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): 64.8 Head Outside Diameter (in): 2.55 Head Thickness (mm): 22.9 Head Thickness (in): 0.9 Pilot Outside Diameter (mm): 37.2 Pilot Outside Diameter (in): 1.46 Inside Diameter (mm): 16.9 Inside Diameter (in): 0.67 Mount Height (mm): 28.4 Mount Height (in): 1.12 Bonded Sleeve: No