Standard Ignition AX291 Engine Intake Manifold Temperature Sensor

Overview of Standard Ignition AX291 Intake Manifold Temperature Sensor

The Standard Ignition AX291 Engine Intake Manifold Temperature Sensor is designed for precise temperature monitoring in BMW vehicles, including the 320i and 840Ci models. This sensor plays a critical role in emission control by providing accurate intake air temperature data to the engine control unit.

• Compatible with BMW 320i and 840Ci models
• Part number AX291 for easy identification
• Black and gold finish for corrosion resistance
• 12mm x 1.50 thread size for secure installation
• Two male blade terminals with a female rectangular connector
• Plug-in attachment method for straightforward replacement
• Single port and connector for efficient integration
• Mounting hardware and wiring harness not included

Detailed Product Description

The Standard Ignition AX291 sensor is engineered to measure the temperature of the intake manifold air, which is essential for optimizing engine performance and emissions. Featuring a 12mm x 1.50 thread size, this sensor installs directly into the intake manifold port. It includes two male blade terminals housed within a female rectangular plug-in connector, ensuring a reliable electrical connection. The sensor’s black and gold finish provides durability against heat and corrosion. Although mounting hardware and wiring harness are not included, the plug-in design simplifies installation and replacement.

Common Applications and Issues Addressed

• Helps regulate air-fuel mixture by providing accurate intake air temperature data
• Prevents engine performance issues related to incorrect temperature readings
• Supports emission control systems to reduce harmful exhaust gases
• Addresses engine stalling or rough idling caused by faulty temperature sensors
• Resolves check engine light triggers related to intake manifold temperature faults

Installation Notes and Tips

• Ensure the engine is cool before removing the old sensor to avoid burns
• Use the correct 12mm x 1.50 thread size to avoid cross-threading
• Verify the connector gender and terminal type match the vehicle’s wiring harness
• Do not force the sensor; it should plug in smoothly with the rectangular connector
• Check for any vacuum leaks around the sensor port after installation

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The AX291 sensor undergoes rigorous testing to ensure reliable performance in BMW 320i and 840Ci models. While mounting hardware and wiring harness are not included, the sensor itself is backed by Standard Ignition’s quality standards. Please refer to the manufacturer’s warranty policy for specific coverage details.