Hella 358166221 Mass Air Flow Sensor MAF Replacement

The Hella 358166221 is a direct-fit replacement mass air flow (MAF) sensor engineered to OE standards for precise intake air measurement. Positioned between the air filter housing and the intake manifold, the MAF sensor measures the intake air flow of the engine, which is crucial for the real-time adjustment of the air/fuel mixture.

It also serves as a control gateway for the functionality of the EGR system, playing a decisive role in modern combustion engines and making a significant contribution to optimum performance and efficiency.

Key Features:

• Meets the highest standards of quality and functionality, characterized by high measuring precision and consistently high manufacturing quality for a long service life.
• Built on Hella's OE know-how in electronics, providing optimized performance through high flow measurement accuracy.
• Direct OEM-style replacement — no modifications required for installation
• Provides accurate air mass data to the engine control unit (ECU) to maintain proper fuel trim and emissions compliance

Symptoms of a Failing MAF Sensor:

• Hesitation during acceleration, unstable idle, and reduced fuel economy
• Diagnostic trouble codes such as P0101, P0102, and P0103 may indicate a failing mass air flow sensor
• Loss of power, increased fuel consumption, poor driving experience, and increased emissions

It is recommended not to clean a dirty mass air flow sensor, but to replace it for a reliable long-term result. The Hella 358166221 restores factory-correct air measurement performance and helps protect dependent engine management and emissions components.