Dayco 5050520 | Serpentine Belt

Part Number
Serpentine Belt

Fits: 87-88 Buick Skyhawk, 87-88 Oldsmobile Firenza, 87-89 Pontiac Grand Am, 87-94 Pontiac Sunbird, 88-90 Pontiac Optima, 89-90 Pontiac LeMans, 97 Mitsubishi Mirage

Special Price $18.67 Regular Price $22.66
In stock
Only 2 left
Free Shipping
Estimated Ship Date: 1 Business Day or Less
Designed for high mileage multiple-accessory drivesthe Dayco® “W” profile belt (patent pending) is the most innovative advancement in multi-rib belt design in over 25 years. Developed through extensive laboratory and actual road mileage testing, this unique rib profile has been specifically Dayco® engineered to conform to high mileage, worn or misaligned drives without a sacrifice in quiet, long-lasting performance. The "W" profile cut into the tip of each rib makes the tip more flexible and eliminates belt chirp when the belt enters a worn or misalligned pulley. Constructed with Aramid reinforced EPDM compounds, the Dayco® “W” profile belt delivers more than OE required delivers the solution to troublesome drive problems. Dayco® Poly-Rib® Belts meet or exceed SAE J1459 and SAE J2432 specifications.

BRAND: Dayco




Cross SectionK-Section
Effective Length52.00
Effective Length1320.80
MaterialEPDM, Aramid Reinforced
Maximum Operating Temperature212
Maximum Operating Temperature100
Minimum Operating Temperature-45
Minimum Operating Temperature-42.7
Outside Circumference1337.57
Outside Circumference52.66
Rib DepthStandard
Rib ProfileStraight Rib
StandardsSAE J1459, SAE J2432
Top Width.68



  • General Motors: 10198884
  • Mighty: 5K520
  • Driveworks: 520K5
  • NAPA: 25-71320
  • Dynacraft: D1102-6337
  • Mack: 88GB448P520
  • Cummins: 3036042
  • Goodyear: 4050520
  • Duralast: 520K5
  • CARQUEST: K050520
  • NAPA: 25-050520
  • Pirelli: 520K5
  • Freshstart: 520K5
  • V&W: 520K5
  • General Motors: 14076482
  • Beck/Arnley: 146-051320
  • Mitsubishi: MD317245
  • Gates: K050520
  • ACDelco: 5K520
  • Bando: 5PK1320
  • ContiTech: PK050520


  • 1988-1988 Oldsmobile Firenza - Position: Alternator, Power Steering and Tensioner
  • 1988-1988 Buick Skyhawk - Position: Alternator, Power Steering and Tensioner
  • 1989-1990 Pontiac LeMans - Position: Alternator, Power Steering and Tensioner
  • 1987-1987 Buick Skyhawk - Position: Fan, Alternator and Power Steering
  • 1997-1997 Mitsubishi Mirage - Position: Power Steering, Air Conditioning and Idler
  • 1987-1987 Oldsmobile Firenza - Position: Main Drive
  • 1988-1990 Pontiac Optima - Position: Alternator, Power Steering and Tensioner
  • 1987-1987 Pontiac Sunbird - Position: Alternator and Power Steering
  • 1988-1994 Pontiac Sunbird - Position: Alternator, Power Steering and Tensioner
  • 1988-1989 Pontiac Grand Am - Position: Alternator, Power Steering and Tensioner
  • 1987-1987 Pontiac Grand Am - Position: Alternator and Power Steering
Customer Questions
Can a serpentine belt cause smoke?
Yes, a serpentine belt can cause smoke. A serpentine belt is an essential component of a vehicle's engine system. It drives various accessories such as the alternator, power steering pump, water pump, and air conditioning compressor. If the serpentine belt becomes worn, damaged, or misaligned, it can cause friction and generate smoke.
Why is my serpentine belt squealing?
The serpentine belt can squeal due to various reasons, including tension issues, worn-out belt, or a problem with the belt's pulleys.
Is my serpentine belt too tight?
If your serpentine belt is causing issues like excessive noise or accelerated wear on the pulleys, it may indicate that the belt is too tight.
Why did my serpentine belt come off?
Serpentine belts can come off due to factors such as belt wear, improper tension, misaligned pulleys, or a faulty tensioner.
Please, mind that only logged in users can submit questions

Compatible Vehicles


You may also be interested in

Copyright © 2013-present PartsHawk, LLC. All rights reserved.