The Moroso Gilmer-style crankshaft pulley is a 3/8-inch pitch, 1/2-inch wide pulley with 18 teeth, intended for positive-drive accessory or timing applications that require narrower pulley width while retaining 18-tooth engagement. It interfaces with radius-tooth belts to maintain coordinated motion between crank and driven components. Specify this 3/8" pitch, 1/2" wide, 18-tooth pulley when that exact configuration is called for.
Moroso Crankshaft Pulley - Gilmer Style - 3/8in Pitch x 1/2in Wide - 18 Tooth