Gates 90K-39258 Serpentine Belt Drive Component Kit

Reliable Accessory Belt Drive Kit for Toyota 4Runner, FJ Cruiser, and Tundra

The Gates Accessory Belt Drive Kit 90K-39258 is designed to provide a complete serpentine belt drive solution for select Toyota models. This kit includes a high-quality belt, tensioner, and three idler pulleys engineered to meet the specific requirements of the Toyota 4Runner, FJ Cruiser, and Tundra.

• Complete serpentine belt drive component kit including belt, tensioner, and three idler pulleys
• Belt outside circumference: 85.25 inches (2164 mm)
• Belt top width: 0.947 inches (24 mm)
• Tensioner assembly part number: 39258
• Idler pulleys part numbers: two 36173 and one 36174
• Compatible with Toyota 4Runner, FJ Cruiser, and Tundra models

About the Gates Accessory Belt Drive Kit

The Gates Accessory Belt Drive Kit line offers a comprehensive solution for accessory drive systems, combining all necessary components into one kit. This approach ensures proper fitment and compatibility, reducing the risk of premature wear or failure. The 90K-39258 kit is tailored to maintain optimal belt tension and alignment, which is critical for the efficient operation of engine accessories in Toyota vehicles.

Detailed Product Description

This serpentine belt drive component kit includes a belt with an outside circumference of 85.25 inches (2164 mm) and a top width of 0.947 inches (24 mm), designed to match the original equipment specifications. The kit also features a tensioner assembly (part number 39258) and three idler pulleys (two with part number 36173 and one with part number 36174) to ensure smooth belt routing and tension. These components work together to maintain proper accessory drive function, reducing noise and wear while supporting the alternator, power steering pump, and other engine-driven accessories.

Common Applications and Issues Addressed

• Replacement of worn or cracked serpentine belts on Toyota 4Runner, FJ Cruiser, and Tundra
• Resolving belt slippage or squealing noises due to tensioner or idler pulley wear
• Addressing accessory drive system failures caused by misaligned or damaged pulleys
• Preventing engine accessory malfunctions related to belt drive component degradation
• Maintaining proper belt tension to extend the life of engine accessories

Installation Notes and Tips

When installing the Gates Accessory Belt Drive Kit 90K-39258, ensure all old components are fully removed and the mounting surfaces are clean. Verify the belt routing matches the vehicle’s service manual specifications. Proper torque on the tensioner assembly and idler pulleys is essential to avoid premature wear. It is recommended to inspect related components such as the water pump and alternator pulley during installation for any signs of damage.

Quality Assurance and Warranty

Gates manufactures the Accessory Belt Drive Kit 90K-39258 to meet or exceed OEM standards for durability and performance. Each component undergoes rigorous quality control to ensure reliable operation in Toyota 4Runner, FJ Cruiser, and Tundra vehicles. Warranty coverage details should be confirmed with the product documentation or authorized Gates distributors.