Roadmax 6K445AP Serpentine Belt - Alternator and Air Conditioning, Alternator and Air Pump or Fan and Alternator

Roadmax 6K445AP Serpentine Belt Overview

The Roadmax 6K445AP is a standard automotive V-ribbed belt built with EPDM and polyester cord for everyday accessory drive service. It is sized for vehicles that use a 6-rib serpentine belt with a 20 mm top width and 1133 mm effective length.

Roadmax positions this Automotive V-Ribbed Belt (Standard) line for budget-conscious buyers who want dependable quality without stepping up to a premium-performance belt. The 6K445AP is a direct-fit style replacement for many Volkswagen, Audi, and Porsche applications, including popular VW GTI, Golf R, Jetta, Tiguan, and Audi Q3 fitments.

Key Features

• EPDM construction for modern accessory drive belt service
• Polyester cord material for belt stability
• 6-rib design for compatible serpentine drive systems
• 20 mm top width and 1133 mm effective length
• Outside circumference of 1148 mm
• Standard V-ribbed belt format for OE-style replacement use

Detailed Product Description

Roadmax 6K445AP is a serpentine belt for accessory drive systems that require a K-section, 6-rib profile. The belt measures 44.62 inches effective length and 45.187 inches outside circumference, making it a precise replacement choice for vehicles that call for this size specification. This part cross-references Gates K060445 for the same application.

Compatible With 2015-2025 Volkswagen GTI, 2015-2019 Volkswagen Golf R, 2019-2025 Audi Q3, and 2017-2021 Porsche Macan applications, this belt also appears in fitments for Volkswagen Jetta, Tiguan, Atlas, Atlas Cross Sport, Arteon, Golf, Golf Alltrack, and Golf SportWagen, plus Audi A3, A4, A5, A6, Q5, Q7, S3, TT, TT Quattro, and TTS Quattro. The Roadmax 6K445AP part number is also useful when searching for OE-style replacement options across these platforms.

Common Problems This Belt Can Address

• Squealing or chirping from a worn accessory drive belt
• Cracking, glazing, or visible wear on the belt ribs
• Loss of proper drive to alternator, A/C compressor, or other belt-driven accessories
• Belt stretch or incorrect belt length after service
• Replacement needs during routine maintenance on high-mileage vehicles

Installation Notes and Tips

Verify the belt size against the existing belt routing and OE reference before installation. Confirm the 6-rib profile, 20 mm top width, and 1133 mm effective length match the vehicle’s accessory drive system. Inspect pulleys, tensioners, and idlers for wear before installing the new belt, since damaged components can shorten belt life and affect tracking.

For fitment-based searches, this part is commonly selected for 2015-2025 Volkswagen GTI, 2019-2025 Audi Q3, and 2017-2021 Porsche Macan applications, along with other listed Audi and Volkswagen models. Roadmax 6K445AP should be installed on the correct routing path for the specific engine and accessory layout.

Quality Assurance

Roadmax’s Automotive V-Ribbed Belt (Standard) line is aimed at practical replacement service, using EPDM belt material and polyester cord construction for standard-duty automotive applications. The product is built to match the size and rib configuration required by the listed fitments.