OE Quality
60-Day Returns

Gates K100874HD Serpentine Belt
Reliable Heavy Duty Serpentine Belt for Automotive Applications
The Gates FleetRunner Heavy Duty Micro-V Belt (Part Number K100874HD) is engineered to deliver consistent performance in demanding automotive environments. Designed with durable materials and precise dimensions, this serpentine belt supports accessory drive systems in various vehicle makes and models requiring a heavy duty solution.
- Top width: 1.367 inches (35 mm)
- Effective length: 87.4 inches (2220 mm)
- Outside circumference: 88 inches (2235 mm)
- 10 ribs for optimal grip and power transmission
- Constructed with EPDM belt material and polyester cord for enhanced durability
- Cross section designation: K
- OE improved comparison rating for reliable fit and function
About the FleetRunner Heavy Duty Micro-V Belt Line
The FleetRunner Heavy Duty Micro-V Belt line by Gates is designed specifically for commercial and heavy duty automotive applications. These belts feature advanced EPDM rubber compounds and polyester cords to resist heat, wear, and environmental factors. The K100874HD model exemplifies this line’s focus on durability and consistent performance in accessory drive belt systems.
Product Details and Specifications
This automotive v-ribbed belt features a 10-rib design that ensures efficient power transfer to engine accessories such as alternators, water pumps, and air conditioning compressors. The EPDM (ethylene propylene diene monomer) belt material offers resistance to heat and ozone, extending belt life under heavy duty conditions. The polyester cord reinforcement provides tensile strength and flexibility, maintaining belt integrity during operation. With an effective length of 87.4 inches and a top width of 1.367 inches, this serpentine belt fits applications requiring a K-section belt with these precise dimensions.
Common Applications and Problem Solving
- Replacement for worn or cracked serpentine belts in heavy duty vehicles
- Addresses slipping or squealing belts due to material degradation
- Prevents accessory drive failures caused by belt breakage
- Improves belt longevity in high-heat engine compartments
- Compatible with vehicles requiring a 10-rib K-section belt of 87.4 inches length
Installation Notes and Tips
Ensure proper belt routing according to the vehicle’s accessory drive diagram before installation. Check pulleys and tensioners for wear or damage to avoid premature belt failure. Use a belt tension gauge or follow manufacturer torque specifications to achieve correct tension. The Gates FleetRunner Heavy Duty Micro-V Belt (K100874HD) is designed for direct replacement and should align precisely with OEM specifications.
Quality Assurance and Warranty
Gates provides an OE improved comparison rating for this belt, indicating it meets or exceeds original equipment standards. Manufactured with high-quality EPDM and polyester materials, the K100874HD belt is built for durability and consistent performance. Please refer to Gates’ warranty policy for specific coverage details.
| Brand | Gates |
| Part Number | K100874HD |
| Top Width | 1.367 |
| Top Width | 35 |
| Cord Material | Polyester |
| Cross Section Designation | K |
| Effective Length | 2220 |
| Effective Length | 87.4 |
| Outside Circumference | 2235 |
| Outside Circumference | 88 |
| Type | Automotive v-ribbed belt (heavy duty) |
| Rib Quantity | 10 |
| 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 0 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|
* 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.