Walker 245-1271 Mass Air Flow Sensor

Walker Mass Air Flow Assembly for Porsche Cayenne

Restore accurate airflow measurement with the Walker Mass Air Flow Assembly, part number 245-1271. This mass air flow sensor is built for select Porsche Cayenne applications and uses a 5-terminal female connector with mounting hardware included for a direct replacement setup.

Key Features

• Walker Mass Air Flow Assembly, part number 245-1271
• Fits 2004-2006 Porsche Cayenne and 2008-2010 Porsche Cayenne
• 5-terminal female connector
• Mounting hardware included
• Housing not included
• Engine management replacement for airflow signal accuracy

Product Details

The Walker Mass Air Flow Assembly is part of Walker Products’ engine sensor line, backed by decades of fuel system and aftermarket experience. Walker manufactures to meet or exceed OEM standards and supports production with engineering, product management, and technical resources. For Porsche Cayenne owners replacing a failing airflow sensor, part number 245-1271 provides a fitment-specific solution for 2004-2006 and 2008-2010 models.

This part cross-references Standard Ignition MAS0452 for the same application.

Common Issues This Part May Resolve

• Rough idle caused by inaccurate airflow readings
• Hesitation or stumble during acceleration
• Check engine light related to mass air flow sensor faults
• Poor fuel trim behavior from incorrect intake air measurement
• Driveability problems tied to a worn or contaminated sensor

Installation Notes

Verify connector style, terminal count, and vehicle year before installation. This assembly uses a female connector and includes mounting hardware, while the housing is not included. For best results, inspect the intake tract for leaks, contamination, or damaged wiring before installing the new sensor. Confirm the application against your Porsche Cayenne year range and compare the original part number 245-1271 when servicing the vehicle.

Quality Assurance

Walker Products has supplied automotive fuel system and engine sensor components since 1946 and operates as an ISO 9001/IATF 16949 certified manufacturer. The brand states its parts are produced to meet or exceed OEM standards and specifications, with engineering and technical support behind product accuracy and application coverage.