Oxygen Sensor for 1997-2003 Chevrolet Malibu & More - NTK 21537

NTK 21537 oxygen sensor for the 1997-1999 Chevrolet Malibu 4-cylinder 2.4L, the 1997-2003 Malibu V6 3.1L and other vehicles sends closed-loop exhaust oxygen feedback to the ECU. This NTK oxygen sensor helps the ECU control the air-fuel ratio and alerts the OBDII system to possible fuel delivery or catalytic converter efficiency problems.

• Heated, narrow-band sensor using switching zirconia technology
• Ceramic element controlled by NTK from raw material to finished product
• NTK sensors go through vibration and thermal shock testing in development, with more testing during manufacturing
• 3-stage contaminant-resistant plasma jet and deposit trap overcoat protects the element against poisoning
• Dual-coated platinum interface and a thinner ceramic element for quick light-off and response times

Quick facts

• Part: NTK 21537 oxygen sensor
• Fits: the 1997-1999 Chevrolet Malibu 4-cylinder 2.4L, the 1997-2003 Malibu V6 3.1L and other vehicles
• Position: Downstream
• Condition: New

A check engine light, worse fuel economy or a rough idle can mean the oxygen sensor is worn. A vacuum leak, an exhaust leak, a fuel delivery fault or a tired catalytic converter can be behind those signs too, so find the cause before buying a sensor.

Fits

This downstream oxygen sensor fits the 1997-1999 Chevrolet Malibu 4-cylinder 2.4L and 1997-2003 Malibu V6 3.1L, the 1999-2001 Oldsmobile Alero 4-cylinder 2.4L and 1999-2004 Alero V6 3.4L, and the 1999-2001 Pontiac Grand Am 4-cylinder 2.4L and 1999-2004 Grand Am V6 3.4L. This listing is one sensor, and the fitment calls for one per application. For any other car, open the "Vehicles it fits" section and check your exact model and engine.

Specifications

Installation notes

• The sensor is equipped with water-resistant connectors and harness accessory hardware for easy installation.