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Description
Fits 2014-2016 Mazda 6 Automatic Serpentine Belt Tensioner Assembly 55721Goodyear 55721 Automatic Serpentine Belt Tensioner Assembly Goodyear's automatic tensioners and pulleys are meticulously designed to offer complete support to an engine's belt drive system. In today's modern engines, the belt drive system plays a critical role in transferring power from the engine's crankshaft to essential accessories, ensuring smooth and comfortable vehicle operation on the road. Over time and with high mileage, engines can
Goodyear 55721 Automatic Serpentine Belt Tensioner Assembly
Goodyear's automatic tensioners and pulleys are meticulously designed to offer complete support to an engine's belt drive system. In today's modern engines, the belt drive system plays a critical role in transferring power from the engine's crankshaft to essential accessories, ensuring smooth and comfortable vehicle operation on the road. Over time and with high mileage, engines can experience decreased efficiency due to factors like worn ball bearings, improper tension, and misalignment in the belt drive system. To maintain optimal performance and prevent potential issues, it's essential to install Goodyear automatic belt tensioners and pulleys.
Features:
- Goodyear belt tensioners and pulleys are precision-engineered to match the specifications and requirements of the vehicle's belt drive system. This ensures a perfect fit and optimal performance.
- Feature automatic tensioning mechanisms that continuously adjust the belt tension as needed, maintaining optimal tension levels under varying operating conditions.
- Goodyear belt tensioners and pulleys are constructed using durable materials such as steel, aluminum, high-strength polymers, and advanced coatings to withstand the rigors of daily driving.
- Goodyear belt tensioners and pulleys utilize advanced bearing technology, such as sealed bearings and low-friction designs, to reduce wear, noise, and vibration.
- Maintaining proper belt tension and alignment, tensioners and pulleys optimize the performance of the entire belt drive system, including accessories like alternators, power steering pumps, and air conditioning compressors.
Interchange Part Number:
- PE03-15-980A; PE03-15-980B; PE7W-15-980; 39390;
Specs:
| Belt Type | Serpentine |
|---|---|
| Grade Type | OE Performance |
| Housing Material | Steel/Aluminum |
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2014-2016 | Mazda | 6 | |
| 2018-2021 | Mazda | 6 | |
| 2012-2013 | Mazda | 3 Sport | |
| 2012-2013 | Mazda | 3 Sport | |
| 2012-2013 | Mazda | 3 Sport | |
| 2014-2022 | Mazda | 3 Sport | |
| 2021-2022 | Mazda | 3 Sport | |
| 2013-2017 | Mazda | CX-5 | |
| 2014-2023 | Mazda | CX-5 | |
| 2012-2013 | Mazda | 3 | |
| 2012-2013 | Mazda | 3 | |
| 2012-2013 | Mazda | 3 | |
| 2014-2018 | Mazda | 3 | |
| 2021 | Mazda | 3 | |
| 2014 | Mazda | 3 | |
| 2019-2022 | Mazda | 3 | |
| 2016-2021 | Mazda | CX-3 | |
| 2020-2022 | Mazda | CX-30 | |
| 2016-2022 | Mazda | MX-5 Miata | |
| 2023 | Mazda | CX-50 | |
| 2016-2022 | Mazda | CX-9 | |
| 2016-2022 | Mazda | MX-5 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 4
Awesome
Size: 32 oz
Works as advertised. Just don't scrimp... give it the full recommended amount in each tire
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Reviewed in the United States on May 27, 2026
★★★★★ 5
This tire sealant works very well
Size: 16 oz
So far so good.
Cheaper and easier that tubing a leaking tire
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Reviewed in the United States on May 24, 2026
★★★★★ 3
Hard to install as instructed.
Size: 32 oz
Nearly impossible to get it in the tire through the valve. Yes I removed the valve core.
Broke the bead on the tire and dumped it in. That worked great! So far no leaks.
They should definitely redesign the installation method.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Been using it for 15 years! Not sure where the Neg reviews come from?
Size: 16 oz
I've been using Liquitube since around 2010. I use it religiously in my ATVs and lawn tractor tires. Since I've been using this stuff, I've never had a flat before. I've pulled out nails and slivers of steel out of my ATV tires but yet none of them lose air or go flat.
I think some of the negative reviews come from improper use of the product or not enough of the product is being used in the tires. I think this come from variance in formula charts that Liquitube has had in the past on their bottles and on their website. The chart on their website wouldn't match the formula that was provided on the bottle. So I think alot of people get mixed up and not knowing the correct amount to add to each tire. Now Liquitube just puts pictures on the side of the bottle with an ounce measurement below each picture to tell people how to use it. But even that can be confusing. For instance, take the picture of the ATV that they show. Below the ATV it says 32oz. Now some people probably think the 32oz is for the entire ATV. Well that isn't the case. They want you to use 32oz Per Tire! Years ago Liquitube even used to say on the bottle to use 32oz per tire on an ATV. Now they just show a picture with an amount below it.
Now you'll come to find out that the 32oz they recommend doesn't match up to the formula they tell you to use to calculate how much each tire is supposed to get. So if you use the formula provided, you come to find that it calculates out to use less product per tire than what the bottle tells you to use. So that's very confusing as well.
So if you use it long enough, you'll be able to know how much each tire will need from experience. Just make sure there's enough on the inside of the tire to coat the entire inside as well as leaving a bit left over to circulate in the tire so it can be ready for a large puncture if that ever happens.
All in all, it's a good product that does what it claims. It lasts for as long as the tire does and it doesn't freeze up in the cold either! 5 stars!
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Reviewed in the United States on February 13, 2026
★★★★★ 5
Worked on slow leak… one month already!!!
Style: 18oz
Edit: Still holding proper pressure at 2-months !!!
Had a slow leak where my tire went from 44psi to ~18psi over 2-3 days… Dashboard light would let me know every few days that I had a tire problem and I would inflate the tire back up to 44psi… Anyway, I used this product and filled air back to 44 psi and it’s held the pressure for a month already !!!! Be sure to deflate tire to ~15 PSI before adding the product… it only took about 30 seconds to empty the container into my tire with the tire pressure low. Very happy with this product !!!
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Reviewed in the United States on April 6, 2026