O2 Sensor Plug

HARDDRIVE O2 Sensor Plug Universal O2 sensor plug designed to seal unused oxygen sensor ports quickly and reliably. Ideal for diagnostics, repairs, and custom exhaust setups where an O2 sensor is removed or not required. Fits any exhaust sensor port — compatible with most threaded O2 bung sizes for a secure, gas-tight seal. Durable construction — corrosion-resistant material built to withstand high temperatures and harsh exhaust conditions. Sold individually — purchase the exact quantity you need for replacements or one-off projects. Easy installation — thread-in design for fast hand-tight or wrench-assisted fitting without special tools. Perfect for mechanics, tuners, and DIY enthusiasts, the HARDDRIVE O2 Sensor Plug prevents exhaust leaks, keeps check-engine lights from false triggers, and maintains proper exhaust system integrity when sensors are removed.