3.50 Crank Pulley Belt Guide

The Jones Racing Products 3.50 Crank Pulley Belt Guide (BG-6108-C) is a precision belt management component engineered for high-performance engine accessory drive systems. This aluminum belt guide mounts directly to the engine block and maintains proper belt tracking across 26 to 35 tooth HTD (High Torque Drive) pulleys, preventing slippage and lateral deflection under sustained load. Black anodized finish provides corrosion resistance and professional appearance in both street and competition engine bays.

This bolt-on design integrates seamlessly into existing serpentine belt systems without requiring frame modification. The 3.5-inch pulley diameter specification matches late-model crank pulley applications across domestic and import platforms. Weighing just 0.06 lbs, the guide adds negligible mass while distributing belt tension evenly, reducing noise and extending belt longevity. The anodized aluminum construction resists heat cycling and maintains dimensional stability across wide engine compartment temperature ranges.

Operators and engine builders installing performance accessory packages—including upgraded alternators, air conditioning compressors, and power steering systems—rely on this guide to maintain belt alignment and prevent failure modes caused by lateral loading. The component is essential when upgrading to larger displacement crank pulleys or relocating accessory components for turbo installations, supercharger packaging, or custom engine bay layouts.

Jones Racing Products manufactures OEM-quality components for both street and race applications. This belt guide represents the same engineering standard found in factory service parts, making it suitable for warranty-sensitive restorations and high-reliability builds where belt system integrity cannot be compromised.