Crank Pulley Gilmer 24T

The Crank Pulley Gilmer 24T from Peterson Fluid is a precision-engineered crankshaft pulley designed for builders and engine shops upgrading to Gilmer belt drive systems. This aluminum pulley serves as the foundation of a modern serpentine accessory drive, replacing antiquated V-belt configurations with superior belt grip and reduced slippage. Whether you're building a high-output engine, swapping powerplants, or upgrading an aging cooling or alternator system, this universal pulley integrates seamlessly into custom engine packages where reliable power transmission to auxiliary components is non-negotiable.

Manufactured from lightweight gray-anodized aluminum, the Crank Pulley Gilmer 24T features 24 evenly-spaced teeth machined to 3/8-inch pitch specifications, ensuring positive belt engagement and synchronization across the entire drive package. The 1-inch diameter mandrel accommodates standard crankshaft installations, while the precision 1/8-inch keyway locks the pulley against rotation—critical for eliminating harmonic slip during acceleration and load spikes. At just 0.52 pounds, the pulley's compact 1.25-inch face width minimizes envelope while the anodized finish resists oxidation and enhances durability in high-temperature engine bays, making it ideal for street, race, and marine applications where belt longevity directly impacts engine reliability.

This pulley is essential for engine builders transitioning from single-belt systems to dedicated Gilmer belt drives, where coordinated tooth counts across crankshaft, water pump, alternator, and accessory idler pulleys eliminate slack and maximize efficiency. Technicians upgrading cooling systems on LS swaps, big-block restorations, or supercharger installations will appreciate the Peterson Fluid engineering that ensures repeatable fit and long-term reliability. Installation requires only a standard 3/8-pitch Gilmer belt kit sized to match your 24-tooth configuration—verify overall belt length and driven pulley specs before ordering to ensure system balance and proper tension.