Cat fuel injector nozzles utilize specialized product metallurgy, proprietary manufacturing processes and design, to deliver injectors capable of meeting today's performance and injection pressures for emissions requirements. Mount Type: Cup Mount Overall Length (mm): 157.1 Overall Length (in): 6.18 Cup Outside Diameter (mm): 216.1 Cup Outside Diameter (in): 8.51 Cup Inside Diameter (mm): 27.5 Cup Inside Diameter (in): 1.08