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Item #:
15173509
Dayco 89378 Belt Tensioner
86% of respondents would recommend this to a friend
Item #:
15173509
IMP 77
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Order now and get it around Thursday, October 08
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What Stands Out
Durable Design
Constructed with robust materials, the Dayco 89378 Belt Tensioner ensures longevity and consistent performance, reducing the frequency of replacements and maintenance for users.
Easy Installation
Designed for straightforward installation, the Dayco 89378 Belt Tensioner allows DIY enthusiasts and professionals to save time and effort, enhancing user convenience.
Effective Tension Control
With precise tension management, this tensioner improves engine performance and efficiency, addressing issues like belt slippage and wear, providing superior value compared to competitors.
Product Details
| Brand Name | Dayco |
| Number of Items | 1 |
| Manufacturer | Dayco |
| Item Highlight | Replaces 39185 16620-0S010 16632-0S010 49468 305378 419-318. OE-grade replacement. |
| Unit Count | 1 Count |
| Global Trade Identification Number | 00036687616708 |
| UPC | 036687616708 |
| Included Components | Belt Tensioner |
| Item Type Name | Belt Tensioner |
| Style Number | 89378 |
| Part Number | 89378 |
| Compatible Devices | Car |
| Item Weight | 2.1 pounds (950 grams) |
| Belt Style | Serpentine Belt |
| Color | Black |
| Brand | Dayco |
Who Should Buy?
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DIY Mechanics
Ideal for enthusiasts who perform their own vehicle repairs and seek reliable tensioners for belt replacement.
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Professional Mechanics
Great for professional settings where dependability and high-quality performance are essential for customer satisfaction.
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Vehicle Owners
Suitable for car owners experiencing belt noise or wear, and looking to replace their tensioner for enhanced performance.
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Heavy-Duty Vehicles
Not suitable for heavy-duty applications or vehicles, which require specialized tensioners for higher loads.
Product Description
Dayco 89378 Belt Tensioner
About This Item
Introducing the Dayco 89378 Belt Tensioner - the perfect solution to ensure optimal performance and longevity for your vehicle's belts. When it comes to maintaining the health of your engine, it's essential to have a reliable belt tensioner in place. The Dayco 89378 Belt Tensioner is designed with precision and durability in mind, making it the ideal choice for both DIY enthusiasts and professional mechanics alike.
With its sturdy construction and high-quality materials, this belt tensioner guarantees a secure fit and proper tension for your belts. This not only improves the overall efficiency of your engine but also helps prevent premature wear and tear. The Dayco 89378 Belt Tensioner is easy to install, thanks to its user-friendly design.
Simply follow the manufacturer's instructions and enjoy a hassle-free installation process. Featuring a compact size and lightweight design, this belt tensioner is compatible with a wide range of vehicles, making it a versatile option for any automotive project. Investing in the Dayco 89378 Belt Tensioner means investing in the long-term health and performance of your vehicle.
Don't compromise on quality - choose a trusted brand like Dayco for all your belt tensioning needs. Upgrade your vehicle's belt tensioner today and experience the difference it can make in your engine's performance. Order the Dayco 89378 Belt Tensioner now and enjoy reliable and efficient belt tensioning for miles to come.
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Customer Questions & Answers
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Question:
What is the Dayco 89378 Belt Tensioner used for?
Answer: The Dayco 89378 Belt Tensioner is primarily designed to maintain the right tension on your vehicle's serpentine belt. Proper tension is crucial for optimal performance and longevity of engine components. By ensuring that the belt is neither too loose nor too tight, this tensioner helps prevent belt slippage, excessive wear, and possible failure. For instance, if you notice any unusual noise or erratic performance from your engine, it could indicate that the belt tension needs adjustment. -
Question:
How do I know if my Dayco 89378 Belt Tensioner needs replacement?
Answer: Signs of a failing Dayco 89378 Belt Tensioner include unusual noises such as squeaking or grinding from the engine compartment, wear on the serpentine belt, and visible damage to the tensioner itself. Additionally, if you experience a decrease in engine performance or other belt-driven accessories are not functioning optimally, it's a clear sign that your tensioner may need to be replaced. Regular inspections can help identify issues early, preventing more extensive engine damage. -
Question:
Can I install the Dayco 89378 Belt Tensioner myself?
Answer: Yes, installing the Dayco 89378 Belt Tensioner can be a DIY project if you are comfortable with basic mechanical tasks. You'll need standard tools, including a socket set and wrench, to detach the old tensioner and install the new one. Referencing the vehicle's service manual or online guides can provide detailed instructions. However, if you're unsure or lack the necessary tools, consulting a professional may help ensure the installation is correct. -
Question:
Is the Dayco 89378 Belt Tensioner compatible with all vehicle models?
Answer: The Dayco 89378 Belt Tensioner is specifically designed for certain vehicle models; therefore, compatibility may vary. It's important to check your vehicle's make and model before purchasing. You can find compatibility information in your vehicle’s manual or on the Dayco website. Choosing the correct tensioner for your vehicle ensures optimal performance and avoids potential mechanical issues later on. -
Question:
What materials are used in the Dayco 89378 Belt Tensioner?
Answer: The Dayco 89378 Belt Tensioner is made from high-quality materials designed to withstand the rigors of engine operation. It typically features a robust plastic housing and a durable spring mechanism that maintains belt tension under varying temperatures and loads. This construction not only enhances longevity but also improves performance by ensuring reliable tension on the serpentine belt, which is crucial for the smooth operation of your engine components. -
Question:
What are the benefits of using the Dayco 89378 over other tensioners?
Answer: The Dayco 89378 Belt Tensioner stands out due to its reliability and performance. It is engineered to meet or exceed OEM standards, ensuring a perfect fit and optimal tension. Additionally, with its advanced design, it minimizes noise and vibration, resulting in a smoother engine operation. This can lead to enhanced efficiency and extended life of not just the belt, but also of other components such as the alternator and water pump. -
Question:
How long does a Dayco 89378 Belt Tensioner last?
Answer: The lifespan of the Dayco 89378 Belt Tensioner can vary based on usage, driving conditions, and maintenance habits. Generally, it can last several years if properly maintained and used under regular driving conditions. Factors such as frequent short trips, extreme temperatures, and heavy loads may decrease its life. Regular checks can ensure timely detection of wear and keep your vehicle operating smoothly. -
Question:
What tools do I need to replace the Dayco 89378 Belt Tensioner?
Answer: To replace the Dayco 89378 Belt Tensioner, you'll typically need a few basic hand tools: a socket set, a ratchet, and possibly a torque wrench depending on your specific vehicle. A serpentine belt tool can also be helpful for loosening the belt during installation. Having these tools on hand can streamline the replacement process and ensure everything fits snugly, resulting in better performance. -
Question:
Where can I buy the Dayco 89378 Belt Tensioner in Isle of Man?
Answer: You can buy the Dayco 89378 Belt Tensioner from Ubuy in Isle of Man. Ubuy provides a reliable platform for automotive parts, including the Dayco tensioner, ensuring that you receive a quality product suited to your vehicle's needs.
Dayco Belt Tensioners Editorial Review
The Dayco 89378 Belt Tensioner seems to be a popular choice among customers who have purchased this product. Customers have mentioned that it is a perfect fit for their vehicles, specifically for the 2014 Tundra and the 2007 Toyota Tundra 5.7 V8. They also appreciate the ease of installation, with one buyer mentioning that it was a simple swap. The product has also received positive feedback for solving squeaky bearing issues and eliminating belt squealing. However, there is some confusion regarding whether the whole assembly or just the pulley is included in the package. While one customer mentioned that the package includes both the tensioner and the pulley, another customer stated that Dayco only sends the pulley and not the whole assembly. This discrepancy could be a cause for concern for potential buyers. Overall, the Dayco 89378 Belt Tensioner seems to be a reliable and efficient solution for belt tensioning issues, with many customers experiencing positive results.
Customer Reviews & Ratings
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Pros
- Perfect fit for 2014 Tundra and 2007 Toyota Tundra 5.7 V8
- Easy to install
- Eliminates belt squealing
Cons
- Confusion regarding whether the whole assembly or just the pulley is included in the package
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“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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