Gates K040389SF Serpentine Belt - Air Compressor

Reliable Serpentine Belt for Automotive Applications

The Gates Premium OE Stretch Fit Micro-V Belt K040389SF is engineered to provide precise fit and dependable performance for various automotive vehicles. Designed with durable materials and exacting specifications, this serpentine belt supports efficient accessory drive system operation.

• Top width options: 0.56 inch and 14 mm for versatile fitment
• Cord material constructed from high-strength nylon for durability
• Cross section designation: K, suitable for specific automotive applications
• Effective length of approximately 38.97 inches (990 mm) ensuring proper tension
• Outside circumference measures 39.5 inches (1003 mm) for accurate fit
• Constructed with EPDM belt material for resistance to heat and wear
• Features 4 ribs for optimal grip and power transmission
• Requires a special installation tool for proper stretch fit installation
• Includes detailed installation instructions (Sheet I) for guidance
• OE comparison rating: exact and performance matched to original equipment

About the Premium OE Stretch Fit Micro-V Belt Line

The Premium OE Stretch Fit Micro-V Belt line by Gates is designed to meet or exceed original equipment specifications. This product line focuses on stretch fit technology, which allows for a precise and secure fit without the need for belt tensioners in some applications. The K040389SF part number represents a belt engineered for consistent performance and longevity, making it suitable for vehicles requiring a K-section automotive v-ribbed belt.

Product Application and Problem Solving

This serpentine belt is commonly used in accessory drive belt systems to power components such as alternators, power steering pumps, and air conditioning compressors. It is compatible with various automotive makes and models that require a K-section stretch fit belt with the specified dimensions.

• Replaces worn or cracked belts causing accessory drive failure
• Addresses slipping or squealing noises due to belt wear
• Prevents loss of power to engine accessories from belt breakage
• Ensures proper tension and alignment in stretch fit belt systems
• Improves belt longevity in high-heat or demanding driving conditions

Installation Notes and Tips

Installation of the Gates K040389SF belt requires a special installation tool to properly stretch and fit the belt onto the pulleys. Follow the included Sheet I installation instructions carefully to avoid damage to the belt or accessory components. Proper installation ensures optimal belt tension and performance.

Quality Assurance and Warranty

Gates Premium OE Stretch Fit Micro-V Belts are manufactured to meet stringent quality standards and OE comparison ratings, ensuring reliable performance. While specific warranty details are not provided, Gates products typically come with manufacturer-backed quality assurance to support durability and fitment accuracy.