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: Two-Piece - Symmetric Head Outside Diameter (mm): 88 Head Outside Diameter (in): 3.46 Head Thickness (mm): 15 Head Thickness (in): 0.59 Pilot Outside Diameter (mm): 64.5 Pilot Outside Diameter (in): 2.54 Inside Diameter (mm): 31.8 Inside Diameter (in): 1.25 Mount Height (mm): 70 Mount Height (in): 2.76 Bonded Sleeve: Yes