Masterdrive dual groove 4" cast iron pulley/sheave with 1" H bushing for A section belt is a high-quality 2-piece pulley that measures 4" outside diameter and is designed to be used with an H style bushing. This bushing inserts into the center of the pulley and slides over the shaft, as you tighten down the bolts on the H bushing it will tighten down on the shaft making this style of pulley much more secure than a standard single-piece pulley. The bushing is made of solid steel and precision machined to ensure high quality and secure attachment to your motor/engine shaft. This pulley accepts A Section also known as 4L series belts and is 1/2" wide.
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