The O2 sensor fixture contains a miniature catalytic converter designed to work with your vehicle's emission system. It helps maintain proper sensor readings after the removal of the main catalytic converter, which may assist in preventing certain diagnostic trouble codes such as P0420 or P0430 related to catalyst efficiency. This device is engineered to simulate the presence of a functioning catalytic converter by stabilizing post-converter exhaust readings, helping the ECU operate as intended under specific conditions. It is not intended for bypassing emissions inspections in regions where such modifications are prohibited. Features: 1. Precision-machined threads using specialized tools for accurate fitment. 2. Durable construction with high-quality materials resistant to deformation and corrosion. 3. Universal compatibility with most vehicles equipped with M18 x 1.5 oxygen sensors. 4. Made from strong, long-lasting metal material. 5. Simple installation with direct mounting design. Condition: New Type: O2 Sensor Spacer Thread Size: M18 x 1.5 Dimensions: Approximately 1.85 x 0.98 x 1.18 inches Material: Metal Color: Silver Package Contents: 10 x Oxygen Sensor Spacers Note: The package includes only the items listed. Ambient lighting and display settings may cause slight variations in color representation. Measurement tolerance is +/- 1-3 cm.