OE Quality
60-Day Returns

Dayco 5050400 Serpentine Belt
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.
| Brand | Dayco |
| Part Number | 5050400 |
| Color | Black |
| Cross Section | K-Section |
| Effective Length | 40.00 |
| Effective Length | 1016.00 |
| Material | EPDM, Aramid Reinforced |
| Maximum Operating Temperature | 100 |
| Maximum Operating Temperature | 212 |
| Minimum Operating Temperature | -45 |
| Minimum Operating Temperature | -42.7 |
| Outside Circumference | 40.66 |
| Outside Circumference | 1032.77 |
| Rib Depth | Standard |
| Rib Profile | Straight Rib |
| Rib Quantity | 5 |
| Standards | SAE J1459, SAE J2432 |
| Top Width | .68 |
This part fits 60 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2010 | Chevrolet | Cobalt | 2.0L | L4 | Air Conditioning, Alternator and Tensioner | |
| 2010 | Chevrolet | HHR | 2.0L | L4 | Main Drive | Compatible with vehicles containing air conditioning. |
| 2009 | Chevrolet | Cobalt | 2.0L | L4 | Air Conditioning, Alternator and Tensioner | |
| 2009 | Chevrolet | HHR | 2.0L | L4 | Main Drive | Compatible with vehicles containing air conditioning. |
| 2009 | Pontiac | G5 | Main Drive | Compatible with vehicles containing air conditioning. | ||
| 2008 | Chevrolet | HHR | 2.0L | L4 | Main Drive | Compatible with vehicles containing air conditioning. |
| 2007 | Chevrolet | Cobalt | 2.2L | L4 | Air Conditioning, Alternator and Tensioner | W/ Triangle Shaped Clutch Weight on Compressor; w/A.C |
| 2007 | Chevrolet | Cobalt | 2.4L | L4 | Air Conditioning, Alternator and Tensioner | W/ Triangle Shaped Clutch Weight on Compressor; w/A.C |
| 2007 | Chevrolet | HHR | 2.2L | L4 | Air Conditioning, Alternator and Tensioner | W/ Triangle Shaped Clutch Weight on Compressor; w/A.C |
| 2007 | Chevrolet | HHR | 2.4L | L4 | Air Conditioning, Alternator and Tensioner | W/ Triangle Shaped Clutch Weight on Compressor; w/A.C |
| 2007 | Pontiac | G5 | 2.2L | L4 | Air Conditioning, Alternator and Tensioner | W/ Triangle Shaped Clutch Weight on Compressor; w/A.C |
| 2007 | Pontiac | G5 | 2.4L | L4 | Air Conditioning, Alternator and Tensioner | W/ Triangle Shaped Clutch Weight on Compressor; w/A.C |
| 2007 | Saturn | Vue | 2.2L | L4 | Main Drive | |
| 2006 | Chevrolet | Cobalt | 2.2L | L4 | Air Conditioning, Alternator and Tensioner | |
| 2006 | Chevrolet | Cobalt | 2.4L | L4 | Air Conditioning, Alternator and Tensioner | |
| 2006 | Chevrolet | HHR | 2.2L | L4 | Main Drive | |
| 2006 | Chevrolet | HHR | 2.4L | L4 | Main Drive | |
| 2006 | Pontiac | Pursuit | 2.2L | L4 | Air Conditioning, Alternator and Tensioner | |
| 2006 | Pontiac | Pursuit | 2.4L | L4 | Air Conditioning and Tensioner | |
| 2006 | Saturn | Vue | 2.2L | L4 | Main Drive | |
| 2005 | Chevrolet | Cavalier | Air Conditioning, Alternator and Tensioner | |||
| 2005 | Chevrolet | Cobalt | 2.2L | L4 | Air Conditioning, Alternator and Tensioner | |
| 2005 | Pontiac | Pursuit | Air Conditioning, Alternator and Tensioner | |||
| 2005 | Pontiac | Sunfire | Air Conditioning, Alternator and Tensioner | |||
| 2005 | Saturn | Ion | 2.2L | L4 | Air Conditioning, Alternator and Tensioner | |
| 2005 | Saturn | Vue | 2.2L | L4 | Main Drive | |
| 2004 | Chevrolet | Cavalier | 2.2L | L4 | Air Conditioning, Alternator and Tensioner | |
| 2004 | Pontiac | Sunfire | Air Conditioning, Alternator and Tensioner | |||
| 2004 | Saturn | Ion | 2.2L | L4 | Air Conditioning, Alternator and Tensioner | |
| 2004 | Saturn | Vue | 2.2L | L4 | Main Drive | |
| 2003 | Chevrolet | Cavalier | 2.2L | L4 | Air Conditioning, Alternator and Tensioner | |
| 2003 | Pontiac | Sunfire | Air Conditioning, Alternator and Tensioner | |||
| 2003 | Saturn | Ion | Air Conditioning, Alternator and Tensioner | |||
| 2003 | Saturn | Vue | 2.2L | L4 | Main Drive | |
| 2002 | Chevrolet | Cavalier | 2.2L | L4 | Air Conditioning, Alternator and Tensioner | |
| 2002 | Pontiac | Sunfire | 2.2L | L4 | Air Conditioning, Alternator and Tensioner | |
| 2002 | Saturn | Vue | 2.2L | L4 | Main Drive | |
| 1995 | Mazda | MX-3 | 1.8L | V6 | Alternator and Air Conditioning | |
| 1989 | Ford | Escort | Air Conditioning and Alternator | w/Factory Air, Early | ||
| 1989 | Ford | Escort | Air Conditioning and Alternator | w/Factory Air, 5 Rib Belt | ||
| 1989 | Pontiac | LeMans | 1.6L | L4 | Alternator and Power Steering | |
| 1989 | Pontiac | Optima | 1.6L | L4 | Alternator and Power Steering | |
| 1988 | Ford | Escort | Air Conditioning and Alternator | Serpentine Belt for vehicles with Factory Air | ||
| 1988 | Pontiac | LeMans | Alternator and Power Steering | |||
| 1988 | Pontiac | Optima | 1.6L | L4 | Alternator and Power Steering | |
| 1987 | Ford | Escort | 1.9L | L4 | Air Conditioning and Alternator | Serpentine Belt for vehicles with Factory Air |
| 1987 | Mazda | 626 | Alternator and Power Steering | Fits vehicles without air conditioning. | ||
| 1987 | Mercury | Lynx | 1.9L | L4 | Air Conditioning and Alternator | Serpentine Belt for vehicles with Factory Air |
| 1986 | Ford | Escort | 1.9L | L4 | Air Conditioning and Alternator | Serpentine Belt for vehicles with Factory Air |
| 1986 | Mazda | 626 | Alternator and Power Steering | Fits vehicles without air conditioning. | ||
| 1986 | Mercury | Lynx | 1.9L | L4 | Air Conditioning and Alternator | Serpentine Belt for vehicles with Factory Air |
| 1985 | Ford | Escort | 1.6L | L4 | Air Conditioning and Alternator | Serpentine Belt for vehicles with Factory Air |
| 1985 | Ford | Escort | 1.9L | L4 | Air Conditioning and Alternator | Serpentine Belt for vehicles with Factory Air |
| 1985 | Mercury | Lynx | 1.6L | L4 | Air Conditioning and Alternator | Serpentine Belt for vehicles with Factory Air |
| 1985 | Mercury | Lynx | 1.9L | L4 | Air Conditioning and Alternator | Serpentine Belt for vehicles with Factory Air |
| 1985 | Porsche | 944 | Alternator and Air Conditioning | 5 Rib Belt | ||
| 1984 | Ford | Escort | 1.6L | L4 | Air Conditioning and Alternator | Serpentine Belt for vehicles with Factory Air |
| 1984 | Mercury | Lynx | 1.6L | L4 | Air Conditioning and Alternator | Serpentine Belt for vehicles with Factory Air |
| 1984 | Porsche | 944 | Alternator and Air Conditioning | |||
| 1983 | Porsche | 944 | Alternator 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.