh belt and pulley ensures:

• Proper engine timing for optimal combustion
• Consistent power delivery
• Reduced risk of engine misfires

How Much Does A Timing Belt Cost?

The cost of a timing belt varies based on the vehicle and whether you buy an individual belt or a complete kit. Timing belts are typically under $100, while a timing belt kit (belt, tensioner, idler pulleys) can cost several hundred. Budget for a few hundred more if you need a water pump as well.

Labor costs can vary widely, sometimes into the thousands. They vary based on whether a dealer or independent garage does the work, as well as the complexity of the job. The time required varies by vehicle. A small 4-cylinder engine with easy engine bay access can take as little as 2 hours. Larger and more complex engines can require up to 10 hours of labor. On certain vehicles, accessing the timing belt may require the engine to be partially or entirely removed.

Can I Replace A Timing Belt Myself?

Timing belt replacement is a complex job requiring some level of mechanical ability. If you’re an experienced DIYer with the right tools, you might attempt it, but for most people, professional installation is recommended. Mistakes can lead to serious engine damage.

If you do want to tackle it yourself, be sure to buy a complete timing belt kit from GMB to ensure you have everything needed for a proper replacement. Read here to find out more on how to stop a new timing belt from squeaking.

Where Should I Buy A Timing Belt?

For guaranteed quality and long-lasting performance, buy from a trusted supplier like GMB that offers OE-quality replacement parts. Our timing belt kits include premium components designed to work together for maximum durability and reliability. Unlike generic brands, our kits meet or exceed OEM standards, ensuring a perfect fit and long service life.

Why Should The Timing Belt And Idler Pulley/Tensioner Be Replaced Together?

Each of these components wears at the same rate. A new belt on worn pulleys or a failing tensioner can cause premature failure. Common issues include:

• Excess tension causing belt stretch or breakage
• Loose tension leading to skipped timing and engine misfires
• Worn pulleys creating uneven wear on the belt
• Premature belt failure due to uneven tension
• Sudden tensioner failure, which can lead to major engine damage

Replacing everything together saves labor costs and ensures a longer-lasting repair. For peace of mind, always replace the entire timing belt kit.

What Are The Signs That I Need To Replace My Timing Belt?

Watch for these warning signs:

• Ticking noise from the engine – A worn belt can make a ticking sound as it deteriorates.
• Engine misfires – A stretching belt throws off engine timing.
• Oil leaks – Leaks from the timing cover area can weaken the belt.
• Check engine light – A faulty belt or tensioner can trigger engine error codes.
• High mileage – If you’re near or past the recommended interval, don’t wait, get the belt, pulley and tensioner replaced.

For a deep dive into the symptoms of timing belt tensioner failure, read here.

How Often Should I Replace My Timing Belt?

Most manufacturers recommend replacement between 60,000 and 100,000 miles, or every 5 to 7 years. Always check your vehicle’s owner’s manual for specific intervals. If you’re unsure, it’s better to replace it sooner rather than risk engine damage. If you have purchased a used vehicle and are unsure of when its timing belt was replaced, it is best to get it done straight away.

If you are a parts supplier, distributor or shop owner, read here about how to educate your customers on timing belt tensioner replacement.

Choose GMB For Your OEM-Quality Timing Belts

Timing belt replacement is an essential part of vehicle maintenance. Skipping or delaying it can lead to severe engine damage and costly repairs. To ensure long-term reliability, always replace the belt, tensioner, and pulleys together. In vehicles where the water pump runs off the timing belt, this component should be replaced, too.

If you suspect an issue with your timing belt or need a quality replacement, check out our catalog or contact our team for expert advice!