CVT Primary Pulley
The primary pulley: the drive pulley, the input pulley of a CVT.
Design diagram only, not a product photograph.
The primary row
The parts table lists the primary pulley as Primary Pulley / Drive Pulley, with the note input pulley. Two names, one row, one side of the transmission: the side where power enters. A buyer who says drive pulley and a buyer who says primary pulley are asking for the same row, and this page treats them as one, so the two names do not become two products.
The primary pulley works with the secondary pulley. Power enters at the primary, travels by belt or chain, and leaves at the secondary. A fault described at the input side, or a part request that names the input side, points here. A fault or request that names the output side points to the secondary pulley page. If the side is not known, the pulley set page is the safer starting point, because it covers both sides as a set rather than guessing one.
No dimension, material or fitment specification is published for the primary pulley on this page, because the table gives none. The inquiry should name the row, state whether the belt or chain variant is meant, and ask the supplier to confirm the matching secondary pulley and the quantity terms and lead time.