OTTO Excavator Parts Ex300 6Sd1T Exhaust Manifold Spacer 1141490480 114149-0480 1-14149048-0 For Isuzu The 1-14149048-0 spacer resists heat, dust, and corrosion in extreme mining conditions. Its double-layered design (e.g., ceramic-coated metal) enhances thermal insulation and prevents exhaust leaks .