OE Quality
60-Day Returns

Dayco 5080663 Serpentine Belt
Durable Serpentine Belt for Cadillac, Dodge, and Ford Vehicles
The Dayco 5080663 serpentine belt is engineered to provide reliable accessory drive performance for select Cadillac CTS, Dodge D250/D350, and Ford F-150/W250/W350 models. 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: 1.10 inches ensuring proper fit and tension
- Effective Length: Approximately 66.25 inches (1682.75 mm) for precise compatibility
- Rib Quantity: 8 ribs with a straight rib profile for smooth power transmission
- Cross Section: K-section design optimized for accessory drive systems
- Operating Temperature Range: -45°C to 212°F (-42.7°C to 100°C) suitable for diverse climates
- Complies with SAE J1459 and SAE J2432 standards for quality and performance
Technical Overview and Compatibility
The Dayco 5080663 serpentine belt features a black EPDM rubber compound reinforced with aramid fibers, which enhances tensile strength and resistance to heat and abrasion. Its 8-rib K-section design ensures efficient power transfer to engine accessories such as the alternator, power steering pump, and air conditioning compressor. The belt’s dimensions, including a top width of 1.10 inches and an effective length of 66.25 inches, are tailored to fit specific vehicle models. This belt is compatible with Cadillac CTS, Dodge D250 and D350 trucks, and Ford F-150, F-150 Heritage, W250, and W350 models, providing a reliable replacement option for maintaining proper accessory drive function.
Common Applications and Problem Resolution
- Replacement for worn or cracked serpentine belts causing accessory slippage
- Restores proper tension and alignment in accessory drive systems
- Addresses belt noise issues such as squealing or chirping under load
- Prevents overheating and accessory failure due to belt degradation
- Ensures consistent power delivery to engine components for optimal performance
Installation Notes and Tips
- Verify vehicle compatibility with the Dayco 5080663 part number before installation
- Inspect pulleys and tensioners for wear or damage during belt replacement
- Use proper belt routing diagrams specific to Cadillac CTS, Dodge D250/D350, or Ford F-150 series
- Ensure correct belt tension to avoid premature wear or slippage
- Consult vehicle service manual for torque specifications and installation procedures
Quality Assurance and Warranty Information
Dayco serpentine belts are manufactured to meet SAE J1459 and SAE J2432 standards, ensuring consistent quality and performance. The 5080663 belt undergoes rigorous testing for durability, heat resistance, and dimensional accuracy. While specific warranty terms may vary, Dayco typically offers coverage against manufacturing defects to support long-term reliability in Cadillac CTS, Dodge D250/D350, and Ford F-150 applications.
| Brand | Dayco |
| Part Number | 5080663 |
| Color | Black |
| Cross Section | K-Section |
| Effective Length | 66.25 |
| Effective Length | 1682.75 |
| Material | EPDM, Aramid Reinforced |
| Maximum Operating Temperature | 100 |
| Maximum Operating Temperature | 212 |
| Minimum Operating Temperature | -45 |
| Minimum Operating Temperature | -42.7 |
| Outside Circumference | 66.88 |
| Outside Circumference | 1698.76 |
| Rib Depth | Standard |
| Rib Profile | Straight Rib |
| Rib Quantity | 8 |
| Standards | SAE J1459, SAE J2432 |
| Top Width | 1.10 |
This part fits 11 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2010 | Cadillac | CTS | 6.2L | V8 | Supercharger | |
| 2004 | Ford | F-150 Heritage | 5.4L | V8 | Supercharger | |
| 2003 | Ford | F-150 | 5.4L | V8 | Supercharger | |
| 2002 | Ford | F-150 | 5.4L | V8 | Supercharger | |
| 2001 | Ford | F-150 | 5.4L | V8 | Supercharger | |
| 2000 | Ford | F-150 | 5.4L | V8 | Supercharger | |
| 1999 | Ford | F-150 | 5.4L | V8 | Supercharger | |
| 1989 | Dodge | D250 | 5.9L | L6 | Main Drive | Fits vehicles without air conditioning. |
| 1989 | Dodge | D350 | 5.9L | L6 | Main Drive | Fits vehicles without air conditioning. |
| 1989 | Dodge | W250 | 5.9L | L6 | Main Drive | Fits vehicles without air conditioning. |
| 1989 | Dodge | W350 | 5.9L | L6 | Main Drive | Fits vehicles without 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.