Ford Focus Mk3 ST (2012 - 2018)Lower Engine Mount BushThis part comes with an insert that limits the flexibility of the bush, this can be fitted to further reduce engine movement. For inserts only please use PFF19-1821. Bush Size: OEM Part Numbers: 5165555 Quantity: 1 Bush(es) / Required per Car = 1 Bush(es)Road Series Part Number = PFF19-1820Black Series Part Number = PFF19-1820BLKRoad EAN Reference Number: 5055676535719, Black EAN Reference Number: 5055676535801Diagram Reference = 20NOTES:-See above pictures and car diagrams as applicable.Road Series - For Road and fast Road use. Improve your cars’ road holding and chassis performance by controlling the amount of unwanted flex in the suspension. They offer Prolonged tyre life, Improved performance, Increased safety, Greater cost-effectiveness.Black Series- For Track and Motorsport use. Manufactured using Black 95 Shore A compound to provide maximum control of chassis geometry. They are designed for the Track, ready to Race and are engineered to be the best.Fitting Instructions: Road Series - Black Series