Gates K060448EST Serpentine Belt

Gates E-Start Serpentine Belt for Audi Applications

The Gates K060448EST is an Automotive V-Ribbed Belt (E-Start) built for stop-start accessory drive systems. It uses EPDM belt material with aramid cord reinforcement and an OE Exact rating for direct-fit replacement needs on select Audi models.

Gates E-Start Micro-V belts are part of the brand’s stop-start belt line, engineered for belt-driven starter generator systems that cycle frequently and demand stable belt performance. This belt is specified for modern Audi A4, A5, A6, Q5, and A7 Sportback applications where the accessory drive must support efficient, quiet operation.

Key Features

• Part number: K060448EST
• Automotive V-Ribbed Belt (E-Start) / serpentine belt
• 6-rib design for the specified accessory drive system
• EPDM belt material for durability in modern engine bay conditions
• Aramid cord material for reinforcement
• OE Exact comparison rating for OE-style fit and function
• Top width: 20 mm (.807 in)
• Effective length: 1139 mm (44.842 in)
• Outside circumference: 1153 mm (45.41 in)
• Section: K

Detailed Description

The Gates K060448EST serpentine belt is sized for E-Start accessory drive systems that use a belt-driven starter generator. Its 6-rib, K-section profile measures 20 mm wide with a 1139 mm effective length, helping maintain proper belt tracking and drive engagement in the specified application. This part cross-references 6K448EST and 06L903137L for the same application.

Compatible With select Audi A4, Audi A4 allroad, Audi A4 Quattro, Audi A5, Audi A5 Quattro, Audi A5 Sportback, Audi A6, Audi A6 Quattro, Audi Q5 PHEV, Audi Q5, Audi Q5 Sportback, and Audi A7 Sportback models across 2020-2025 model years, depending on vehicle configuration. Use the exact vehicle fitment listed below to confirm application before ordering K060448EST.

What This Belt Helps Address

• Squealing or chirping from a worn accessory drive belt
• Cracking, glazing, or rib wear on the existing serpentine belt
• Loss of proper belt tension or tracking in the drive system
• Accessory drive noise during stop-start operation
• Reduced belt performance in E-Start starter-generator systems

Installation Notes and Tips

Verify belt routing, rib count, and length against the vehicle’s service information before installation. Inspect pulleys, tensioners, and idlers for wear or misalignment, since those conditions can shorten belt life. Confirm the application by matching the part number K060448EST to the vehicle’s exact engine and accessory drive setup.

• Fits 2025 Audi A4, N/A
• Fits 2021-2023 Audi A4, N/A
• Fits 2021-2025 Audi A4 allroad, N/A
• Fits 2021-2025 Audi A4 Quattro, N/A
• Fits 2021-2025 Audi A5, N/A
• Fits 2021-2025 Audi A5 Quattro, N/A
• Fits 2021-2025 Audi A5 Sportback, N/A
• Fits 2021-2025 Audi A6, N/A
• Fits 2020-2025 Audi A6 Quattro, N/A
• Fits 2020-2025 Audi Q5 PHEV, N/A
• Fits 2021-2024 Audi Q5, N/A
• Fits 2021-2024 Audi Q5 Sportback, N/A
• Fits 2021-2022 Audi A7 Sportback, N/A

Quality Assurance

Gates is a recognized supplier of OE-style belt drive components, and this belt carries an OE Exact comparison rating for application-specific replacement confidence. The K060448EST is built to meet the demands of modern stop-start systems used in Audi A4 and Audi Q5 platform vehicles, as well as related A5, A6, and A7 Sportback applications.