Oxygen Sensor for 2001-2003 Jeep Wrangler & More - NTK 23139

NTK 23139 oxygen sensor for the 2001-2003 Jeep Wrangler 6-cylinder 4.0L and other vehicles gives the ECU closed-loop feedback. The NTK oxygen sensor helps control the air-fuel ratio and alerts OBDII systems to possible fuel delivery or catalytic converter efficiency problems.

• Heated switching zirconia sensor
• Development includes vibration and thermal shock testing, and testing continues during manufacturing
• Water-resistant connectors and harness accessory hardware
• 3-stage contaminant-resistant plasma jet and deposit trap overcoat protects the ceramic element against poisoning
• Dual-coated platinum interface and thinner ceramic element for fast light-off and response times

Quick facts

• Part: NTK 23139 oxygen sensor
• Fits: 2001-2003 Jeep Wrangler 6-cylinder 4.0L and other vehicles
• Position: Upstream, upstream left, upstream right
• Condition: New

A failing oxygen sensor can show up as a check engine light, a rough idle or poorer fuel economy, and each of those can have other causes. With the engine off and cool, look over the sensor's wiring and connector for damage first, and find the cause before you replace the sensor.

Fits

The 2001-2003 Jeep Wrangler 6-cylinder 4.0L, the 2001-2003 Jeep Grand Cherokee 6-cylinder 4.0L, the 2001 Dodge Ram 1500 V6 3.9L or V8 5.2L and the 2001-2003 Ram 1500 V8 5.9L all take this direct-fit replacement oxygen sensor, and so do other vehicles. This listing is one sensor; the 2001-2003 Jeep Wrangler 6-cylinder 4.0L takes one.

Specifications