This is an OEM O2 sensor (part # 149100 6570 / 1588A119) from a 2006 Mitsubishi Lancer Evolution SE. It is a working used part that was removed at less than 30k miles. It is ziptied to the metal OEM exhaust heatshield in that area of the bottom of the car.

The factory-spec, OEM Mitsubishi, made by Denso of Japan #1588A119 rear O2 sensor is a VERY expensive part (way over $400 at your local Mitsubishi stealership parts counter): www.ebay.com/itm/OEM-MITSUBISHI-O2-OXYGEN-SENSORS-EVO-9-REAR-1588A119-/190523877370

NOTE: This auction's price is for BOTH parts; however, the shipping cost only applies if you want the heatshield along with the O2 sensor. I will ship the O2 sensor to you at no shipping cost if you don't want or need the OEM heatshield, which obviously requires a large box, adds weight, and therefore incurs a substantial shipping cost to me.

Shipping for the O2 sensor AND the heatshield is $14.99 to addresses within the 48 U.S. states and APO/FPO, and will be shipped via FedEx SmartPost or USPS Priority Mail, seller's choice. Free shipping (only applicable for the O2 sensor by itself) is to addresses within the 48 U.S. states and APO/FPO only and will be shipped via USPS 1st Class Mail. If you do not want the heatshield, click "Buy It Now" and then request an invoice from me so that I can adjust the total amount and take out the shipping cost.

Please take a look at the pictures, check my seller feedback (nearly 100% positive over 17+ years from more than 300 different buyers), and buy with confidence. Item(s) will be packaged carefully to prevent damage in transit and shipped within one business day of confirmed payment. Used parts are sold as-is.