Gates K120784 Serpentine Belt - Fan and Water Pump

Reliable Serpentine Belt for Automotive Accessory Drive Systems

The Gates Premium OE Micro-V Belt K120784 is engineered to deliver consistent performance in automotive accessory drive belt systems. Designed with durable materials and precise dimensions, this serpentine belt supports efficient engine operation and accessory function.

• Top width of 1.647 inches (42 mm) for accurate fitment
• Effective length of 78.44 inches (1992 mm) ensuring proper belt tension
• 12 ribs for optimal grip and power transmission
• Constructed with EPDM belt material and polyester cord for enhanced durability
• Cross section designation K, compatible with standard automotive v-ribbed belt systems

About the Gates Premium OE Micro-V Belt Line

The Premium OE Micro-V Belt line by Gates is designed to meet original equipment (OE) performance standards. This product line focuses on delivering reliable fit and function for automotive v-ribbed belt applications, using high-quality EPDM materials and polyester cords to resist wear and extend service life. The K120784 part is a precise replacement option within this line, engineered to maintain proper accessory drive system operation.

Technical Details and Specifications

The K120784 serpentine belt features a top width of 1.647 inches (42 mm) and an effective length of 78.44 inches (1992 mm), with an outside circumference of approximately 79 inches (2007 mm). Its 12-rib design ensures consistent contact with pulleys, reducing slippage and noise. The EPDM belt material offers resistance to heat, ozone, and wear, while the polyester cord provides tensile strength and flexibility. This belt is classified under the K cross section, suitable for standard automotive v-ribbed belt systems.

Common Applications and Problem Solving

• Replacement for worn or cracked serpentine belts in vehicles requiring a K section belt
• Addresses belt slippage and squealing noises caused by degraded belt material
• Prevents accessory drive failures by maintaining proper tension and grip
• Suitable for vehicles experiencing reduced alternator, power steering, or air conditioning performance due to belt wear
• Compatible with automotive makes and models that specify a 1.647 inch width and 78.44 inch effective length serpentine belt

Installation Notes and Tips

Ensure the belt routing matches the vehicle manufacturer’s 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 ensure optimal belt performance.

Quality Assurance and Warranty

The Gates Premium OE Micro-V Belt K120784 is manufactured to meet OE performance standards, providing reliable durability and consistent operation. Gates backs this product with quality control processes to ensure fit and function. Please refer to Gates’ official warranty policy for specific coverage details.