16 Tooth Gilmer Drive Crank Pulley

The MOROSO 16 Tooth Gilmer Drive Crank Pulley (Part #97170) is a precision-engineered crankshaft pulley designed for engine builders and performance enthusiasts seeking reliable synchronous belt drive compatibility. Manufactured from aluminum and finished in black anodized coating, this pulley delivers the durability and corrosion resistance demanded in high-heat engine compartments while maintaining minimal weight for reduced parasitic drag on the crankshaft.

This Gilmer-style pulley features a 16-tooth profile with 3/8-inch pitch geometry, engineered to mesh precisely with Gilmer belt drive systems commonly used in custom and competition engine builds. The 1-inch mandrel diameter accommodates standard crankshaft applications, while the 1/8-inch keyway ensures positive drive engagement without slippage during high-RPM operation. The 1-inch width provides adequate belt contact surface for load distribution across the full face of the drive belt. The black anodized aluminum construction resists oxidation and maintains dimensional stability across repeated thermal cycles, critical for engines subject to sustained elevated temperatures.

This pulley is suited for engine builders implementing serpentine or dedicated accessory drive systems where Gilmer belt synchronization is required. Common applications include street performance engines, vintage engine restorations with modern cooling and charging upgrades, and custom engine platforms where OEM pulleys are unavailable or incompatible. The universal mounting profile allows integration into diverse engine platform configurations without modification.

Gilmer drive systems offer advantages over serpentine belts in extreme-duty applications due to their positive engagement and resistance to slippage under load. The 16-tooth count provides a balance between belt tension and pulley size, making it compatible with compact engine bays where space constraints limit larger pulley diameters. Proper belt tension and alignment are essential during installation to maximize bearing life and prevent premature wear.

At 0.2 lbs, this lightweight aluminum pulley minimizes rotating mass, reducing stress on crankshaft bearings and improving throttle response in performance-built engines. MOROSO is recognized in the engine building community for precision accessory components that meet exacting OEM tolerances.