Subaru WRX STI Serpentine Belts

Your Subaru WRX STI will be happy to know that the search for the right Serpentine Belts you’ve been looking for is over! Advance Auto Parts has 5 different Serpentine Belts for your vehicle, ready for shipping or in-store pick up. The best part is, our Subaru WRX STI Serpentine Belts start from as little as $15.79.

When it comes to your Subaru WRX STI, you want parts and products from only trusted brands. Here at Advance Auto Parts, we work with only top reliable Serpentine Belts brands so you can shop with complete confidence. Some of our top Serpentine Belts brands are Dayco and Driveworks. We’re sure you will get the right product to keep that WRX STI running for a long time.

We even have reviews of our OEM and aftermarket Serpentine Belts products to help you buy with confidence. Hear from other customers via the 1,008 reviews on parts for your Subaru WRX STI.

Shop online, find the best price on the right product, and have it shipped right to your door. If you prefer to shop in person for the right Serpentine Belts for your WRX STI, visit one of our local Advance Auto Parts locations and you’ll be back on the road in no time!

Compare 25 Subaru Serpentine Belts

Driveworks – Poly Rib Belt Serpentine Belt; 37.8 Long, 4 Rib Count (Part No.378K4)

Poly Rib Belt Serpentine Belt; 37.8 Long, 4 Rib Count

from

$25.99
The Driveworks belt is designed to provide better belt-to-pulley contact. The specialized rubber compound incorporates a high temperature polymer formulated to maximize load carrying requirements and belt life. This Driveworks ribbed belt has been constructed and engineered to meet the stringent demands of today’s automotive drive systems. The Driveworks ribbed belt delivers long-lasting dependable belt life.

Product Features:
  • Constructed with heat and ozone resistant EPDM rubber
  • Fiber is added to the rib stock to reinforce the rubber and reduce noise from worn and misaligned pulleys
  • Made with treated polyester cord to reduce belt stretch
See More

Dayco – Poly Rib Belt Serpentine Belt; 77.1 Long, 6 Rib Count (Part No.5060770)

Poly Rib Belt Serpentine Belt; 77.1 Long, 6 Rib Count

from

$35.99
Constructed with aramid reinforced EPDM compounds, the Dayco poly-V serpentine belt delivers  more than just OE quality. Developed through extensive laboratory and road testing, the rib profile in this EPDM belt has been engineered to conform to high mileage, worn or misaligned drives and helps eliminate noisy belt conditions. Dayco poly rib serpentine belts offer extensive flexibility and longer service life, while handling higher workloads and temperatures.

Product Features:
  • Provides full coverage for today’s light-duty vehicle market, especially vehicles with troublesome drives
  • Engineered to help address noise issues caused by the belt drive 
  • Capable of handling more extreme temperatures and workloads
See More

Dayco – Poly Rib Belt Serpentine Belt; 33.27 Long, 4 Rib Count (Part No.5040333)

Poly Rib Belt Serpentine Belt; 33.27 Long, 4 Rib Count

from

$35.99
Constructed with aramid reinforced EPDM compounds, the Dayco poly-V serpentine belt delivers  more than just OE quality. Developed through extensive laboratory and road testing, the rib profile in this EPDM belt has been engineered to conform to high mileage, worn or misaligned drives and helps eliminate noisy belt conditions. Dayco poly rib serpentine belts offer extensive flexibility and longer service life, while handling higher workloads and temperatures.

Product Features:
  • Provides full coverage for today’s light-duty vehicle market, especially vehicles with troublesome drives
  • Engineered to help address noise issues caused by the belt drive 
  • Capable of handling more extreme temperatures and workloads
See More

Driveworks – Poly Rib Belt Serpentine Belt; 35.04 Long, 4 Rib Count (Part No.350K4)

Poly Rib Belt Serpentine Belt; 35.04 Long, 4 Rib Count

from

$37.49
The Driveworks belt is designed to provide better belt-to-pulley contact. The specialized rubber compound incorporates a high temperature polymer formulated to maximize load carrying requirements and belt life. This Driveworks ribbed belt has been constructed and engineered to meet the stringent demands of today’s automotive drive systems. The Driveworks ribbed belt delivers long-lasting dependable belt life.

Product Features:
  • Constructed with heat and ozone resistant EPDM rubber
  • Fiber is added to the rib stock to reinforce the rubber and reduce noise from worn and misaligned pulleys
  • Made with treated polyester cord to reduce belt stretch
See More

Dayco – Poly Rib Belt Serpentine Belt; 33.86 Long, 4 Rib Count (Part No.5040338)

Poly Rib Belt Serpentine Belt; 33.86 Long, 4 Rib Count

from

$28.49
Constructed with aramid reinforced EPDM compounds, the Dayco poly-V serpentine belt delivers  more than just OE quality. Developed through extensive laboratory and road testing, the rib profile in this EPDM belt has been engineered to conform to high mileage, worn or misaligned drives and helps eliminate noisy belt conditions. Dayco poly rib serpentine belts offer extensive flexibility and longer service life, while handling higher workloads and temperatures.

Product Features:
  • Provides full coverage for today’s light-duty vehicle market, especially vehicles with troublesome drives
  • Engineered to help address noise issues caused by the belt drive 
  • Capable of handling more extreme temperatures and workloads
See More

Driveworks – Poly Rib Belt Serpentine Belt; 35.04 Long, 5 Rib Count (Part No.350K5)

Poly Rib Belt Serpentine Belt; 35.04 Long, 5 Rib Count

from

$15.79
The Driveworks belt is designed to provide better belt-to-pulley contact. The specialized rubber compound incorporates a high temperature polymer formulated to maximize load carrying requirements and belt life. This Driveworks ribbed belt has been constructed and engineered to meet the stringent demands of today’s automotive drive systems. The Driveworks ribbed belt delivers long-lasting dependable belt life.

Product Features:
  • Constructed with heat and ozone resistant EPDM rubber
  • Fiber is added to the rib stock to reinforce the rubber and reduce noise from worn and misaligned pulleys
  • Made with treated polyester cord to reduce belt stretch
See More

Dayco – Poly Rib Belt Serpentine Belt; 65 Long, 6 Rib Count (Part No.5060650)

Poly Rib Belt Serpentine Belt; 65 Long, 6 Rib Count

from

$34.49
Constructed with aramid reinforced EPDM compounds, the Dayco poly-V serpentine belt delivers  more than just OE quality. Developed through extensive laboratory and road testing, the rib profile in this EPDM belt has been engineered to conform to high mileage, worn or misaligned drives and helps eliminate noisy belt conditions. Dayco poly rib serpentine belts offer extensive flexibility and longer service life, while handling higher workloads and temperatures.

Product Features:
  • Provides full coverage for today’s light-duty vehicle market, especially vehicles with troublesome drives
  • Engineered to help address noise issues caused by the belt drive 
  • Capable of handling more extreme temperatures and workloads
See More

Dayco – Poly Rib Belt Serpentine Belt; 38 Long, 6 Rib Count (Part No.5060380)

Poly Rib Belt Serpentine Belt; 38 Long, 6 Rib Count

from

$31.99
Constructed with aramid reinforced EPDM compounds, the Dayco poly-V serpentine belt delivers  more than just OE quality. Developed through extensive laboratory and road testing, the rib profile in this EPDM belt has been engineered to conform to high mileage, worn or misaligned drives and helps eliminate noisy belt conditions. Dayco poly rib serpentine belts offer extensive flexibility and longer service life, while handling higher workloads and temperatures.

Product Features:
  • Provides full coverage for today’s light-duty vehicle market, especially vehicles with troublesome drives
  • Engineered to help address noise issues caused by the belt drive 
  • Capable of handling more extreme temperatures and workloads
See More

Driveworks – Poly Rib Belt Serpentine Belt; 33.5 Long, 4 Rib Count (Part No.335K4)

Poly Rib Belt Serpentine Belt; 33.5 Long, 4 Rib Count

from

$19.79
The Driveworks belt is designed to provide better belt-to-pulley contact. The specialized rubber compound incorporates a high temperature polymer formulated to maximize load carrying requirements and belt life. This Driveworks ribbed belt has been constructed and engineered to meet the stringent demands of today’s automotive drive systems. The Driveworks ribbed belt delivers long-lasting dependable belt life.

Product Features:
  • Constructed with heat and ozone resistant EPDM rubber
  • Fiber is added to the rib stock to reinforce the rubber and reduce noise from worn and misaligned pulleys
  • Made with treated polyester cord to reduce belt stretch
See More

Dayco – Poly Rib Belt Serpentine Belt; 38.2 Long, 4 Rib Count (Part No.5040382)

Poly Rib Belt Serpentine Belt; 38.2 Long, 4 Rib Count

from

$27.49
Constructed with aramid reinforced EPDM compounds, the Dayco poly-V serpentine belt delivers  more than just OE quality. Developed through extensive laboratory and road testing, the rib profile in this EPDM belt has been engineered to conform to high mileage, worn or misaligned drives and helps eliminate noisy belt conditions. Dayco poly rib serpentine belts offer extensive flexibility and longer service life, while handling higher workloads and temperatures.

Product Features:
  • Provides full coverage for today’s light-duty vehicle market, especially vehicles with troublesome drives
  • Engineered to help address noise issues caused by the belt drive 
  • Capable of handling more extreme temperatures and workloads
See More

Driveworks – Poly Rib Belt Serpentine Belt; 38.2 Long, 4 Rib Count (Part No.382K4)

Poly Rib Belt Serpentine Belt; 38.2 Long, 4 Rib Count

from

$17.99
The Driveworks belt is designed to provide better belt-to-pulley contact. The specialized rubber compound incorporates a high temperature polymer formulated to maximize load carrying requirements and belt life. This Driveworks ribbed belt has been constructed and engineered to meet the stringent demands of today’s automotive drive systems. The Driveworks ribbed belt delivers long-lasting dependable belt life.

Product Features:
  • Constructed with heat and ozone resistant EPDM rubber
  • Fiber is added to the rib stock to reinforce the rubber and reduce noise from worn and misaligned pulleys
  • Made with treated polyester cord to reduce belt stretch
See More

Driveworks – Poly Rib Belt Serpentine Belt; 38.8 Long, 4 Rib Count (Part No.388K4)

Poly Rib Belt Serpentine Belt; 38.8 Long, 4 Rib Count

from

$14.79
This Driveworks v-belt is designed to provide better belt-to-pulley contact. The specialized rubber compound incorporates a high temperature polymer formulated to maximize load carrying requirements and belt life. This Driveworks belt has been constructed and engineered to meet the stringent demands of today’s automotive drive systems. The Driveworks v-belt delivers long-lasting dependable belt life.

Product Features:
  • Constructed with heat and ozone resistant EPDM rubber
  • Fiber is added to the rib stock to reinforce the rubber and reduce noise from worn and misaligned pulleys
  • Made with treated polyester cord to reduce belt stretch
  • Meets OEM requirements
See More

Driveworks – Poly Rib Belt Serpentine Belt; 38 Long, 6 Rib Count (Part No.380K6)

Poly Rib Belt Serpentine Belt; 38 Long, 6 Rib Count

from

$14.79
The Driveworks belt is designed to provide better belt-to-pulley contact. The specialized rubber compound incorporates a high temperature polymer formulated to maximize load carrying requirements and belt life. This Driveworks ribbed belt has been constructed and engineered to meet the stringent demands of today’s automotive drive systems. The Driveworks ribbed belt delivers long-lasting dependable belt life.

Product Features:
  • Constructed with heat and ozone resistant EPDM rubber
  • Fiber is added to the rib stock to reinforce the rubber and reduce noise from worn and misaligned pulleys
  • Made with treated polyester cord to reduce belt stretch
See More

Dayco – Poly Rib Belt Serpentine Belt; 38.58 Long, 4 Rib Count (Part No.5040385)

Poly Rib Belt Serpentine Belt; 38.58 Long, 4 Rib Count

from

$28.99
Constructed with aramid reinforced EPDM compounds, the Dayco poly-V serpentine belt delivers  more than just OE quality. Developed through extensive laboratory and road testing, the rib profile in this EPDM belt has been engineered to conform to high mile

Product Features:
  • Provides full coverage for today’s light-duty vehicle market, especially vehicles with troublesome drives
  • Engineered to help address noise issues caused by the belt drive 
  • Capable of handling more extreme temperatures and workloads
See More

Driveworks – Poly Rib Belt Serpentine Belt; 78 Long, 6 Rib Count (Part No.780K6)

Poly Rib Belt Serpentine Belt; 78 Long, 6 Rib Count

from

$24.99
The Driveworks belt is designed to provide better belt-to-pulley contact. The specialized rubber compound incorporates a high temperature polymer formulated to maximize load carrying requirements and belt life. This Driveworks ribbed belt has been constructed and engineered to meet the stringent demands of today’s automotive drive systems. The Driveworks ribbed belt delivers long-lasting dependable belt life.

Product Features:
  • Constructed with heat and ozone resistant EPDM rubber
  • Fiber is added to the rib stock to reinforce the rubber and reduce noise from worn and misaligned pulleys
  • Made with treated polyester cord to reduce belt stretch
See More

Driveworks – Poly Rib Belt Serpentine Belt; 62.6 Long, 6 Rib Count (Part No.625K6)

Poly Rib Belt Serpentine Belt; 62.6 Long, 6 Rib Count

from

$18.79
This Driveworks v-belt is designed to provide better belt-to-pulley contact. The specialized rubber compound incorporates a high temperature polymer formulated to maximize load carrying requirements and belt life. This Driveworks belt has been constructed and engineered to meet the stringent demands of today’s automotive drive systems. The Driveworks v-belt delivers long-lasting dependable belt life.

Product Features:
  • Constructed with heat and ozone resistant EPDM rubber
  • Fiber is added to the rib stock to reinforce the rubber and reduce noise from worn and misaligned pulleys
  • Made with treated polyester cord to reduce belt stretch
  • Meets OEM requirements
See More

Dayco – Poly Rib Belt Serpentine Belt; 37.8 Long, 4 Rib Count (Part No.5040378)

Poly Rib Belt Serpentine Belt; 37.8 Long, 4 Rib Count

from

$38.49
Constructed with aramid reinforced EPDM compounds, the Dayco poly-V serpentine belt delivers  more than just OE quality. Developed through extensive laboratory and road testing, the rib profile in this EPDM belt has been engineered to conform to high mile

Product Features:
  • Provides full coverage for today’s light-duty vehicle market, especially vehicles with troublesome drives
  • Engineered to help address noise issues caused by the belt drive 
  • Capable of handling more extreme temperatures and workloads
See More

Dayco – Poly Rib Belt Serpentine Belt; 86.5 Long, 6 Rib Count (Part No.5060865)

Poly Rib Belt Serpentine Belt; 86.5 Long, 6 Rib Count

from

$53.99
Constructed with aramid reinforced EPDM compounds, the Dayco poly-V serpentine belt delivers  more than just OE quality. Developed through extensive laboratory and road testing, the rib profile in this EPDM belt has been engineered to conform to high mile

Product Features:
  • Provides full coverage for today’s light-duty vehicle market, especially vehicles with troublesome drives
  • Engineered to help address noise issues caused by the belt drive 
  • Capable of handling more extreme temperatures and workloads
See More

Dayco – Poly Rib Belt Serpentine Belt; 34.5 Long, 5 Rib Count (Part No.5050345)

Poly Rib Belt Serpentine Belt; 34.5 Long, 5 Rib Count

from

$27.49
Constructed with aramid reinforced EPDM compounds, the Dayco poly-V serpentine belt delivers  more than just OE quality. Developed through extensive laboratory and road testing, the rib profile in this EPDM belt has been engineered to conform to high mile

Product Features:
  • Provides full coverage for today’s light-duty vehicle market, especially vehicles with troublesome drives
  • Engineered to help address noise issues caused by the belt drive 
  • Capable of handling more extreme temperatures and workloads
See More

Dayco – Poly Rib Belt Serpentine Belt; 64 Long, 6 Rib Count (Part No.5060640)

Poly Rib Belt Serpentine Belt; 64 Long, 6 Rib Count

from

$33.49
Constructed with aramid reinforced EPDM compounds, the Dayco poly-V serpentine belt delivers  more than just OE quality. Developed through extensive laboratory and road testing, the rib profile in this EPDM belt has been engineered to conform to high mile

Product Features:
  • Provides full coverage for today’s light-duty vehicle market, especially vehicles with troublesome drives
  • Engineered to help address noise issues caused by the belt drive 
  • Capable of handling more extreme temperatures and workloads
See More

Driveworks – Poly Rib Belt Serpentine Belt; 33.86 Long, 4 Rib Count (Part No.338K4)

Poly Rib Belt Serpentine Belt; 33.86 Long, 4 Rib Count

from

$15.49
The Driveworks belt is designed to provide better belt-to-pulley contact. The specialized rubber compound incorporates a high temperature polymer formulated to maximize load carrying requirements and belt life. This Driveworks ribbed belt has been constructed and engineered to meet the stringent demands of today’s automotive drive systems. The Driveworks ribbed belt delivers long-lasting dependable belt life.

Product Features:
  • Constructed with heat and ozone resistant EPDM rubber
  • Fiber is added to the rib stock to reinforce the rubber and reduce noise from worn and misaligned pulleys
  • Made with treated polyester cord to reduce belt stretch
See More

Driveworks – Poly Rib Belt Serpentine Belt; 33.27 Long, 4 Rib Count (Part No.333K4)

Poly Rib Belt Serpentine Belt; 33.27 Long, 4 Rib Count

from

$30.49
The Driveworks belt is designed to provide better belt-to-pulley contact. The specialized rubber compound incorporates a high temperature polymer formulated to maximize load carrying requirements and belt life. This Driveworks ribbed belt has been constructed and engineered to meet the stringent demands of today’s automotive drive systems. The Driveworks ribbed belt delivers long-lasting dependable belt life.

Product Features:
  • Constructed with heat and ozone resistant EPDM rubber
  • Fiber is added to the rib stock to reinforce the rubber and reduce noise from worn and misaligned pulleys
  • Made with treated polyester cord to reduce belt stretch
See More

Driveworks – Poly Rib Belt Serpentine Belt; 35.25 Long, 4 Rib Count (Part No.353K4)

Poly Rib Belt Serpentine Belt; 35.25 Long, 4 Rib Count

from

$10.99
The Driveworks belt is designed to provide better belt-to-pulley contact. The specialized rubber compound incorporates a high temperature polymer formulated to maximize load carrying requirements and belt life. This Driveworks ribbed belt has been constructed and engineered to meet the stringent demands of today’s automotive drive systems. The Driveworks ribbed belt delivers long-lasting dependable belt life.

Product Features:
  • Constructed with heat and ozone resistant EPDM rubber
  • Fiber is added to the rib stock to reinforce the rubber and reduce noise from worn and misaligned pulleys
  • Made with treated polyester cord to reduce belt stretch
See More

Driveworks – Poly Rib Belt Serpentine Belt; 86.5 Long, 6 Rib Count (Part No.865K6)

Poly Rib Belt Serpentine Belt; 86.5 Long, 6 Rib Count

from

$45.49
The Driveworks belt is designed to provide better belt-to-pulley contact. The specialized rubber compound incorporates a high temperature polymer formulated to maximize load carrying requirements and belt life. This Driveworks ribbed belt has been constructed and engineered to meet the stringent demands of today’s automotive drive systems. The Driveworks ribbed belt delivers long-lasting dependable belt life.

Product Features:
  • Constructed with heat and ozone resistant EPDM rubber
  • Fiber is added to the rib stock to reinforce the rubber and reduce noise from worn and misaligned pulleys
  • Made with treated polyester cord to reduce belt stretch
See More

Driveworks – Poly Rib Belt Serpentine Belt; 34.5 Long, 5 Rib Count (Part No.345K5)

Poly Rib Belt Serpentine Belt; 34.5 Long, 5 Rib Count

from

$15.79
The Driveworks belt is designed to provide better belt-to-pulley contact. The specialized rubber compound incorporates a high temperature polymer formulated to maximize load carrying requirements and belt life. This Driveworks ribbed belt has been constructed and engineered to meet the stringent demands of today’s automotive drive systems. The Driveworks ribbed belt delivers long-lasting dependable belt life.

Product Features:
  • Constructed with heat and ozone resistant EPDM rubber
  • Fiber is added to the rib stock to reinforce the rubber and reduce noise from worn and misaligned pulleys
  • Made with treated polyester cord to reduce belt stretch
See More