Cardone 86-9937 Mass Air Flow Sensor

Mass Air Flow Sensor for Nissan and Infiniti

This Cardone Mass Air Flow Sensor restores accurate airflow measurement for engine management on select Nissan and Infiniti applications. It is built to track original equipment output curves and maintain tight tolerances for reliable scan tool readings and consistent engine performance.

Compatible With 1997 Infiniti QX4 and 1996-1997 Nissan Pathfinder, this new sensor module with housing is a direct-fit emission control replacement for vehicles using the listed MAF sensor configuration. Part number 86-9937 is engineered for dependable signal accuracy across changing temperature and altitude conditions.

Key Features

• Cardone Engineered Technology for precise airflow signal output
• 100% tested with automated computer test equipment
• Guaranteed O.E. fit and function
• Maintains spec tolerances for accurate engine control feedback
• Rated for demanding temperature variations and environmental conditions
• New sensor assembly with housing, black plastic construction
• Bolt-on mounting with 4 mounting holes

Detailed Product Overview

The Cardone 86-9937 Mass Air Flow Sensor is a new replacement part for the engine control system. It measures incoming air so the ECU can calculate fuel delivery and drivability corrections. For 1997 Infiniti QX4 and 1996-1997 Nissan Pathfinder models, this sensor helps restore proper airflow reporting when the original unit is no longer sending accurate data. Part number 86-9937 is also cross-referenced to Infiniti and Nissan OE number 226802J200 for the same application.

Cardone’s mass air flow sensor line focuses on output consistency, scan-tool accuracy, and durability under real-world heat, cold, and altitude changes. The included housing and bolt-on design support a direct replacement approach for the listed vehicles.

What It Helps Correct

• Hesitation during acceleration
• Stalling or intermittent engine operation
• Poor fuel economy
• Poor engine performance
• Incorrect airflow sensor readings or fault codes

Installation Notes and Tips

Before installing the new sensor, inspect the air filter, intake ducting, connectors, and wiring for dirt, debris, cracks, loose terminals, or moisture intrusion. Air leaks, restricted airflow, or damaged wiring can cause repeat failure even after replacement. Verify the connector and housing condition before final installation.

Use the listed fitment only: Fits 1997 Infiniti QX4, N/A; Fits 1996-1997 Nissan Pathfinder, N/A. Confirm the existing sensor module and housing style match the application before ordering.

Quality Assurance

Every unit is 100% tested with automated computer equipment to verify function and reliability. The sensor is built to maintain original equipment output characteristics and strict tolerances for accurate engine management feedback.