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): 63 Head Outside Diameter (in): 2.48 Head Thickness (mm): 11.1 Head Thickness (in): 0.44 Pilot Outside Diameter (mm): 40.6 Pilot Outside Diameter (in): 1.6 Inside Diameter (mm): 20.6 Inside Diameter (in): 0.81 Mount Height (mm): 50.8 Mount Height (in): 2 Bonded Sleeve: Yes