Gates K120878 Serpentine Belt - Fan and Alternator

Reliable Serpentine Belt for Automotive Applications

The Gates Premium OE Micro-V Belt K120878 is engineered to deliver consistent performance in accessory drive belt systems. Designed with durable materials and precise dimensions, this serpentine belt supports efficient engine operation in various vehicle makes and models.

• Top width of 1.647 inches (42 mm) for accurate fitment
• Effective length of 87.82 inches (2231 mm) ensuring proper routing
• 12 ribs for optimal grip and power transmission
• Constructed with EPDM belt material and polyester cord for durability
• Cross section designation K, compatible with standard automotive v-ribbed belt systems

Detailed Features of the Gates Premium OE Micro-V Belt

This serpentine belt features a 12-rib design that provides smooth and efficient power transfer to engine accessories such as the alternator, power steering pump, and air conditioning compressor. The belt’s EPDM (ethylene propylene diene monomer) material offers resistance to heat, ozone, and wear, extending service life. Reinforced with polyester cords, the belt maintains strength and flexibility under varying engine conditions. With an outside circumference of approximately 88.39 inches (2245 mm), the K120878 belt fits specific vehicle applications requiring a K-section belt with these dimensions.

About the Premium OE Micro-V Belt Product Line

The Gates Premium OE Micro-V Belt line is designed to meet or exceed original equipment (OE) performance standards. This product line focuses on delivering reliable fit and function for automotive v-ribbed belt systems, ensuring compatibility with factory specifications. The K120878 part is part of this line, providing a balance of durability and performance for vehicles requiring a K-section serpentine belt.

Common Applications and Issues Addressed

• Replacement for worn or cracked serpentine belts in compatible vehicles
• Eliminates belt slippage and squealing noises
• Prevents accessory drive system failures due to belt degradation
• Maintains proper tension and alignment in the belt drive system
• Supports efficient operation of alternator, power steering, and A/C components

Installation Notes and Tips

Ensure the belt routing matches the vehicle’s belt diagram before installation. Verify the belt length and rib count correspond to the original equipment specifications. Use proper tensioning tools to avoid over-tightening, which can cause premature wear. Inspect pulleys and tensioners for wear or damage during replacement to maintain system integrity.

Quality Assurance and Warranty

The Gates Premium OE Micro-V Belt K120878 is manufactured to meet OE performance standards, providing reliable durability and consistent operation. Gates typically offers a limited warranty on their belts against defects in material and workmanship; please refer to official Gates documentation for specific warranty details.