This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
Factory Transmission mounts are built for comfort and the heavily voided Subaru transmission mounts are no exception. Reduce the lag in response and feel by removing the slop from the rubber transmission mounting by inserting Whiteline's low compliance polymer insert. Designed to fill the voided areas in the transmission mount this achieves a crisp feel for on/off throttle applications.