7% Vibrant Standard Oxygen Sensor Weld Bungs Mild Steel (M18 x 1.5 thread) - Bulk Pack of 5 pcs. Vibrant Sale! from 999 1079 /per Qty. Add to Cart This item is either made to order or has limited inventory. Please reach out to confirm lead times if needed. All Vibrant Performance exhaust bungs are made from the highest quality stainless and mild steel to ensure the utmost in quality for all professional aftermarket and O.E.M Exhaust projects.