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: Mushroom Mount Overall Length (mm): 50.8 Overall Length (in): 2 Sleeve Length (mm): 42.9 Sleeve Length (in): 1.69 Head Outside Diameter (mm): 63.5 Head Outside Diameter (in): 0.098 Pilot Outside Diameter (mm): 41.2 Pilot Outside Diameter (in): 1.62 Inside Diameter (mm): 16.5 Inside Diameter (in): 0.65 Standard Bolt Size: M16