Gates K040359SF Serpentine Belt - Air Conditioning

Reliable Serpentine Belt for Ford and Lincoln Vehicles

The Gates Premium OE Stretch Fit Micro-V Belt (Part Number K040359SF) is engineered to provide precise fit and dependable performance for select Ford and Lincoln models. Designed as a stretch fit serpentine belt, it ensures optimal power transmission and durability in demanding automotive applications.

• Top width options: 0.56 inch and 14 mm for accurate fitment
• Cord material constructed from durable nylon for strength
• Cross section designation: K, compatible with K-section pulleys
• Effective length available in 35.91 inches (912 mm) for proper routing
• Outside circumference measures 36.5 inches (927 mm)
• Constructed with EPDM belt material for heat and wear resistance
• Includes installation instructions (Sheet K) and requires a 3 mm zip tie for installation
• OE comparison rating: exact and performance equivalent to original equipment
• Features 4 ribs for efficient power transfer

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, providing a reliable replacement for automotive v-ribbed belts. This product line focuses on stretch fit technology, which simplifies installation by eliminating the need for belt tensioners or complex adjustments. The K040359SF model is part of this line, offering a precise fit and durable materials tailored for Ford and Lincoln vehicles.

Product Details and Specifications

This serpentine belt is specifically designed for automotive applications requiring a K-section v-ribbed belt with four ribs. The belt’s nylon cord material enhances tensile strength, while the EPDM rubber compound resists heat, ozone, and wear, extending service life. With an effective length of 35.91 inches (912 mm) and an outside circumference of 36.5 inches (927 mm), it fits accessory drive systems on Ford Expedition, Explorer, F-150, Mustang, and Lincoln Navigator models. The belt’s top width is available in both 0.56 inch and 14 mm measurements to ensure compatibility with original pulleys.

Common Applications and Issues Addressed

• Replacement for worn or cracked serpentine belts on Ford and Lincoln vehicles
• Resolves belt slippage and squealing noises caused by stretched or damaged belts
• Prevents accessory drive failures affecting alternator, power steering, and air conditioning
• Maintains proper tension and alignment in accessory drive belt systems
• Supports reliable engine performance by ensuring consistent power delivery

Installation Notes and Tips

Installation of the Gates K040359SF belt requires a 3 mm zip tie to hold the belt in place during stretch fit installation. Detailed instructions are included in Sheet K, which guides proper routing and fitting procedures. The stretch fit design eliminates the need for belt tensioners, simplifying the replacement process. Ensure the belt is properly seated on all pulleys and verify correct rib alignment before finalizing installation.

Quality Assurance and Warranty

Gates Premium OE Stretch Fit Micro-V Belts are manufactured to meet original equipment standards, ensuring reliable performance and durability. This belt carries an OE comparison rating for exact and performance equivalence, providing confidence in fit and function. While specific warranty details are not provided, Gates products typically adhere to stringent quality controls consistent with automotive industry requirements.