Rider-first purpose: 18MM O2 Sensor Plug is here to support real ride days—reliability, stress reduction, preparedness, and performance with responsibility (not hype). Vendor details & photos: View this item on Trinity Racing. Vendor technical detailsThreaded bung plug designed to seal off O2 sensor bung. Pricing & availability: TTN works with multiple vendors. Pricing and availability can change. Every order is manually reviewed and placed—if anything shifts (backorder, discontinuation, price change), we’ll reach out with options. Shipping: Shipping costs vary by size/weight. Checkout shipping can be inaccurate on bulky items—if there’s a big difference, TTN will contact you before finalizing. Fitment: TTN can’t guarantee fitment. If fitment options are shown, choose carefully. If no fitment is listed, treat it as universal and verify before ordering. Always confirm compatibility for your exact machine and setup.