Dayco 5050417 Serpentine Belt

Part Number
Serpentine Belt

Fits: 83-85 Mazda 626, 88-92 Mazda 626, 87-88 Toyota Corolla, 88 Chevrolet Nova, 88-92 Mazda MX-6, 89-92 Ford Probe, 97-00 Mitsubishi Mirage

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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 Length41.73
Effective Length1059.95
MaterialEPDM, Aramid Reinforced
Maximum Operating Temperature100
Maximum Operating Temperature212
Minimum Operating Temperature-42.7
Minimum Operating Temperature-45
Outside Circumference1076.71
Outside Circumference42.39
Rib DepthStandard
Rib ProfileStraight Rib
StandardsSAE J1459, SAE J2432
Top Width.68




  • Goodyear: 4050418
  • Mazda: F801-15-909B
  • Driveworks: 417K5
  • NAPA: 25-050418
  • Gates: K050418
  • Mazda: F801-15-909D
  • CARQUEST: K050418
  • Ford: F230-15-909
  • Ford: E92Z-8620-B
  • Duralast: 417K5
  • Toyota: 99365-01060
  • Mazda: F801-15-909C
  • Bando: 5PK1055
  • Mazda: F201-15-909A
  • Mitsubishi: MD325599


  • 1987-1987 Toyota Corolla - Position: Power Steering, Air Conditioning and Idler
  • 1997-2000 Mitsubishi Mirage - Position: Air Conditioning and Power Steering
  • 1988-1988 Toyota Corolla - Position: Alternator and Power Steering
  • 1989-1992 Ford Probe - Position: Air Conditioning and Power Steering
  • 1988-1992 Mazda MX-6 - Position: Air Conditioning and Power Steering
  • 1988-1988 Chevrolet Nova - Position: Power Steering, Air Conditioning and Idler
  • 1983-1985 Mazda 626 - Position: Power Steering, Air Conditioning and Idler
  • 1988-1992 Mazda 626 - Position: Air Conditioning and Power Steering
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