Powerflex Rear Engine Mount Insert PFF34-602Fits the 1ZZ & 2ZZ Toyota engine only. PFF34 602 acts to stiffen the voiding of the OE mount, helping to restore a level of responsiveness expected from such a vehicle. Made using our Yellow 70A durometer material, it provides the perfect balance between compliance and stiffness, giving control and precision without compromising comfort. A small increase in NVH, usually at idle should be expected when stiffening the mounting between the engine