Hitachi Auto Products MAF0021 Mass Air Flow Sensor

The Hitachi MAF0021 Mass Air Flow Sensor is a precision-engineered OEM-quality component designed to measure the volume and characteristics of air entering your engine. This sensor provides critical data to the engine control unit (ECU) to calculate the exact fuel mass needed for optimal combustion, ensuring peak engine performance and fuel efficiency.

Key Features:

• Hot-wire type sensing element with platinum wire coated in protective glass film
• Welded connections instead of soldered joints for enhanced reliability and durability
• Contaminant bypass port allows moisture and impurities to exit, reducing sensor contamination
• 3-pin blade terminal connector for direct plug-and-play installation
• Integrated air temperature sensor for maximum measurement accuracy
• Optimized air passages designed for accurate readings even with EGR systems
• 100% air flow tested and calibrated for precise performance
• New component—never remanufactured

Manufactured by Hitachi Astemo, a Tier 1 OE supplier, this sensor meets or exceeds original equipment specifications for performance and longevity. Every component undergoes rigorous testing to ensure it delivers accurate air flow measurements, improved fuel economy, reduced emissions, and reliable operation in demanding conditions.

OEM Cross-Reference Numbers: 078133471C, 078-133-471C, 078 133 471 C, A2C59512900

Aftermarket Cross-References: Delphi AF10491, Spectra Premium MA129, BWD 221048M, BWD MA1077, Duralast DL-6050, Standard Motor Products MAS0239