Seat Leon Models Leon MK1 1M (1999-2005) Upper Engine Mount Insert (Diesel) - PFF85-440R PFF85-440R uses our softest Red 65A material, specifically designed to minimise NVH transmission. Recommended for unmodified Diesel models or for drivers who want a subtle improvement in driving feel, without compromising comfort. A small increase in NVH, usually at idle, should be expected when stiffening the connecting mount between the drivetrain and chassis. The harder the material used, the greater the NVH transmitted. Reducing engine/trans movement by way of upgraded inserts has the following benefits: Sharper throttle response More accurate gear changes Reduced wheel-hop Improved Traction Prolonged mount life - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!