Part #: 5040370

Dayco 5040370 Serpentine Belt

Air Conditioning, Air Conditioning and Idler, Alternator and Water Pump, and Air Conditioning and Power Steering
⚙️ 39 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Acura, Dodge, Hyundai, Kia, Mazda, Mitsubishi, and Plymouth, Colt, Eclipse, Elantra, Expo, Expo LRV, Laser, Legend, Miata, Sonata, and Sorento
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Durable Serpentine Belt for Acura, Dodge, Hyundai, and More

The Dayco 5040370 serpentine belt is engineered to provide reliable performance for a range of vehicles including Acura Legend, Dodge Colt, Hyundai Elantra, and Kia Sorento. Constructed with EPDM and aramid reinforcement, this belt offers enhanced durability and resistance to wear under various operating conditions.

  • Material: EPDM with aramid fiber reinforcement for strength and longevity
  • Top Width: 0.54 inches ensuring proper fit and tension
  • Effective Length: 37.01 inches (940.06 mm) for precise compatibility
  • Outside Circumference: Approximately 37.67 inches (956.82 mm)
  • Rib Quantity: 4 ribs with a straight rib profile for efficient power transmission
  • Cross Section: K-section design for optimal belt seating and flexibility
  • Operating Temperature Range: -45°C to 100°C (-49°F to 212°F) suitable for diverse climates
  • Meets SAE J1459 and SAE J2432 standards for quality and performance

Technical Overview of Dayco 5040370 Serpentine Belt

This serpentine belt is designed to maintain consistent power delivery to accessory drive components such as the alternator, power steering pump, and air conditioning compressor. The EPDM material combined with aramid reinforcement enhances resistance to heat, ozone, and mechanical stress, extending belt life. The 4-rib K-section profile ensures stable engagement with pulleys, reducing slippage and noise. Its temperature tolerance from -45°C to 100°C (-49°F to 212°F) allows it to perform reliably in both cold starts and high-heat engine environments.

Compatible Vehicles and Applications

The Dayco 5040370 serpentine belt is compatible with various makes and models, including:

  • Acura Legend
  • Dodge Colt and Plymouth Laser
  • Hyundai Elantra, Sonata, and Expo LRV
  • Kia Sorento
  • Mazda Miata
  • Mitsubishi Eclipse and Expo

This belt is suitable for replacing worn or damaged accessory drive belts in these vehicles, ensuring proper engine accessory function.

Common Issues Addressed by This Serpentine Belt

  • Eliminates belt cracking and fraying caused by aging or heat exposure
  • Prevents slipping and squealing noises from worn belts
  • Restores proper tension and alignment in accessory drive systems
  • Reduces risk of accessory component failure due to belt breakage
  • Improves overall engine efficiency by maintaining consistent accessory operation

Installation Notes and Tips

When installing the Dayco 5040370 serpentine belt, ensure the belt routing matches the vehicle’s specific diagram. Check pulleys and tensioners for wear or damage before installation. Proper tension adjustment is critical to avoid premature belt wear or slippage. Use a belt tension gauge if available to verify correct tension. Inspect the belt periodically after installation to confirm secure fit and performance.

Quality Assurance and Standards Compliance

Dayco 5040370 serpentine belt meets SAE J1459 and SAE J2432 standards, ensuring it adheres to industry requirements for durability and performance. The use of EPDM and aramid reinforcement materials provides resistance to heat, ozone, and mechanical stress. While specific warranty details are not provided, Dayco products are manufactured under strict quality control processes to deliver consistent reliability for automotive accessory drive systems.

BrandDayco
Part Number5040370
MaterialEpdm, aramid reinforced
Top Width.54
ColorBlack
Effective Length37.01
Effective Length940.06
Outside Circumference37.67
Outside Circumference956.82
Rib Quantity4
Cross SectionK-section
Maximum Operating Temperature100
Maximum Operating Temperature212
Minimum Operating Temperature-42.7
Minimum Operating Temperature-45
Rib DepthStandard
Rib ProfileStraight rib
StandardsSae j1459, sae j2432

This part fits 39 vehicles. Search below:

YearMakeModelBody TypeLitersCylindersPositionNotes
2006KiaSorentoAir Conditioning and Idler
2005KiaSorentoAir Conditioning and Idler
2004KiaSorentoAir Conditioning and Idler
2003KiaSorentoAir Conditioning and Idler
1999HyundaiSonata2.4LL4Alternator and Water Pump
1999MitsubishiEclipse2.4LL4Air Conditioning and Idler
1999MitsubishiEclipse2.0LL4Air Conditioning and Idler
1997MazdaMiataAir Conditioning and Power Steering
1996MazdaMiataAir Conditioning and Power Steering
1995HyundaiElantra1.8LL4Air Conditioning and Idler
1995HyundaiElantra1.6LL4Air Conditioning and Idler
1995MazdaMiataAir Conditioning and Power Steering
1995MitsubishiExpoAir Conditioning and Idler
1994DodgeColt2.4LL4Air Conditioning and Idler
1994HyundaiElantra1.8LL4Air Conditioning and Idler
1994HyundaiElantra1.6LL4Air Conditioning and Idler
1994MazdaMiataAir Conditioning and Power Steering
1994MitsubishiEclipse2.0LL4Air Conditioning and Idler
1994MitsubishiExpoAir Conditioning and Idler
1994MitsubishiExpo LRV2.4LL4Air Conditioning and Idler
1994PlymouthLaser2.0LL4Air Conditioning and Idler
1993DodgeColt2.4LL4Air Conditioning and Idler
1993HyundaiElantra1.8LL4Air Conditioning and IdlerMfg. From 2/93
1993HyundaiElantra1.6LL4Air Conditioning and IdlerMfg. From 2/93
1993MitsubishiEclipse2.0LL4Air Conditioning and Idler
1993MitsubishiExpoAir Conditioning and Idler
1993MitsubishiExpo LRV2.4LL4Air Conditioning and Idler
1993PlymouthLaser2.0LL4Air Conditioning and Idler
1992MitsubishiEclipse2.0LL4Air Conditioning and Idler
1992MitsubishiExpoAir Conditioning and Idler
1992PlymouthLaser2.0LL4Air Conditioning and Idler
1991MitsubishiEclipse2.0LL4Air Conditioning and Idler
1991PlymouthLaser2.0LL4Air Conditioning and Idler
1990AcuraLegendCoupeAir Conditioning and Idler
1990MitsubishiEclipse2.0LL4Air Conditioning and Idler
1990PlymouthLaser2.0LL4Air Conditioning and Idler
1989AcuraLegendCoupeAir Conditioning and Idler
1988AcuraLegendCoupeAir Conditioning and Idler
1987AcuraLegend2.7LV6Air Conditioning and Idler

* 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:

4K370

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