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. Cat Reman Part Number: 0R-3591 Length (in): 8.7 Length (mm): 221.0 Width (in): 1.5 Width (mm): 38.1 Height (in): 1.5 Height (mm): 38.1 Weight (lbs): 0.7 Weight (kg): 0.4