Roadmax 4K382AP Serpentine Belt

Roadmax 4K382AP Serpentine Belt Overview

The Roadmax 4K382AP is an automotive V-ribbed belt built for drivers who want dependable replacement quality without stepping up to a premium belt line. Made with EPDM and polyester cord reinforcement, it is sized for accessory drive applications across a wide range of BMW, Mercedes-Benz, and older Chrysler, Dodge, Plymouth, Kia, Mitsubishi, Volkswagen, and Chevrolet vehicles.

This Roadmax serpentine belt is part of the Automotive V-Ribbed Belt (Standard) line, a budget-conscious product family focused on practical replacement value. The 4K382AP is a 4-rib belt with a 14 mm top width, 38.14 in effective length, and 38.705 in outside circumference.

Key Features

• EPDM construction for modern accessory drive service
• Polyester cord material for belt stability
• 4-rib, K cross-section design
• 14 mm top width for specified accessory drive systems
• Effective length: 38.14 in (969 mm)
• Outside circumference: 38.705 in (983 mm)
• Cross-references Gates K040382 and Bando 4PK970

Detailed Description

Roadmax 4K382AP is a standard serpentine belt designed for accessory drive system replacement where the original belt specification calls for a 4-rib K-profile belt. The EPDM rubber construction supports everyday engine-bay conditions, while the polyester cord helps maintain belt shape and tracking in service. Use this part when replacing a worn accessory drive belt on applications such as BMW 330e, BMW 530e, BMW X5, Mercedes-Benz AMG GT models, and other listed fitments.

This part cross-references Gates K040382 and Bando 4PK970 for the same application. Search terms such as BMW 330e serpentine belt, Mercedes-Benz AMG GT air conditioning belt, and 2020 BMW X3 4-rib accessory drive belt all point to the same general fitment family for this part number, 4K382AP.

Vehicle Fitment

• Fits 2021-2024 BMW 330e, N/A
• Fits 2021-2024 BMW 330e xDrive, N/A
• Fits 2020-2023 BMW 530e, N/A
• Fits 2020-2023 BMW 530e xDrive, N/A
• Fits 2021-2023 BMW X5, N/A
• Fits 2020-2021 BMW 745e, N/A
• Fits 2020-2021 BMW 745e xDrive, N/A
• Fits 2020-2021 BMW 745Le xDrive, N/A
• Fits 2020 BMW X3, N/A, W/4-Ribbed Belt
• Fits 2023 Mercedes-Benz AMG GT 63 S, Air Conditioning
• Fits 2020-2021 Mercedes-Benz AMG GT 63 S, Air Conditioning
• Fits 2022 Mercedes-Benz SL55 AMG, Air Conditioning
• Fits 2022 Mercedes-Benz SL63 AMG, Air Conditioning
• Fits 2020-2021 Mercedes-Benz AMG GT, Air Conditioning
• Fits 2017 Mercedes-Benz AMG GT, Air Conditioning
• Fits 2020-2021 Mercedes-Benz AMG GT 63, Air Conditioning
• Fits 2021 Mercedes-Benz AMG GT Black Series, Air Conditioning
• Fits 2020-2021 Mercedes-Benz AMG GT C, Air Conditioning
• Fits 2020-2021 Mercedes-Benz AMG GT R, Air Conditioning
• Fits 2020 Mercedes-Benz AMG GT R Pro, Air Conditioning
• Fits 2020 Mercedes-Benz AMG GT S, Air Conditioning
• Fits 2016-2017 Mercedes-Benz AMG GT S, Air Conditioning
• Fits 2011-2012 Chevrolet Spark, Power Steering and Air Conditioning
• Fits 2008-2011 Volkswagen Crafter Van, Hydraulic Pump
• Fits 2003-2005 Kia Rio, Air Conditioning and Power Steering
• Fits 2001-2003 Mitsubishi Montero Sport, Power Steering
• Fits 1999-2001 Kia Sephia, Air Conditioning
• Fits 1994-1995 Dodge Caravan, Water Pump and Alternator
• Fits 1990-1992 Dodge Caravan, Water Pump and Alternator
• Fits 1990-1995 Dodge Dakota, Water Pump and Alternator
• Fits 1994-1995 Plymouth Voyager, Water Pump and Alternator
• Fits 1990-1992 Plymouth Voyager, Water Pump and Alternator
• Fits 1993 Dodge Caravan, Water Pump To Alternator
• Fits 1993 Plymouth Voyager, Water Pump To Alternator
• Fits 1989-1991 Chrysler Daytona, Water Pump and Alternator
• Fits 1989-1991 Chrysler Dynasty, Water Pump and Alternator
• Fits 1989-1991 Chrysler LeBaron, Water Pump and Alternator
• Fits 1989-1991 Chrysler Shadow, Water Pump and Alternator
• Fits 1989-1991 Dodge Daytona, Water Pump and Alternator
• Fits 1989-1991 Dodge Shadow, Water Pump and Alternator
• Fits 1989-1991 Dodge Spirit, Water Pump and Alternator
• Fits 1989-1991 Plymouth Acclaim, Water Pump and Alternator
• Fits 1989-1991 Plymouth Sundance, Water Pump and Alternator
• Fits 1989 Chrysler Phantom, Water Pump and Alternator
• Fits 1989 Dodge Aries, Water Pump and Alternator
• Fits 1989 Dodge Caravan, Fan and Alternator
• Fits 1989 Dodge Dakota, Alternator
• Fits 1989 Dodge Grand Caravan, Fan and Alternator
• Fits 1989 Dodge Lancer, Water Pump and Alternator
• Fits 1989 Plymouth Expo, Water Pump and Alternator
• Fits 1989 Plymouth Reliant, Water Pump and Alternator
• Fits 1989 Plymouth Voyager, Fan and Alternator

Installation Notes and Tips

• Verify the belt profile, rib count, and measured length against the original belt before installation.
• Inspect pulleys, tensioners, and idlers for wear or misalignment before fitting the new belt.
• Confirm whether the application uses the air conditioning, power steering, alternator, water pump, or hydraulic pump drive path listed in the fitment data.
• Route the belt exactly to the vehicle’s accessory drive diagram and check tracking after startup.

Quality Assurance

Roadmax positions the Automotive V-Ribbed Belt (Standard) line as a practical replacement option for customers who want quality at a lower-cost service level than a premium belt. The 4K382AP uses EPDM construction and polyester cord reinforcement for standard accessory drive service.