Hella 358095891 Mass Air Flow Sensor

HELLA Mass Air Flow Sensor for BMW

Restore accurate airflow measurement with this HELLA Mass Air Flow Sensor, part number 358095891. It uses a hot-wire sensing element and OE-level calibration to help the engine management system maintain the correct fuel-to-air ratio for smoother throttle response, improved drivability, and consistent fuel economy.

Compatible with select BMW 323i, 325i, 325xi, 328i, 528i, X3, Z3, and Z4 applications, this specific-fit sensor is built for direct replacement service on 6-pin, pipe-neck intake setups. The 80 mm inlet connection and included housing support a clean, factory-style installation.

Key Features

• Part number: 358095891
• Brand: HELLA
• Mass Air Flow Sensor for engine management systems
• Hot-wire sensor design for precise airflow data
• Specific fit for select BMW applications
• 6-pin rectangular connector with female connector gender
• Pipe-neck mounting type
• 80 mm (3.15 in) inlet connection diameter
• 12V electrical specification
• Black plastic housing included

Detailed Description

HELLA 358095891 is a standard replacement mass air flow sensor engineered to measure incoming air volume accurately so the ECU can calculate fuel delivery with confidence. That matters on BMW engine management systems where a drifting or failed MAF can affect idle quality, acceleration, and overall efficiency. This unit is built with a hot-wire sensor element, a 6-terminal blade connection, and a rectangular 1-connector layout for direct replacement on the listed pipe-neck intake configurations.

This part cross-references Continental 5WK96050Z and Delphi AF10223 for the same application. For shoppers searching for a BMW 325i mass air flow sensor, BMW Z4 MAF sensor, or a 2001-2005 BMW 325xi engine management replacement, HELLA 358095891 is the direct-fit option to compare against the original equipment layout.

What It Helps Fix

• Rough or unstable idle caused by inaccurate airflow readings
• Hesitation or poor throttle response during acceleration
• Reduced fuel economy from incorrect air-fuel calculations
• Check engine light concerns related to mass air flow sensor performance
• Driveability issues on BMW 323i, 325i, 325xi, 328i, 528i, X3, Z3, and Z4 models

Installation Notes and Tips

Verify the 6-pin connector, pipe-neck mounting style, and 80 mm inlet diameter before installation. This sensor is a specific-fit replacement, so matching the connector shape and intake tube dimensions is important for proper fitment. Assy/disassy by qualified personnel required. No wiring harness, gasket or seal, mounting hardware, or mounting bracket is included.

Fits 2003-2006 BMW 325Ci, N/A; Fits 2003-2005 BMW 325i, N/A; Fits 2001-2005 BMW 325xi, N/A; Fits 2004-2005 BMW X3, N/A; Fits 2003-2005 BMW Z4, N/A; Fits 2001-2003 BMW 525i, N/A; Fits 2001-2002 BMW 325Ci, N/A; Fits 2001-2002 BMW 325i, N/A; Fits 1999-2002 BMW Z3, N/A; Fits 2000 BMW 323Ci, N/A; Fits 1999-2000 BMW 323i, N/A; Fits 2000 BMW 328Ci, N/A; Fits 1999-2000 BMW 328i, N/A; Fits 1999-2000 BMW 528i, N/A.

Quality Assurance

HELLA supplies OE-level replacement components focused on accurate sensor output and dependable engine management performance. This mass air flow sensor is built as a standard replacement part for the listed BMW applications and is intended to match the original fit and electrical interface.