Walker 210-1139 Air Charge Temperature Sensor

Air Charge Temperature Sensor for Nissan and INFINITI

Walker 210-1139 is a Sensor Only air charge temperature sensor that measures incoming air temperature through resistance changes and sends that data to the engine computer. That input helps the system calculate fuel delivery more accurately for smoother operation, better fuel control, and improved cold-start performance.

Compatible With Nissan 240SX, 200SX, Maxima, Pickup, Sentra, Altima, D21, and INFINITI G20 applications, this Walker Products sensor supports precise engine management where intake air temperature data is required. The Walker Sensor Only line focuses on direct sensor replacement for vehicles that rely on accurate temperature feedback from the intake air stream.

Key Features

• Walker 210-1139 air charge temperature sensor
• Sensor Only product line for direct sensor replacement
• Measures intake air temperature through resistance changes
• Supports fuel delivery calculations by the engine computer
• Spade terminal type with 2 male terminals
• 1 female oblong connector for the vehicle harness

Detailed Product Description

The Walker Products Air Charge Temperature Sensor is built for vehicles that depend on accurate intake air temperature data for engine control. By reporting air temperature to the onboard computer, Walker 210-1139 helps the system adjust fuel delivery, support efficient combustion, and maintain proper operation during cold starts and changing ambient conditions. This makes it a practical replacement for Nissan and INFINITI models that use an air charge temperature sensor in the intake system.

Fitment includes 1989-1994 Nissan D21, 1989-1994 Nissan Sentra, 1989-1994 Nissan 240SX, 1991-1992 Dodge Monaco, 1994-1996 INFINITI G20, 1995-1996 Nissan 240SX, 1995-1996 Nissan Maxima, 1995-1996 Nissan Sentra, 1995-1997 Nissan 200SX, 1995-1997 Nissan Pickup, 1995 Nissan Altima, and 1997 Nissan Maxima with location-air cleaner notes. Walker 210-1139 is a direct-fit sensor choice for drivers searching for an air charge temperature sensor for Nissan 240SX, Nissan Maxima, or INFINITI G20 applications.

What This Sensor Helps Address

• Incorrect intake air temperature readings
• Poor fuel delivery calculations
• Hard cold starts
• Reduced engine efficiency from faulty sensor input
• Emissions issues caused by inaccurate air temperature data

Installation Notes and Quality Assurance

Install the sensor at the original air charge temperature sensor location and verify the connector style before replacement. Confirm the vehicle application by year, make, model, and any location notes such as air cleaner placement before installation. Walker Products is a recognized name in engine management components, and this sensor is engineered to provide reliable temperature input for the listed applications.

This part cross-references no listed interchange numbers for the same application.