Gates 90K-39381A Serpentine Belt Drive Component Kit

Reliable Serpentine Belt Drive Kit for BMW Models

The Gates Accessory Belt Drive Kit 90K-39381A is designed to provide precise fitment and dependable performance for select BMW vehicles. Engineered to meet OEM specifications, this serpentine belt drive component kit ensures optimal accessory drive system operation for models like the BMW 230i, 330i, and 430i series.

• Includes a serpentine belt with an outside circumference of 1179 mm (46.418 inches)
• Belt top width measures 20 mm (0.807 inches) for accurate fit
• Comes with a tensioner assembly, part number 39381, for proper belt tension
• Compatible with BMW 230i, 230i xDrive, 330i, 330i GT xDrive, 330i xDrive, 430i, 430i Gran Coupe, 430i xDrive, and 430i xDrive Gran Coupe
• Part number 90K-39381A ensures correct identification and fitment

About the Gates Accessory Belt Drive Kit

The Gates Accessory Belt Drive Kit line focuses on providing complete serpentine belt drive system components tailored for specific vehicle applications. This kit combines a high-quality belt and a matching tensioner assembly to maintain proper belt tension and alignment, which is critical for the efficient operation of engine accessories. The 90K-39381A kit is engineered to meet the demands of BMW’s accessory drive systems, ensuring compatibility and durability.

Detailed Product Description

This serpentine belt drive component kit includes a belt with an outside circumference of 1179 mm (46.418 inches) and a belt top width of 20 mm (0.807 inches), matching the exact specifications required for the listed BMW models. The included tensioner assembly (part number 39381) is designed to maintain optimal belt tension, reducing the risk of slippage or premature wear. The belt itself is identified by part number K060458, ensuring it meets Gates’ quality standards. This kit is ideal for maintaining or restoring the accessory drive system’s performance in BMW 230i, 330i, and 430i variants, including xDrive and Gran Coupe models.

Common Applications and Issues Addressed

• Replacement of worn or cracked serpentine belts causing accessory noise or failure
• Resolving belt slippage due to tensioner wear or failure
• Addressing accessory drive system malfunctions affecting alternator, power steering, or AC operation
• Preventing premature belt wear from improper tension or misalignment
• Maintaining proper engine accessory function in BMW 230i, 330i, and 430i models

Installation Notes and Tips

• Verify compatibility with your specific BMW model and engine configuration before installation
• Inspect pulleys and accessory components for wear or damage during replacement
• Use proper tools to relieve tension on the old belt and install the new tensioner assembly
• Ensure the belt is routed correctly according to the vehicle’s belt routing diagram
• After installation, check belt alignment and tension to prevent premature wear

Quality Assurance and Warranty

Gates manufactures the Accessory Belt Drive Kit 90K-39381A to meet stringent quality standards, ensuring reliable performance and durability. The components are engineered to OEM specifications for fit and function. Warranty coverage details should be confirmed with the original product documentation or supplier, as they may vary by region and application.