SKU: PTR05-0929
MPN: 05-0929
The Gilmer Belt 390-L-100 by Peterson Fluid is a precision synchronous drive belt engineered for high-performance engine accessory drive systems. This serpentine belt is designed for applications requiring reliable power transmission between the crankshaft and auxiliary components such as alternators, water pumps, power steering pumps, and compressors. The Gilmer Belt 390-L-100 serves automotive enthusiasts, engine builders, and professional mechanics who demand OEM-quality durability and precise timing accuracy in demanding driving conditions.
This belt features Peterson Fluid's trademark synchronous tooth profile, which ensures positive engagement with corresponding pulleys without slipping or belt stretch over extended use. The 390mm effective length accommodates compact engine bay layouts while maintaining optimal tension characteristics across the drive system. The single-rib (L-profile) design minimizes friction loss and reduces heat generation, allowing for efficient power delivery at sustained RPM levels. The compact footprint of 4 x 1 x 9 inches and lightweight 0.22 lb construction make installation straightforward, while the belt's composition resists degradation from oil exposure, heat cycling, and UV radiation—critical factors in high-output applications.
The Gilmer Belt 390-L-100 is ideal for street performance vehicles, race engines, and custom automotive builds where OEM serpentine belts fall short of reliability demands. Installers should verify pulley compatibility with the 390mm belt length and confirm L-profile pulley configuration before ordering. This belt integrates seamlessly with Peterson Fluid's complete line of accessory drive components, making it an essential upgrade for builders seeking consistent throttle response and reduced accessory drag. Proper belt tension maintenance—typically 60–80 pounds of deflection—ensures maximum lifespan and peak accessory performance. For sale for those upgrading from stock rubber belts to performance-grade synchronous drive systems.
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