Oxygen Sensor Bungs, Spacer & Adapters

O2 sensor fittings in M18 x 1.5 thread, including weld-on bungs with plugs, 45 and 90 degree spacer extenders for CEL fixes, and M12 x 1.25 EGT sensor bosses for DPF fittings. Stainless construction suits exhaust repairs, sensor relocation and custom fabrication. Confirm sensor thread size and clearance around the exhaust before ordering, and note spacers suit standard 18mm sensors.