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): 31.8 Overall Length (in): 1.25 Sleeve Length (mm): 25.4 Sleeve Length (in): 1 Head Outside Diameter (mm): 50.8 Head Outside Diameter (in): 0.079 Pilot Outside Diameter (mm): 34.3 Pilot Outside Diameter (in): 1.35 Inside Diameter (mm): 16.5 Inside Diameter (in): 0.65 Standard Bolt Size: M12