OE Quality
60-Day Returns

Gates K080645HD Serpentine Belt - Fan or Fan and Alternator
Reliable Serpentine Belt for Dodge D250, D350, W250, and W350
The Gates FleetRunner Heavy Duty Micro-V Belt K080645HD is engineered to provide durable and consistent performance for heavy-duty Dodge trucks. Designed specifically for models like the D250, D350, W250, and W350, this serpentine belt ensures efficient power transmission to accessory components under demanding conditions.
- Top width of 1.087 inches (28 mm) for precise fitment
- Effective length of approximately 64.67 inches (1643 mm) for accurate replacement
- Constructed with polyester cord material for enhanced strength and flexibility
- Made from EPDM belt material for resistance to heat, ozone, and wear
- Features 8 ribs for optimal grip and power transfer
- Cross section designation: K, suitable for heavy-duty automotive applications
- Outside circumference of about 65.24 inches (1657 mm) ensuring proper tension and alignment
About the FleetRunner Heavy Duty Micro-V Belt Line
The FleetRunner Heavy Duty Micro-V Belt line by Gates is designed to meet the rigorous demands of commercial and fleet vehicles. This product line focuses on durability and improved performance over original equipment, making it suitable for heavy-duty applications such as those found in Dodge D250, D350, W250, and W350 trucks. The K080645HD belt offers an OE improved rating, reflecting enhancements in material and design for extended service life.
Product Details and Specifications
This automotive v-ribbed belt is constructed with EPDM material, known for its resistance to heat, ozone, and wear, which helps maintain belt integrity over time. The polyester cord material provides tensile strength and flexibility, reducing the risk of belt failure under heavy loads. With 8 ribs and a K cross section, the belt delivers consistent power transmission to accessory drive components such as alternators, water pumps, and power steering pumps. The precise dimensions, including a top width of 1.087 inches and an effective length of 64.67 inches, ensure compatibility with specified Dodge truck models.
Common Applications and Problem Solving
- Replacement for worn or cracked serpentine belts on Dodge D250, D350, W250, and W350
- Addresses slipping or squealing belts caused by material degradation
- Prevents accessory drive failures due to belt breakage or stretching
- Improves belt longevity in heavy-duty and fleet vehicle environments
- Maintains proper tension and alignment for efficient engine accessory operation
Installation Notes and Tips
When installing the Gates FleetRunner Heavy Duty Micro-V Belt K080645HD, ensure the belt routing matches the vehicle’s accessory drive diagram. Inspect pulleys and tensioners for wear or damage before installation to avoid premature belt failure. Proper tensioning is critical; use a belt tension gauge or follow manufacturer specifications to achieve optimal performance. Regular inspection and maintenance can extend belt life and prevent unexpected downtime.
Quality Assurance and Warranty
Gates manufactures the FleetRunner Heavy Duty Micro-V Belt to meet stringent quality standards, ensuring reliable performance in demanding automotive applications. This belt carries an OE improved rating, indicating enhancements over original equipment specifications. While specific warranty details are not provided here, Gates products typically come with manufacturer-backed warranties covering defects in materials and workmanship.
| Brand | Gates |
| Part Number | K080645HD |
| Position | FleetRunner Heavy Duty Micro-V Belt, Fan and Fan and Alternator |
| Top Width | 1.087 |
| Top Width | 28 |
| Cord Material | Polyester |
| Cross Section Designation | K |
| Effective Length | 1643 |
| Effective Length | 64.67 |
| Outside Circumference | 1657 |
| Outside Circumference | 65.237 |
| Type | Automotive v-ribbed belt (heavy duty) |
| Rib Quantity | 8 |
| Washer Pump Included | Epdm |
| Belt Material | Epdm |
| Cord Material | Polyester |
| OE Comparison Rating | Oe improved |
| Section | K |
| Type | Automotive v-ribbed belt (heavy duty) |
This part fits 20 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1993 | Dodge | D250 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; W/O Intercooler; FleetRunner Heavy Duty Micro-V Belt |
| 1993 | Dodge | D350 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; W/O Intercooler; FleetRunner Heavy Duty Micro-V Belt |
| 1993 | Dodge | W250 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; W/O Intercooler; FleetRunner Heavy Duty Micro-V Belt |
| 1993 | Dodge | W350 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; W/O Intercooler; FleetRunner Heavy Duty Micro-V Belt |
| 1992 | Dodge | D250 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; W/O Intercooler; FleetRunner Heavy Duty Micro-V Belt |
| 1992 | Dodge | D350 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; W/O Intercooler; FleetRunner Heavy Duty Micro-V Belt |
| 1992 | Dodge | W250 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; W/O Intercooler; FleetRunner Heavy Duty Micro-V Belt |
| 1992 | Dodge | W350 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; W/O Intercooler; FleetRunner Heavy Duty Micro-V Belt |
| 1991 | Dodge | D250 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; W/O Intercooler; FleetRunner Heavy Duty Micro-V Belt |
| 1991 | Dodge | D350 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; W/O Intercooler; FleetRunner Heavy Duty Micro-V Belt |
| 1991 | Dodge | W250 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; W/O Intercooler; FleetRunner Heavy Duty Micro-V Belt |
| 1991 | Dodge | W350 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; W/O Intercooler; FleetRunner Heavy Duty Micro-V Belt |
| 1990 | Dodge | D250 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; W/O Intercooler; FleetRunner Heavy Duty Micro-V Belt |
| 1990 | Dodge | D350 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; W/O Intercooler; FleetRunner Heavy Duty Micro-V Belt |
| 1990 | Dodge | W250 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; W/O Intercooler; FleetRunner Heavy Duty Micro-V Belt |
| 1990 | Dodge | W350 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; W/O Intercooler; FleetRunner Heavy Duty Micro-V Belt |
| 1989 | Dodge | D250 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; May 23, 1989 & Newer; FleetRunner Heavy Duty Micro-V Belt |
| 1989 | Dodge | D350 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; May 23, 1989 & Newer; FleetRunner Heavy Duty Micro-V Belt |
| 1989 | Dodge | W250 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; May 23, 1989 & Newer; FleetRunner Heavy Duty Micro-V Belt |
| 1989 | Dodge | W350 | 5.9L | L6 | DIESEL | N/A | W/O A.C.; May 23, 1989 & Newer; FleetRunner Heavy Duty Micro-V Belt |
* 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.