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): 137.7 Overall Length (in): 5.42 Cup Outside Diameter (mm): 200.6 Cup Outside Diameter (in): 7.90 Cup Inside Diameter (mm): 27.5 Cup Inside Diameter (in): 1.08