Gates 90K-39112 Serpentine Belt Drive Component Kit - Alternator or Water Pump and Power Steering

Reliable Serpentine Belt Drive Component Kit for BMW Vehicles

The Gates Accessory Belt Drive Kit 90K-39112 is designed to provide a complete serpentine belt drive solution for select BMW models. This kit includes a high-quality belt, tensioner, and idler pulley engineered to meet precise fitment and performance requirements.

• Includes belt, tensioner assembly (part number 39112), and idler pulley (part number 36369)
• Belt outside circumference: 2007 mm (79.034 inches)
• Belt top width: 20 mm (0.807 inches)
• Compatible with multiple BMW models including 128i, 328i xDrive, 530xi, X3, and X5
• Serpentine belt part number: K060785

About the Gates Accessory Belt Drive Kit

The Gates Accessory Belt Drive Kit line offers comprehensive solutions for accessory drive systems, combining essential components such as belts, tensioners, and idler pulleys. This kit ensures proper belt tension and alignment, which are critical for the efficient operation of engine accessories in BMW vehicles. The 90K-39112 kit is engineered to meet OEM specifications, providing a reliable replacement option for maintaining the accessory drive system.

Detailed Product Description

This serpentine belt drive component kit features a belt with an outside circumference of 2007 mm (79.034 inches) and a top width of 20 mm (0.807 inches), designed to fit a range of BMW models including the 323i, 325xi, 328i, 525i, and X5. The included tensioner assembly (part number 39112) and idler pulley (part number 36369) work together to maintain optimal belt tension and reduce wear. The belt itself (part number K060785) is manufactured to precise dimensions to ensure proper fit and function within the accessory drive system.

Common Applications and Issues Addressed

• Replacement of worn or damaged serpentine belts in BMW 128i, 330i, and X3 models
• Resolving belt slippage or squealing noises caused by tensioner failure
• Addressing accessory drive system misalignment or belt wear
• Preventing engine accessory malfunctions due to belt or pulley issues
• Maintaining proper operation of alternator, power steering, and air conditioning components

Installation Notes and Tips

Ensure the engine is cool before beginning installation. Verify that the belt top width and outside circumference match the original equipment specifications for your BMW model. Properly align the belt on all pulleys and confirm the tensioner assembly is functioning correctly to maintain appropriate belt tension. Refer to the vehicle’s service manual for torque specifications and detailed installation procedures.

Quality Assurance and Warranty

Gates manufactures the Accessory Belt Drive Kit 90K-39112 to meet stringent quality standards, ensuring durability and reliable performance. This kit is engineered to OEM specifications for fit and function. Please consult the product packaging or Gates documentation for specific warranty details.