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: Sandwich - Threaded Stud Both Ends Overall Length (mm): 120.65 Overall Length (in): 4.75 Outside Diameter (mm): 113.87 Outside Diameter (in): 4.48 Rubber Length (mm): 57.15 Rubber Length (in): 2.25 Stud Length (mm): 31.75 Stud Length (in): 1.25 Stud Thread Size: M12 Stud Thread Pitch: 1.75