Bosch 13399 Oxygen Sensor, OE Fitment (Chrysler, Dodge, Eagle, Jeep, Mitsubishi, Plymouth) Protection tube ensures 100% accurate sensor performance Double laser-welded stainless steel body is totally submersible to seal tight and protect against contamination for long life Fast-acting heater optimizes sensor operation (on3- and 4- wire sensors only) Coated threads for easy installation