Description Reviews The Powerflex Upper Engine Mount Insert is designed to fill the void in the OE rubber upper engine mount to restrict movement. The original rubber engine mount softens and perishes with age, losing its ability to dampen effectively and promoting unwanted engine movement. By fitting our new insert, it acts as a buffer by restricting movement within the bush thus improving throttle response, sharpening gear changes, and reducing wheel hop for improved traction. The bush requires no pressing or burning, simply peen the insert into position and refit the mount! A small increase in NVH, usually at idle, should be expected when stiffening the connecting mount between the engine/transmission and chassis. The harder the material used, the greater the NVH transmitted. PFF5-224 Upper Engine Mount Insert is made from our Yellow 70A durometer material, providing an excellent balance of strength and compliance for improved performance, while limiting NVH transmission into the cabin. This part is recommended for Gas models and high-torque tuned Diesel models. PFF5-424BLK Upper Engine Mount Insert is made from our stiffest 95A Black Series material, providing a no-compromise performance option for track-focused builds. Powerflex polyurethane bushings are designed to decrease the amount of deflection in your car's suspension for better handling, more driver feedback, and better tire wear. Powerflex uses premium polyurethane materials for minimal NVH (noise, vibration, harshness) and increased longevity over the stock rubber bushings. Bushings come in pre-determined durometers (measured hardness) from Powerflex to work best in each particular location. The street bushing will work best for mostly everyone. They have been spec'd by Powerflex to be the best durometers for your application and are 70A (Yellow), 80A (Purple), and 95A (Black). Note: Red for this busing is for the Diesel which is not in they US market. Powerflex grease is supplied with every dynamic product. We suggest using only this grease for lubrication. Due to grooves and knurls cast into the material to hold the lubricant, bushings will rarely need re-lubing. We do not suggest using an "anti-seize" product for lubrication. Want a stiffer bushing? Have a track car? Try "The Black Series." A new range of bushings developed for Race, Rally and Circuit use. The Powerflex Black Series bushings are manufactured using a 95 Shore A compound to provide maximum control of chassis geometry. Warranty: All Powerflex bushings are made in the UK and come with a 1 year, unlimited mile warranty. Instructions Download