Gates 90K-38221 Serpentine Belt Drive Component Kit - Alternator or Water Pump and Power Steering

Reliable Accessory Belt Drive Kit for BMW Vehicles

The Gates Accessory Belt Drive Kit 90K-38221 is designed to provide a complete serpentine belt drive solution for various BMW models. This kit includes a belt, tensioner, and two idler pulleys engineered to meet precise specifications for optimal performance and durability.

• Complete serpentine belt drive component kit including belt, tensioner assembly, and two idler pulleys
• Belt outside circumference: 1553 mm (61.151 inches)
• Belt top width: 20 mm (0.807 inches)
• Tensioner assembly part number: 38221
• Idler pulleys part numbers: 38069 and 38071
• Compatible with multiple BMW models including 320i, 328i, 330i, X3, X5, and Z3

About the Gates Accessory Belt Drive Kit Product Line

The Gates Accessory Belt Drive Kit product line offers comprehensive solutions for serpentine belt systems, combining high-quality belts with matching tensioners and idler pulleys. This integrated approach ensures proper belt tension and alignment, reducing wear and improving the reliability of the accessory drive system. The 90K-38221 kit is tailored to fit specific BMW applications, providing a matched set of components designed to work together seamlessly.

Detailed Product Description

This serpentine belt drive component kit features a belt with an outside circumference of 1553 mm (61.151 inches) and a top width of 20 mm (0.807 inches), ensuring precise fitment and efficient power transmission. The included tensioner assembly (part number 38221) maintains optimal belt tension, while the two idler pulleys (part numbers 38069 and 38071) guide the belt smoothly around the accessory drive system. The belt included in this kit is identified by part number K060605, matching the exact specifications required for the compatible BMW models.

Common Applications and Issues Addressed

• Replacement of worn or cracked serpentine belts on BMW 320i, 328i, 330i, X3, X5, and Z3 models
• Resolving belt slippage or squealing noises caused by tensioner or idler pulley wear
• Addressing accessory drive system failures due to improper belt tension or misalignment
• Preventing premature belt wear by installing matched tensioner and idler components
• Maintaining reliable operation of alternator, power steering, and air conditioning systems

Installation Notes and Tips

Ensure the vehicle is turned off and cooled before beginning installation. Remove the old belt, tensioner, and idler pulleys carefully, noting their routing and orientation. Install the Gates Accessory Belt Drive Kit components according to the vehicle manufacturer’s specifications, verifying the belt tension and alignment after installation. Using the correct tools to relieve tension on the tensioner assembly will facilitate a smooth installation process.

Quality Assurance and Warranty

Gates manufactures the Accessory Belt Drive Kit 90K-38221 to meet or exceed OEM standards for fit, form, and function. Each component undergoes rigorous quality control to ensure durability and reliable performance. While specific warranty details are not provided here, Gates typically offers a limited warranty covering defects in materials and workmanship for their belt drive kits.