Walker 210-91042 Air Charge Temperature Sensor

Air Charge Temperature Sensor for Nissan and INFINITI

Walker Products Part Number 210-91042 is an air charge temperature sensor for select Nissan and INFINITI applications. It measures incoming air temperature through resistance changes so the engine computer can calculate fuel delivery with greater accuracy.

Walker Full Service Kit parts are built for direct-fit service applications, giving technicians a replacement option that matches the vehicle’s original sensor style and connector layout.

Key Features

• Air charge temperature sensor for engine management input
• Blade terminal design with 2 terminals
• 1 female rectangle connector
• Direct mounting type for service replacement
• Terminal gender: male
• Connector gender: female
• Walker Products Part Number 210-91042

How It Works

This sensor reports intake air temperature to the engine control system, helping the computer adjust fuel delivery based on changing conditions. On vehicles such as the Nissan Pathfinder, Nissan Maxima, and INFINITI QX4, accurate air temperature input supports cold-start operation, fuel control, emissions management, and overall drivability. Part number 210-91042 is a direct replacement choice for service work on select Nissan and INFINITI models.

Vehicle Fitment

• Fits 1996-2004 Nissan Pathfinder, N/A
• Fits 1997-2003 INFINITI QX4, N/A
• Fits 1999-2002 INFINITI G20, N/A
• Fits 1996-2001 INFINITI Q45, N/A
• Fits 1999-2001 Nissan Maxima, N/A
• Fits 1999 INFINITI I30, N/A
• Fits 1997-1999 Nissan Sentra, N/A
• Fits 1997-1998 INFINITI I30, N/A; Location-Air Intake Hose
• Fits 1997-1998 Nissan 200SX, N/A
• Fits 1997-1998 Nissan Maxima, N/A; Location-Air Intake Hose
• Fits 1995-1997 INFINITI J30, N/A
• Fits 1996-1997 Nissan Altima, N/A
• Fits 1996 Nissan 300ZX, N/A

Common Issues This Sensor Can Address

• Incorrect air temperature input to the engine computer
• Hard cold starts or inconsistent warm-up behavior
• Poor fuel delivery control under changing intake conditions
• Reduced drivability caused by a faulty intake air temperature signal
• Emissions concerns related to inaccurate sensor readings

Installation Notes and Tips

Confirm connector shape, terminal count, and mounting style before installation. This sensor uses a direct mount design with one female rectangle connector and blade terminals, so matching the original configuration is important for proper fitment. Inspect the air intake hose or sensor mounting location for damage, contamination, or loose connections before installing Walker Products 210-91042.

Quality Assurance

Walker Products is a long-established name in engine management components, and the Full Service Kit line focuses on service-ready replacement parts for select vehicle applications. Part number 210-91042 is engineered for the listed Nissan and INFINITI fitments.