Prothane pro7-503

Prothane motor mounts for 1955–1957 GM cars in red polyurethane replace aging factory mounts to maintain engine positioning and reduce excessive movement. These mounts are intended to improve driveline stability and preserve alignment after restoration or regular service. Offered as a color-coded upgrade, they provide a durable alternative to worn rubber components while supporting proper engine cradle fitment.

Prothane 55-57 GM Motor Mounts - Red