A-Premium Mass Air Flow Sensor for Subaru — 5‑Pin 22680AA380 Direct-Fit, ±3% Accuracy

A-Premium Mass Air Flow Sensor (5 pins, part 22680AA380) accurately measures intake air to help your Subaru’s ECU optimize fuel delivery.

This direct-fit replacement MAF sensor is engineered for many Subaru models from 2008–2018 and built from durable PBT+GF30 and aluminum alloy materials. It connects with a five-pin electrical interface and bolts into the factory mounting points, providing a measuring range up to 9.25 m³/min and ±3% accuracy. The sensor supplies the engine control unit with airflow volume and density data so fuel injection timing and quantity match changing ambient conditions.

Which Subaru models will this 5-pin MAF sensor fit?

The A-Premium MAF sensor is compatible with a broad cross-section of Subaru vehicles across multiple model years and engine types. Confirm the part numbers and terminal count match your vehicle before ordering.

• Forester 2009–2018 H4 2.5L
• Impreza 2008–2016 H4 2.0L and 2008–2014 H4 2.5L
• Legacy 2008–2018 H4 2.5L and 2010–2018 H6 3.6L
• Outback 2008–2018 H4 2.5L and 2010–2018 H6 3.6L; WRX/WRX STI and Crosstrek years listed

How accurate and durable is this replacement sensor?

Manufactured with a PBT+GF30 polymer and aluminum alloy components, the sensor is designed for robust under-hood conditions while delivering consistent airflow measurements. It supports a 12-volt supply and provides measurement accuracy within ±3%, suitable for precise ECU fuel trim adjustments.

• Measurement range: 0–9.25 m³/min
• Accuracy: ±3% for reliable readings
• Construction: durable PBT+GF30 housing and aluminum alloy elements
• Mounting: two-bolt, bolt-on installation matching OEM points

What should I check before replacing my MAF sensor?

Diagnose the underlying cause to ensure the MAF is the real issue—scanning trouble codes and inspecting connectors and intake plumbing helps avoid unnecessary replacements. If codes or poor performance point to the MAF, this A-Premium unit is a direct-replacement option with matching electrical terminals and reference numbers.

• Scan OBD-II trouble codes for MAF-related P0xxx codes
• Inspect wiring harness and connector pins for damage or corrosion
• Check air filter and intake for leaks or debris that affect readings
• Compare part numbers: 22680AA380, 22680AA38A, 197400-5111, MAS0317, AF10345

Will installation require special tools or tuning?

Installation is typically straightforward and uses standard hand tools to unbolt the old sensor and secure the new unit into the OEM location. No ECU tuning is required for direct-fit swaps, though clearing codes and following a short relearn drive cycle can restore baseline fuel trims.

• Tools: basic hand sockets or drivers for two mounting bolts
• Electrical: five-pin connector matches OEM harness (no splicing)
• After-install: clear codes and perform a short drive cycle for relearn
• Service tip: consult a technician if intermittent faults recur

Who is this for: drivers and DIY mechanics with compatible Subaru models who need a reliable, cost-effective MAF sensor replacement. It’s suited to owners who confirmed MAF-related diagnostic codes or observed symptoms such as irregular idle, decreased fuel economy, or check-engine alerts and want a direct-fit part with clear reference numbers and a one-year unlimited-mileage guarantee from A-Premium.