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Dayco 5050780 Serpentine Belt - Main DriveOE Quality 60-Day Returns
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Part #: 5050780

Dayco 5050780 Serpentine Belt - Main Drive

Main Drive
⚙️ 31 vehicles fit this part
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✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Saturn, SC2, SL2, SW2, and SC
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Durable Serpentine Belt for Saturn SC, SC2, SL2, and SW2

The Dayco 5050780 serpentine belt is engineered to provide reliable performance for Saturn SC, SC2, SL2, and SW2 models. Constructed with EPDM and aramid reinforcement, this belt offers enhanced durability and resistance to wear under various operating conditions.

Key Features of Dayco 5050780 Serpentine Belt

  • Material: EPDM with aramid fiber reinforcement for strength and longevity
  • Top Width: 0.68 inches ensuring proper fit and tension
  • Effective Length: Approximately 78 inches (1981.20 mm) for precise compatibility
  • Rib Quantity: 5 ribs with a straight rib profile for efficient power transmission
  • Cross Section: K-section design optimized for accessory drive systems
  • Operating Temperature Range: From -45°C to 212°F (-42.7°C to 100°C) suitable for diverse climates
  • Meets SAE J1459 and SAE J2432 standards for quality and performance

Technical Overview and Compatibility

This serpentine belt is specifically designed for use in the accessory drive belt system of Saturn SC, SC2, SL2, and SW2 vehicles. The K-section cross section and 5-rib design ensure smooth operation of engine accessories such as the alternator, power steering pump, and air conditioning compressor. The EPDM material combined with aramid reinforcement provides resistance to heat, ozone, and wear, extending belt life and maintaining consistent performance.

Common Applications and Problem Solving

  • Replacement for worn or cracked serpentine belts in Saturn SC series vehicles
  • Addresses belt slippage and squealing noises caused by degraded belts
  • Prevents accessory drive system failures due to belt breakage
  • Improves engine accessory efficiency by maintaining proper belt tension
  • Suitable for vehicles experiencing belt wear from extreme temperature fluctuations

Installation Notes and Tips

  • Ensure correct routing of the serpentine belt according to the vehicle’s belt diagram
  • Inspect pulleys and tensioners for wear before installation to avoid premature belt failure
  • Use proper tools to relieve tension on the belt tensioner during installation
  • Verify belt alignment and tension after installation to prevent noise and slippage

Quality Assurance and Warranty

Dayco 5050780 serpentine belts comply with SAE J1459 and SAE J2432 standards, ensuring consistent quality and performance. Manufactured with high-grade EPDM and aramid fibers, this belt is designed to meet the rigorous demands of Saturn SC, SC2, SL2, and SW2 vehicles. Warranty coverage details should be confirmed with the original equipment manufacturer or authorized distributor.

BrandDayco
Part Number5050780
ColorBlack
Cross SectionK-Section
Effective Length78.00
Effective Length1981.20
MaterialEPDM, Aramid Reinforced
Maximum Operating Temperature100
Maximum Operating Temperature212
Minimum Operating Temperature-45
Minimum Operating Temperature-42.7
Outside Circumference78.66
Outside Circumference1997.97
Rib DepthStandard
Rib ProfileStraight Rib
Rib Quantity5
StandardsSAE J1459, SAE J2432
Top Width.68

This part fits 31 vehicles. Search below:

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.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

5K7785K780

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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