Transmission Mount Bushing Insert Kit is offered in our yellow 70A material and black 95A material. Designed to fill the voiding of the OE rubber. This restricts movement within the mount to provide a more precise and settled engine and transmission response during on/off throttle acceleration and deceleration, with improved shift performance. A small increase in NVH, usually at idle, should be expected when stiffening the connecting mount between the transmission and chassis. The harder the material used, the greater the NVH transmitted. Contains enough parts to fit both the Front and Rear transmission mounts.