Top 9 Best Rated Serpentine Belts & Brands: Gates, ACDelco or Bando (2021 Reviews)

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best serpentine belts

What are the best serpentine belts in 2021? Which one is the most suitable one for your vehicle? I have answers to your questions in this article. 

As you may know, there are three types of belts that control your car’s engine: V-belt, Serpentine Belt, and Timing Belt. The Serpentine belt is one of the essential belts that connect many critical parts, including radiator belts, alternators, water pumps, AC, and more. 

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For this reason, a serpentine one can be the leading cause of the problems related to these parts. On the other hand, replacing it is also a way to create the right conditions for these parts to perform efficiently. And I found that the 9 serpentine belts mentioned below are among the best ones. Let’s check it out! 

ACDelco Professional 6K930...
Bando USA 5PK875 OEM Quality...
Gates K081264HD Serpentine...
ACDelco Professional 6K930...
Bando USA 5PK875 OEM Quality...
Gates K081264HD Serpentine...
ACDelco Professional 6K930...
ACDelco Professional 6K930...
Bando USA 5PK875 OEM Quality...
Bando USA 5PK875 OEM Quality...
Gates K081264HD Serpentine...
Gates K081264HD Serpentine...

Reasons You Need To Buy a Serpentine Belt

1. Upgrade Your Engine 

Are you going to replace your gasket adhesives, head gaskets, or even spark plug? If you are, I advise that you may have to replace all the components surrounding the engine. By replacing the serpentine belt, you will have a practical component in the front part of your car. 

2. Transmit Power 

Do you know why a serpentine belt is so important? It will deliver power to your engine to run other components smoothly. In this case, “other components” mean critical components like a power steering pump, air conditioning unit, alternator, and water pump. 

3. Prevent Engine Failure 

Suppose your serpentine belt has symptoms like wearing or fraying, tearing, and cracking. In that case, all the automotive components will be severely affected. Your engine will be overhead, and your vehicle will stop mid-journey. Hence, you need to replace it before it destroys your vehicle’s engine. 

4. Best Design 

Recently, serpentine belts are among the cheapest and the most durable ones on the market. Compared with fan belts, standard belts, they are more reliable, efficient, and compact. And the most important is it is super simple to install them. 

Factors to Consider When Buying the Best Serpentine Belts 

If you want to make the right investment in the best serpentine belts for your vehicle, you must check the following features: 

1. Belt’s Size 

You can usually find the parameter about the size based on the model number on the belt. It is the most effective way for you to find the best aftermarket size. And you should never choose a different size than this parameter because it could lead to severe consequences for your engine. 

However, it is not all the time that you can find the data. If your belt is too old and can’t read any model number, you can use the manual method: take the belt off and measure the length. In my experience, you should choose one size smaller than the real length to get the best fit. For example, if the measured length is 90 inches, you should buy the 89 to 89.5-inches. 

And the last way for you to find the best size for your vehicle is by carefully reading the car manual (if you still help it). 

2. Material 

The material of the belt will determine its durability and performance. So, the material is the critical factor to consider when buying the best serpentine belts. 

In the past, the most popular material was Neoprene. However, this material often ended up with cracks after a short period. Therefore, it is not the best choice recently. 

By doing pure research on the market, you may find that the most famous material now is Ethylene-Propylene-Diene-Monomer (EPDM). This material is more resistant to wear so that it could last longer than Neoprene. 

3. Compatibility 

Your belt can still be incompatible with your car even when it has a perfect size and material. And that is why you have to check out the compatibility before making a purchase. 

Luckily, it is not too complicated to find out if your car is compatible with the belt or not. Most manufacturers often clearly indicate the exact vehicle models and types for their belts. Everything you need to do is reading the description carefully to make sure that you are not wrong. 

4. Range and Durability 

Firstly, I have to say that no matter how much you pay for your belt, it will wear out after a specific time. However, the durability is not the same because of the material, engine, and size. 

According to engineers, the average lifespan for the standard serpentine belt is about 60,000 miles. However, you can find those that could last for 100,000 miles. 

5. Other Features 


I recommend that you buy the serpentine belts from a reputable brand because they can assure you the quality and durability with a good warranty. Among thousands of brands on the market, I gotta say Bando, ACDelco, and Gates are the most famous. 

Shear Resistant 

The best serpentine belts should have a shear-resistant feature. It is the ability to self-resist structural failures like cracks or shears. The shear resistance is based on the material. And only premium belts have this feature. 

Choose the Rib Pattern

The rib pattern will decide its lifespan. And the best pattern is cross-cut with numerous valleys.  

Top 9 Best Serpentine Belts 2021 Reviews 

#1 Best Overall: ACDelco 6K930 Professional V-Ribbed Serpentine Belt

ACDelco 6K930 Professional V-Ribbed Serpentine Belt

The first item on my list is the ACDelco 6k930 Professional V-ribbed. According to its outstanding material and functional design, I can say that it could be the best product in 2020. 

Firstly, ACDelco uses crack-resistant EPDM rubber to make this product. That is why it could last longer, run quieter, and perform better than the general product. For your more information, it could last 60% longer than the retail belts. 

Secondly, this product has a precision dimension. Hence, it can lead the other components to operate smoothly at their optimal levels. Moreover, it can accept and operate misalignment better than the other belts. It is also very flexible and durable. 

ACDelco Professional 6K930...
  • Made with temperature and crack...
  • Is the belt of choice by...
  • Its precision dimension control of...


  • High-quality material 
  • Precise dimension belt 
  • Ideal for misalignment 
  • Better performance and longer lifespan 


  • It is pricey 

Although ACDelco 6k930 Professional V-ribbed is pricey than the general one, it is always worth to pay some extra money for the best ones to maintain your vehicle’s engine. 

#2 Best in Budget: Bando 5PK875 OEM Quality Serpentine Belt

Bando 5PK875 OEM Quality Serpentine Belt

Suppose you are on a limited budget. In that case, I highly recommend the Bando 5PK875 for you. By paying a minimal amount of money, you will have an excellent quality item for your vehicle. 

What I like most about this product are the strong tensile cords. It allows the belts to carry high engine horsepower without stretching. As a result, it could last longer than the endless belt. Besides, it is made of high-strength synthetic rubber for long life. 

Bando US is a 100-year-old brand in the US. Therefore, you can trust in their experience and believe that they will give you the best products at the most reasonable price. The only minus point of this product is complicated installation requirements. 

Bando USA 5PK875 OEM Quality...
  • 5 ribs x 875 mm or 5 ribs x 34.5...
  • strong tensile cords carry high...
  • award winning oem supplier with...


  • Reasonable price 
  • Long durability 
  • Strong and stretch-resistant belt 
  • Reputable brand 


  • Difficult to install 
  • For only some specific types of cars

Bando 5PK875 is only suitable for some types and models of car, so please check the product’s detail carefully before purchasing. 

#3 Best for Supercharger: Gates K081264HD Serpentine Belt/Fan Belt

Gates K081264HD Serpentine Belt

And the next item is the Gates K81264HD serpentine belt. Firstly, I have to inform you that it is the most expensive one on my list. But once you see and use this, you will understand why it costs you that much. 

Firstly, it is straightforward to install this item. If you have some experience with the car’s engine, you can install it at your garage within 30 minutes. Secondly, it is a thick belt that makes your engine run smoothly with no noise and cracking. 

And last, it is a heavy-duty belt with three available sizes for your car, your vents, and your trucks. However, the thickness makes it hard and not as flexible as the thinner belt. 

Gates K081264HD Serpentine...
  • Patented material provides peak...
  • Heavy-duty construction resists...
  • Special compound provides unmatched...


  • Super simple to install 
  • High quality for the price 
  • Long durability 


  • It is pricey 
  • Not very flexible 

Gates K81264HD is one of the best serpentine belts for people who want to find the best quality product for their vehicle.  

#4 Best for Misalignment: ACDelco 12576447 GM Original Equipment V-Ribbed Serpentine Belt

ACDelco 12576447 GM Original Equipment V-Ribbed Serpentine Belt

Another great choice is the ACDelco 12576447 Serpentine belt. This product is compatible with Cadillac, Chevrolet, GMC, and Hummer. For other brands, please check the dimension carefully before buying. 

Like Bando, ACDelco is a 100-year-old brand that is famous for creating aftermarket accessories. And the serpentine belt is their ideal product. This 12576447 version is the ideal choice for misalignment because it can create a secure point to make better contact with a pulley and deliver better traction. As a result, it allows the engine to run correctly. 

And last, the ACDelco 12576447 is made for fit, function, and form. It is high-quality, durable, and reliable. However, as mentioned, it is not compatible with every vehicle. 

ACDelco GM Original Equipment...
  • Allows for the operation of various...
  • Creates a secure point of contact...
  • Some ACDelco GM Original Equipment...


  • Reputable brands 
  • Better traction for smooth operation 
  • High-quality and durable 


  • Only fit with some brands 

If your car’s engine fits this belt, there is no reason you should not choose ACDelco 12576447

#5 Best for Squeaking: 6PK2240 OEM Quality Serpentine Belt 6PK2240 OEM Quality Serpentine Belt

Bando 6PK2240 is one of the best serpentine belts for squeaking. If you want to remove the squeaking, you need to find a high-quality belt that is flexible enough to run smoothly and hard enough to stand for the engine components. 

Fortunately, Bando 6K2240 can meet all of your requirements. Bando used EPDM rubber and followed the OEM specification to make this product. That is why you can trust this brand. 

This item is compatible with Honda and Acura. If you have another car brand, you should check the size carefully before buying it. 6PK2240 OEM Quality...
  • Fit type: Vehicle Specific
  • Package Dimensions: 2.54 H x 36.322...
  • Package Weight: 0.5 pounds


  • 100-year-old brand 
  • ISO and QS9000 certified 
  • Meet unique requirement 


  • Only available in one size 

If your engine creates squeaking when operating, it is time for you to buy a new Bando 6PK2440, make a replacement, and remove the noise. 

#6 Best for Duramax: Continental 4060930 OE Technology Series Multi-V Belt

Continental 4060930 OE Technology Series Multi-V Belt

Another item that I can’t miss is the Continental 4060930 OE Technology Series Multi-V Belt. This product comes with straight-ribbed construction, which makes it last longer and operate quieter. So many professional technicians recognize this fact. 

The following highlight feature of this belt is precision. It is a 93inches belt that could fit perfectly with your vehicle and function with a right OE pedigree. In reality, it could fit perfectly with a 93.25 to 93.5inches engine.  

And last, it is a heavy-duty belt that is even suitable for trucks. It works amazingly in stopping the squeal. But it is too hard for a technician to install the belts. 

Continental 4060930 OE...
  • Goodyear Engineered Products are...
  • Quiet channel technology features...
  • High-strength tension members allow...


  • Durable and high-quality material 
  • Quiet operation 
  • Precise design 


  • It is pricey 
  • Difficult to install 

If you are looking for the best serpentine belts for Duramax, Continental 4060930 OE Technology Series Multi-V Belt is the best choice for you. 

#7 Best for Toyota Corolla: ACDelco 12626222 GM Original Equipment V-Ribbed Serpentine Belt

ACDelco 12626222 GM Original Equipment V-Ribbed Serpentine Belt

This product is great for your Toyota, here you are the ACDelco 126222 GM serpentine belt. This product has the ideal size and features for your Toyota Corolla

Firstly, it helps to minimize the load on your engine. The durable rubber material allows this item to withstand tension with minimal stretching. I mean, it still gets stretched, but not too much. 

However, what I like most about this product are the non-slip features and durable performance. The endless belts can last for 60,000 miles, but they could last for about 80,000 miles

ACDelco GM Original Equipment...
  • Helps minimize the load on the...
  • Withstands tension without...
  • Multi-ribbed to provide less...


  • Very durable belt 
  • Super simple to install 
  • Compatible with many cars and components 


  • It is pricey 

I recommend ACDelco 126222 GM for people who are finding the best serpentine belts with a comprehensive budget. 

#8 Best for Honda Civic: Gates K060841 Serpentine Belt/Fan Belt

Gates K060841 Serpentine Belt

Are you driving a Honda Civic? If you are, I suggest that you should choose the Gates K060841. Unlike other items from Gates, this product is very reasonable. It has the perfect size and design for your vehicle. 

This item comes with two different sizes for different models. Besides Honda Civic, you can use it for Honda Accord and Odyssey. It is effortless to install and operate it. 

Gates is one of the most popular serpentine belt brands recently. Their products often come with an excellent warranty so you can trust them. 

Gates 6-Groove 84-5/8”...
  • Package Dimension : Length:...
  • Country of Origin: UNITED STATES
  • Model Number : K060841


  • Not very expensive 
  • Made in the USA 
  • Ideal for Honda car 
  • Simple to install 


  • Not very flexible and durable 

Although Gates K060841 is ideal for a Honda car, you should still check its size carefully before buying. 

#9 Most Reviewed: Bando USA 6PK2135 OEM Quality Serpentine Belt

Bando USA 6PK2135 OEM Quality Serpentine Belt

Last but not least is the Bando USA 6PK2135 serpentine belt. Thousands of customers have chosen it because of its reputable brand, high quality, and reasonable price

What I like most about this product is the “run quiet” technology. It is the unique technology of Bando that can produce better gripping and quieter operation for your engine. Besides, it has a strong tensile cord so that it can carry high horsepower without stretching. 

And last, like any other item from Bando, this product is wear-resistant. However, it does not fit with the Mazda car. And it has a weird smell when unboxed. 

Bando USA 6PK2135 OEM Quality...
  • Proprietary “Run Quiet”...
  • Strong tensile cords carry high...
  • Ground rubber ribs are compounded...


  • Reasonable price 
  • High-quality and non-stretching belt 
  • Quiet operation 


  • Not for Mazda 
  • Uncomfortable smell 

Please remember to wear a mask while unboxing and installing Bando USA 6PK2135 because I think its smell is not safe for your health.   

Specification(s) Comparison Table

NameWeight (ounces)Dimension (inches)OEM Part Number
ACDelco 6K9304.846.6 x 0.9 x 0.588932786
Bando 5PK875
0.63415.8 x 4.2 x 0.75 PK 875B, 5PK875B
Gates K081264HD 13.6NAAC602445
ACDelco 12576447 2.48.6 x 3.4 x 0.912576447
Bando 6PK2240714.3 x 3.8 x 16PK2240
Continental 40609307.216 x 6 x 14060930
ACDelco 12626222722.4 x 4 x 1.112626222
Gates K0608411.0113.15 x 4.54 x 1.3K060841


1. How can I choose the best serpentine belts? 

You should choose the length, material, and brands. I showed clear instructions for choosing the best ones in the previous part of this article. Let’s read it carefully. 

2. How expensive is it to replace a serpentine belt? 

It will cost you about $25 to $75 to replace a serpentine belt. However, it could cost you more depending on the service’s location. You can’t replace the belt by yourself, so please choose a reputable garage. 

3. How long do the best serpentine belts last? 

As mentioned, the endless serpentine belts could last for about 60,000 miles. However, the best products could last for 100,000 miles in the best condition. Sometimes you have to adjust the belt because they can be manually tensioned. 

4. Will a new serpentine belt improve performance? 

Yes, of course. A new one with the excellent condition will lead all the other components to run their full capacity and improve your engine performance. 

5. How often should you replace your serpentine belt? 

The ideal time for checking the belt condition is every 50,000 to 60,000 miles. Besides, you should check the belt right away if you hear squealing from your engine. 

Author Picks 

Gates K081264HD Serpentine Belt/Fan Belt
Gates K081264HD Serpentine Belt/Fan Belt

Thank you for reading to the end of this article. I hope that with the information above, you can understand more about the serpentine belt and choose the best ones for your car. 

In my opinion, ACDelco 6K930 deserved to become the best serpentine belt overall. And I highly recommend it to all drivers. In case you don’t worry much about budget, Gates K081264HD is the right choice, too. However, if your budget is limited, you can think of Bando 5PK875 or Bando 6PK2135

Don’t forget to hit back to our home page of Automotive Gearz for more well-researched reviews and auto tips!

DIY: How to Fix a Squeaky Belt

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