9L-6639 V-Belt for Caterpillar Engines 3408 3412 Trucks 773B 769C Loaders 988B

9L-6639 V-Belt – High-Quality Aftermarket Replacement for Caterpillar Engines

Ensure reliable power transmission in your Caterpillar engine with this premium aftermarket 9L-6639 V-belt. Engineered as a direct OEM replacement, it provides excellent grip and durability for fan/alternator drives, preventing slippage and maintaining efficient operation in heavy-duty industrial, mining, and construction applications.

Key Benefits for Contractors and Operators

• Prevents Slippage & Power Loss: High-strength construction delivers consistent tension and grip for optimal accessory drive performance.
• Direct Fit Installation: Matches genuine Cat specs for quick, no-modification replacement – easy to install during routine belt service.
• Built Tough for Heavy Duty Use: Heat- and wear-resistant material withstands extreme conditions for long-lasting reliability on job sites.
• Cost-Effective Alternative: OEM-level quality at aftermarket pricing – ideal for fleet maintenance and budget-conscious operations.
• Fast Shipping: In stock and ready to ship within 1-3 days.

Compatible Caterpillar Applications

This V-belt is commonly used in 3408 and 3412 engines for models including (verify your parts manual for exact fit):

• Engines: 3408, 3408B, 3408C, 3412, 3412C, 3412E
• Trucks: 769C, 769D, 773B, 773D, 773E, 775D, 775E
• Wheel Loaders: 988B, 988F, 988F II, 992C, 992D
• Wheel Dozers: 834B
• Other: Various gen sets, industrial engines, and petroleum applications

Specifications

Questions? Contact us for fitment confirmation or bulk pricing. We stand behind our parts with fast shipping and easy returns.