Driver Side Piston – GM (19303443)

Driver Side Piston is one of the pistons that converts combustion pressure into motion. Ring land dimensions and skirt coating are specific to the build, not to the displacement.

Replace the Driver Side Piston during any rebuild that has the head off, and always when the bore shows vertical scoring. Piston-to-wall clearance is set by measurement, not by the part number alone.

This Driver Side Piston is listed under part number 19303443, filed under Pistons, Rings & Cylinders. If the original number is unreadable, send us the VIN and we will confirm the reference before dispatch.

This is genuine GM stock, supplied for the Driver Side Piston with the manufacturer number intact so the reference on the box matches the catalogue.

This listing is specifically for the driver (left-hand) side; the opposite side is a separate part number.