Dayco 5050780 Serpentine Belt - Main Drive
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Dayco

Dayco 5050780 Serpentine Belt - Main Drive

Brand Dayco 5050780
Position Main Drive
Color Black
Cross Section K-Section
Effective Length 78.00
Effective Length 1981.20
Material EPDM, Aramid Reinforced
Maximum Operating Temperature 100
Maximum Operating Temperature 212
Minimum Operating Temperature -45
Minimum Operating Temperature -42.7
Outside Circumference 78.66
Outside Circumference 1997.97
Rib Depth Standard
Rib Profile Straight Rib
Rib Quantity 5
Standards SAE J1459, SAE J2432
Top Width .68
Fits Saturn · 31 vehicles

Aramid reinforced. EPDM construction adds strength and durability under demanding conditions.

Straight rib profile. Helps maintain consistent contact and efficient power transfer.

SAE J1459, SAE J2432. Built to meet recognized industry standards for belt performance.

Cross-references ACDelco 5K778, ACDelco 5K780 and Bando 5PK1980 for the same application. See all 18.

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Dayco 5050780 Serpentine Belt for Saturn Main Drive

The Dayco 5050780 serpentine belt is built for accessory drive service on select Saturn vehicles with power steering and air conditioning. It uses EPDM rubber with aramid reinforcement to support stable operation across a wide temperature range, making it a practical replacement for worn or noisy drive belts.

  • EPDM, aramid reinforced construction for durability in accessory drive service
  • 5-rib K-section design with straight rib profile
  • Black belt with .68 top width
  • Effective length: 78.00 in. / 1981.20 mm
  • Outside circumference: 78.66 in. / 1997.97 mm
  • Operating temperature range: -45°F to 212°F
  • Built to SAE J1459 and SAE J2432 standards

Fitment and Application

Compatible with Saturn SC2, SL2, SW2, and SC main drive applications listed below. This Dayco 5050780 belt is a direct-fit option for Saturn SC2 and Saturn SL2 models with power steering and air conditioning, as well as Saturn SW2 and Saturn SC main drive setups with the same configuration.

  • Fits 1993-2002 Saturn SC2, Main Drive, w/P.S., w/A.C.
  • Fits 1992-2002 Saturn SL2, Main Drive, w/P.S., w/A.C.
  • Fits 1993-2001 Saturn SW2, Main Drive, w/P.S., w/A.C.
  • Fits 1992 Saturn SC, Main Drive, w/P.S., w.A.C.

What This Belt Helps Address

  • Squealing or chirping from a worn accessory drive belt
  • Cracking, glazing, or rib wear on the existing belt
  • Loss of proper drive to power steering and A/C accessories
  • Belt stretch or tension loss that can affect accessory performance
  • Replacement needs for Saturn SC2, SL2, SW2, and SC main drive service

Installation Notes and Tips

Verify belt routing against the vehicle’s accessory drive layout before installation. Inspect pulleys, tensioner operation, and accessory alignment at the same time, since worn components can shorten belt life. Confirm the application by year, model, and equipment package before ordering Dayco 5050780.

Quality Assurance

Dayco manufactures this serpentine belt to SAE J1459 and SAE J2432 standards, with EPDM and aramid reinforcement selected for consistent performance in accessory drive systems. This part cross-references Gates (e.g., K050778, K050780) for the same application.

Related reading

This part fits 31 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2002SaturnSC2Main Drivew/P.S., w/A.C.
2002SaturnSL2Main Drivew/P.S., w/A.C.
2001SaturnSC2Main Drivew/P.S., w/A.C.
2001SaturnSL2Main Drivew/P.S., w/A.C.
2001SaturnSW2Main Drivew/P.S., w/A.C.
2000SaturnSC2Main Drivew/P.S., w/A.C.
2000SaturnSL2Main Drivew/P.S., w/A.C.
2000SaturnSW2Main Drivew/P.S., w/A.C.
1999SaturnSC2Main Drivew/P.S., w/A.C.
1999SaturnSL2Main Drivew/P.S., w/A.C.
1999SaturnSW2Main Drivew/P.S., w/A.C.
1998SaturnSC2Main Drivew/P.S., w/A.C.
1998SaturnSL2Main Drivew/P.S., w/A.C.
1998SaturnSW2Main Drivew/P.S., w/A.C.
1997SaturnSC2Main Drivew/P.S., w/A.C.
1997SaturnSL2Main Drivew/P.S., w/A.C.
1997SaturnSW2Main Drivew/P.S., w/A.C.
1996SaturnSC2Main Drivew/P.S., w/A.C.
1996SaturnSL2Main Drivew/P.S., w/A.C.
1996SaturnSW2Main Drivew/P.S., w/A.C.
1995SaturnSC2Main Drivew/P.S., w/A.C.
1995SaturnSL2Main Drivew/P.S., w/A.C.
1995SaturnSW2Main Drivew/P.S., w/A.C.
1994SaturnSC2Main Drivew/P.S., w/A.C.
1994SaturnSL2Main Drivew/P.S., w/A.C.
1994SaturnSW2Main Drivew/P.S., w/A.C.
1993SaturnSC2Main Drivew/P.S., w/A.C.
1993SaturnSL2Main Drivew/P.S., w/A.C.
1993SaturnSW2Main Drivew/P.S., w/A.C.
1992SaturnSCMain Drivew/P.S., w/A.C.
1992SaturnSL2Main Drivew/P.S., w/A.C.
Directly replaces or cross-references 18 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 5K778ACDelco — 5K780Bando — 5PK1980CARQUEST — K050778CARQUEST — K050780Charles Machine — 6669565Driveworks — 780K5Duralast — 780K5Freshstart — 780K5Gates — K050778Gates — K050780General Motors — 21006895General Motors — 21008371Goodyear — 4050778Goodyear — 4050780NAPA — 25-050778NAPA — 25-050780Saturn — 21007098