Belt Guide

The Jones Racing Products Belt Guide (Model BG-9108-W) is a precision pulley guide engineered for serpentine belt routing on high-performance marine and automotive engines. This aluminum component maintains proper belt tension and tracking under load, preventing slippage and premature wear on critical accessory drive systems. The 3.5-inch diameter pulley diameter combined with 1/16-inch material thickness delivers the rigidity required for sustained RPM operation while minimizing inertial load.

Constructed from black anodized aluminum, this belt guide resists corrosion in harsh marine environments where salt spray and moisture accelerate oxidation of untreated metal. The 3/4-inch mounting hole accommodates standard fastener patterns found across marine engine blocks and gear case installations. At just 0.05 pounds, the guide adds negligible weight while providing the lateral constraint necessary to keep belts aligned under acceleration and deceleration cycles typical of offshore operation.

This component is essential for boat owners upgrading or maintaining high-output engines where accessory drive reliability directly impacts time on the water. Whether running a rebuilt marine powerplant or restoring a vintage offshore fishing rig, proper belt guidance prevents costly downtime from alternator or water pump failure. The compact footprint (3.9 × 0.95 × 4.4 inches) fits tight engine compartments without requiring extensive fabrication or bracket modifications.

Jones Racing Products is recognized for supplying OEM-quality serpentine drive components to performance and marine engine builders. This belt guide meets the dimensional and material standards expected in professional marine service environments, making it suitable for both DIY restoration projects and commercial marine operations.