Do not risk using an extension that may not workthis is a real mini catalytic converter designed to help resolve check engine light issues that occur after exhaust modifications or removal of the original catalytic converter. It may also assist when installing a high-flow catalytic converter. Common error codes such as P0420 (Catalyst System Efficiency Below Threshold Bank 1) and P0430 may be addressed with this device.CEL Fix Check Engine Light Eliminator Adapter - O2 Sensor for automotive use. New .Type: O2 Oxygen Sensor Adapter Surface Treatment: Electro-nickel Plating Thread: M18x1.5 Length: 58mm Function: Check engine light fix Color: Silver Material: Metal Size: 58 x 16 x 25mm Package Contents: 1 x O2 Sensor Adapter Extender Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display differences may cause slight color variations between the product image and the actual item. Measurement allows an error of +/- 1-3cm.