Hooker BlackHeart Polyurethane Transmission MountHooker continues to set the standard of performance with the BlackHeart line of drivetrain components. These BlackHeart transmission mounts are constructed of durable polyurethane to handle the stress and vibration of high horsepower applications while still lasting longer than rubber mounts. Our 3 hole design allows multiple mounting options for factory chassis or custom hot rod applications and feature a unique built in safety lock to keep from