HomeBelts and Cooling > Accessory Drive Belt System ComponentsDayco 3PK784EE Serpentine Belt - Water Pump
Part #: 3PK784EE

Dayco 3PK784EE Serpentine Belt - Water Pump

Supersedes E030301, Water Pump
⚙️ 11 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Supersedes E030301, Water Pump
🚗Fitment: Kia and Hyundai, Optima and Sonata
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Overview of Dayco 3PK784EE Serpentine Belt for Hyundai and Kia

The Dayco 3PK784EE serpentine belt is engineered for reliable performance in Hyundai Optima and Kia Sonata vehicles. Designed with durable EPDM4 material, this belt ensures consistent operation within a wide temperature range, making it suitable for various driving conditions.

  • Constructed from EPDM4 material for enhanced durability
  • Top width of 0.40 inches with a 3-rib straight rib profile
  • Effective length of 30.866 inches (784 mm) and free length of approximately 30.1 inches (764.54 mm)
  • K-section cross section with standard rib depth for optimal fit
  • Operates efficiently between -45°C and 212°F (100°C)
  • Meets SAE J1459 standards for quality and performance

Detailed Product Description and Brand Line Information

The Dayco 3PK784EE serpentine belt is part of the Supersedes E030301 product line, which focuses on providing replacement belts that meet or exceed original equipment specifications. This ensures compatibility and reliable performance for accessory drive belt systems in select vehicles. The belt’s K-section cross section and three-rib design provide a secure grip on pulleys, reducing slippage and wear. Its EPDM4 composition offers resistance to heat, ozone, and wear, supporting long service life under varying operating temperatures from -45°C to 100°C.

Compatible Vehicles and Common Applications

This serpentine belt is compatible with the following makes and models:

  • Hyundai Optima
  • Kia Sonata

It is designed to replace worn or damaged belts in the accessory drive belt system, helping to maintain proper function of components such as the alternator, power steering pump, and air conditioning compressor.

  • Eliminates belt slippage and squealing noises
  • Prevents premature belt cracking or fraying
  • Restores proper tension and alignment in the accessory drive system
  • Reduces risk of overheating due to belt failure

Installation Notes and Tips

When installing the Dayco 3PK784EE serpentine belt, ensure the belt routing matches the vehicle’s belt diagram. Inspect pulleys and tensioners for wear or damage before installation. Proper tension adjustment is critical to avoid premature belt wear or noise. Use appropriate tools to relieve tension and avoid damaging the belt during installation.

Quality Assurance and Standards

The Dayco 3PK784EE serpentine belt complies with SAE J1459 standards, ensuring it meets industry requirements for durability and performance. Manufactured with quality materials and tested for consistent operation, this belt supports reliable accessory drive system function. Warranty information should be confirmed with the parts provider or vehicle manufacturer.

BrandDayco
Part Number3PK784EE
PositionSupersedes E030301, Water Pump
ColorBlack
Cross SectionK-Section
Effective Length30.866
Effective Length784
Free Length30.1
Free Length764.540
MaterialEPDM4
Maximum Operating Temperature100
Maximum Operating Temperature212
Minimum Operating Temperature-45
Minimum Operating Temperature-42.7
Outside Circumference0
Rib DepthStandard
Rib ProfileStraight Rib
Rib Quantity3
StandardsSAE J1459
Top Width.40

This part fits 11 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2016KiaOptima2.4LL4ELECTRIC/GASWater PumpElastic self-tensioning belt; installation tool required.; Supersedes E030301
2015HyundaiSonata2.4LL4ELECTRIC/GASWater PumpElastic self-tensioning belt; installation tool required.; Supersedes E030301
2015KiaOptima2.4LL4ELECTRIC/GASWater PumpElastic self-tensioning belt; installation tool required.; Supersedes E030301
2014HyundaiSonata2.4LL4ELECTRIC/GASWater PumpElastic self-tensioning belt; installation tool required.; Supersedes E030301
2014KiaOptima2.4LL4ELECTRIC/GASWater PumpElastic self-tensioning belt; installation tool required.; Supersedes E030301
2013HyundaiSonata2.4LL4ELECTRIC/GASWater PumpElastic self-tensioning belt; installation tool required.; Supersedes E030301
2013KiaOptima2.4LL4ELECTRIC/GASWater PumpElastic self-tensioning belt; installation tool required.; Supersedes E030301
2012HyundaiSonata2.4LL4ELECTRIC/GASWater PumpElastic self-tensioning belt; installation tool required.; Supersedes E030301
2012KiaOptima2.4LL4ELECTRIC/GASWater PumpElastic self-tensioning belt; installation tool required.; Supersedes E030301
2011HyundaiSonata2.4LL4ELECTRIC/GASWater PumpElastic self-tensioning belt; installation tool required.; Supersedes E030301
2011KiaOptima2.4LL4ELECTRIC/GASWater PumpElastic self-tensioning belt; installation tool required.; Supersedes E030301

* 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:

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