Hella 009403121 Manifold Absolute Pressure Sensor

HELLA MAP Sensor for Nissan Pathfinder

Restore accurate engine load readings with this HELLA Manifold Absolute Pressure Sensor, part number 009403121. It provides real-time pressure data for fuel mapping and turbo boost control, helping the engine management system respond with the precision expected in 1997-1998 Nissan Pathfinder applications.

Key Features

• Manifold Absolute Pressure Sensor for emission control and engine management
• Standard replacement grade for OE-style service fitment
• 3-pin connector design
• Bolted mounting type for secure installation
• Supplied without gasket or seal
• HELLA part number 009403121

Product Details

HELLA 009403121 is built to deliver pressure signal data used by the ECU for fuel delivery and boost control decisions. In 1997-1998 Nissan Pathfinder models, accurate MAP sensor input is important for maintaining stable drivability, consistent throttle response, and emissions system performance. This sensor is a direct-fit standard replacement for service work where the original unit has failed or is reading outside specification.

This part cross-references Standard Ignition AS145 for the same application.

What It Helps Address

• Rough idle caused by incorrect manifold pressure readings
• Hesitation or poor throttle response under load
• Incorrect fuel mixture from faulty engine load data
• Reduced turbo boost control accuracy where equipped
• Check engine light conditions related to MAP sensor performance

Installation Notes

Compatible With 1997 Nissan Pathfinder, 3-Pin Connector - Bolted - without Gasket/Seal, and 1998 Nissan Pathfinder, To 07/97. Assy/Disassy by Qualified Personnel Required. Verify connector style, mounting type, and calibration requirements before installation. Because this sensor is supplied without a gasket or seal, reuse or replacement of sealing components must be confirmed separately.

Quality Assurance

HELLA manufactures this MAP sensor to OE-level dimensional and functional standards for standard replacement service. Part number 009403121 is engineered for consistent signal output and dependable fit in the listed Nissan Pathfinder applications.