Part #: 5050400

Dayco 5050400 Serpentine Belt

Air Conditioning, Alternator and Tensioner
⚙️ 60 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet, Pontiac, Saturn, Mazda, Ford, Mercury, and Porsche, Cobalt, HHR, G5, Vue, Pursuit, Cavalier, Sunfire, Ion, MX-3, Escort, LeMans, Optima, EXP, 626, Lynx, and 944
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Durable Dayco Serpentine Belt for Select Vehicle Models

The Dayco 5050400 serpentine belt is engineered for reliable performance in various Chevrolet, Ford, Mazda, Mercury, Pontiac, Porsche, and Saturn vehicles. Designed with EPDM and aramid reinforcement, this belt offers durability and consistent operation under a wide range of temperatures.

  • Material: EPDM with aramid fiber reinforcement for enhanced strength
  • Top Width: 0.68 inches
  • Effective Length: 1016 mm (40.00 inches)
  • Outside Circumference: 1032.77 mm (40.66 inches)
  • Rib Quantity: 5 ribs with a straight rib profile
  • Cross Section: K-section for optimal fit and performance
  • Operating Temperature Range: -45°C to 212°F (-42.7°C to 100°C)
  • Complies with SAE J1459 and SAE J2432 standards

Technical Overview of Dayco 5050400 Serpentine Belt

This serpentine belt is constructed from EPDM rubber combined with aramid fibers, providing resistance to heat, wear, and stretching. The 5-rib K-section design ensures proper engagement with pulleys, reducing slippage and noise. Its effective length of 1016 mm (40 inches) and outside circumference of approximately 1033 mm (40.66 inches) make it suitable for accessory drive systems requiring these dimensions. The belt maintains performance across a broad temperature range, from sub-zero conditions to high engine heat, making it suitable for diverse driving environments.

Compatible Vehicles and Applications

The Dayco 5050400 serpentine belt is compatible with multiple vehicle makes and models, including Chevrolet Cavalier, Cobalt, HHR, Ion, LeMans, Sunfire, and Vue; Ford Escort; Mazda 626 and MX-3; Mercury Lynx; Pontiac Pursuit and G5; Porsche 944; and Saturn Ion. This belt is designed specifically for accessory drive belt system components in these vehicles, ensuring proper fit and function.

  • Replaces worn or cracked serpentine belts
  • Addresses belt slippage and squealing noises
  • Prevents accessory drive system failures
  • Improves belt tension and alignment
  • Restores proper power transmission to engine accessories

Installation Notes and Tips

When installing the Dayco 5050400 serpentine belt, ensure the belt routing matches the vehicle’s accessory drive diagram. Inspect pulleys and tensioners for wear or damage before installation. Use a belt tension gauge or follow manufacturer torque specifications to achieve correct tension. Avoid twisting or forcing the belt during installation to prevent premature wear.

Quality Assurance and Standards Compliance

Dayco serpentine belts meet SAE J1459 and SAE J2432 standards, ensuring consistent quality and performance. The EPDM and aramid reinforced construction provides durability under demanding operating conditions. While specific warranty details may vary, Dayco products are manufactured to meet rigorous automotive industry requirements for reliability and longevity.

BrandDayco
Part Number5050400
ColorBlack
Cross SectionK-Section
Effective Length40.00
Effective Length1016.00
MaterialEPDM, Aramid Reinforced
Maximum Operating Temperature100
Maximum Operating Temperature212
Minimum Operating Temperature-45
Minimum Operating Temperature-42.7
Outside Circumference40.66
Outside Circumference1032.77
Rib DepthStandard
Rib ProfileStraight Rib
Rib Quantity5
StandardsSAE J1459, SAE J2432
Top Width.68

This part fits 60 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2010ChevroletCobalt2.0LL4Air Conditioning, Alternator and Tensioner
2010ChevroletHHR2.0LL4Main DriveCompatible with vehicles containing air conditioning.
2009ChevroletCobalt2.0LL4Air Conditioning, Alternator and Tensioner
2009ChevroletHHR2.0LL4Main DriveCompatible with vehicles containing air conditioning.
2009PontiacG5Main DriveCompatible with vehicles containing air conditioning.
2008ChevroletHHR2.0LL4Main DriveCompatible with vehicles containing air conditioning.
2007ChevroletCobalt2.2LL4Air Conditioning, Alternator and TensionerW/ Triangle Shaped Clutch Weight on Compressor; w/A.C
2007ChevroletCobalt2.4LL4Air Conditioning, Alternator and TensionerW/ Triangle Shaped Clutch Weight on Compressor; w/A.C
2007ChevroletHHR2.2LL4Air Conditioning, Alternator and TensionerW/ Triangle Shaped Clutch Weight on Compressor; w/A.C
2007ChevroletHHR2.4LL4Air Conditioning, Alternator and TensionerW/ Triangle Shaped Clutch Weight on Compressor; w/A.C
2007PontiacG52.2LL4Air Conditioning, Alternator and TensionerW/ Triangle Shaped Clutch Weight on Compressor; w/A.C
2007PontiacG52.4LL4Air Conditioning, Alternator and TensionerW/ Triangle Shaped Clutch Weight on Compressor; w/A.C
2007SaturnVue2.2LL4Main Drive
2006ChevroletCobalt2.2LL4Air Conditioning, Alternator and Tensioner
2006ChevroletCobalt2.4LL4Air Conditioning, Alternator and Tensioner
2006ChevroletHHR2.2LL4Main Drive
2006ChevroletHHR2.4LL4Main Drive
2006PontiacPursuit2.2LL4Air Conditioning, Alternator and Tensioner
2006PontiacPursuit2.4LL4Air Conditioning and Tensioner
2006SaturnVue2.2LL4Main Drive
2005ChevroletCavalierAir Conditioning, Alternator and Tensioner
2005ChevroletCobalt2.2LL4Air Conditioning, Alternator and Tensioner
2005PontiacPursuitAir Conditioning, Alternator and Tensioner
2005PontiacSunfireAir Conditioning, Alternator and Tensioner
2005SaturnIon2.2LL4Air Conditioning, Alternator and Tensioner
2005SaturnVue2.2LL4Main Drive
2004ChevroletCavalier2.2LL4Air Conditioning, Alternator and Tensioner
2004PontiacSunfireAir Conditioning, Alternator and Tensioner
2004SaturnIon2.2LL4Air Conditioning, Alternator and Tensioner
2004SaturnVue2.2LL4Main Drive
2003ChevroletCavalier2.2LL4Air Conditioning, Alternator and Tensioner
2003PontiacSunfireAir Conditioning, Alternator and Tensioner
2003SaturnIonAir Conditioning, Alternator and Tensioner
2003SaturnVue2.2LL4Main Drive
2002ChevroletCavalier2.2LL4Air Conditioning, Alternator and Tensioner
2002PontiacSunfire2.2LL4Air Conditioning, Alternator and Tensioner
2002SaturnVue2.2LL4Main Drive
1995MazdaMX-31.8LV6Alternator and Air Conditioning
1989FordEscortAir Conditioning and Alternatorw/Factory Air, Early
1989FordEscortAir Conditioning and Alternatorw/Factory Air, 5 Rib Belt
1989PontiacLeMans1.6LL4Alternator and Power Steering
1989PontiacOptima1.6LL4Alternator and Power Steering
1988FordEscortAir Conditioning and AlternatorSerpentine Belt for vehicles with Factory Air
1988PontiacLeMansAlternator and Power Steering
1988PontiacOptima1.6LL4Alternator and Power Steering
1987FordEscort1.9LL4Air Conditioning and AlternatorSerpentine Belt for vehicles with Factory Air
1987Mazda626Alternator and Power SteeringFits vehicles without air conditioning.
1987MercuryLynx1.9LL4Air Conditioning and AlternatorSerpentine Belt for vehicles with Factory Air
1986FordEscort1.9LL4Air Conditioning and AlternatorSerpentine Belt for vehicles with Factory Air
1986Mazda626Alternator and Power SteeringFits vehicles without air conditioning.
1986MercuryLynx1.9LL4Air Conditioning and AlternatorSerpentine Belt for vehicles with Factory Air
1985FordEscort1.6LL4Air Conditioning and AlternatorSerpentine Belt for vehicles with Factory Air
1985FordEscort1.9LL4Air Conditioning and AlternatorSerpentine Belt for vehicles with Factory Air
1985MercuryLynx1.6LL4Air Conditioning and AlternatorSerpentine Belt for vehicles with Factory Air
1985MercuryLynx1.9LL4Air Conditioning and AlternatorSerpentine Belt for vehicles with Factory Air
1985Porsche944Alternator and Air Conditioning5 Rib Belt
1984FordEscort1.6LL4Air Conditioning and AlternatorSerpentine Belt for vehicles with Factory Air
1984MercuryLynx1.6LL4Air Conditioning and AlternatorSerpentine Belt for vehicles with Factory Air
1984Porsche944Alternator and Air Conditioning
1983Porsche944Alternator and Air Conditioning

* 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:

5K400

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