FAERSI Mass Air Flow Sensor for Toyota (22204-21010) — Direct-Fit OEM Replacement, Restores Accurate Airflow

FAERSI replacement Mass Air Flow (MAF) sensor is a direct-fit OEM-style airflow meter engineered to restore accurate air measurement for compatible Toyota and Lexus models.

This FAERSI MAF meter (part numbers 22204-21010, 74-50009, AF10029 and cross-references) is built as a direct equipment replacement to monitor the volume and density of intake air and feed precise data to your engine control unit. Designed to meet OEM specifications, it aims to resolve common symptoms of a failing MAF—such as rough idle, reduced fuel economy, and diagnostic trouble codes—while providing a durable plastic-and-aluminum assembly tested in production.

How will this FAERSI MAF improve my vehicle’s running condition?

Installing the FAERSI MAF returns accurate airflow readings to the ECU, which helps correct fuel delivery and ignition timing. That can eliminate erratic idle and reduce the chance of stalling when the sensor was the root cause. It’s intended to clear airflow-related diagnostic trouble codes once the faulty sensor is swapped out.

• Restores correct air/fuel calculations for smoother idling
• Designed for fast 15 ms response to changing airflows
• Compatible with many Toyota/Lexus models that list corresponding part numbers
• Helps clear P0100–P0104 series codes when MAF-related

Which vehicles and part numbers does this FAERSI part replace?

This MAF is marketed as a direct replacement for numerous Toyota and Lexus applications including Camry, Tacoma, 4Runner, FJ Cruiser, Prius (1.5L), Avalon, Tundra, RAV4, RX, ES, GS and others where the listed cross-reference numbers apply. Always confirm fitment by matching your OEM part number or using the seller’s compatibility selector before purchase.

• Replaces factory numbers such as 245-1095, 336-60525, 2220421010 and many more
• Fits model years and engines in the product fitment list (Camry, Tacoma, 4Runner, Prius, etc.)
• If unsure, contact FAERSI customer service for compatibility verification

What should I do before and after installing this MAF sensor?

Before fitting the new MAF, clean the airbox and replace the air filter to prevent contaminated air from skewing readings. After installation, clear any stored fault codes and perform a short drive cycle so the ECU can relearn airflow calibration with the new sensor.

• Clean airbox and install a fresh air filter prior to fitting
• Disconnect battery or use a code reader to clear P0xxx codes after install
• Run the vehicle to allow ECU to adapt to the new MAF readings

What can I expect in terms of build quality and support?

The FAERSI MAF is constructed from plastic and aluminum and undergoes factory inspection plus extended testing. The listing notes fast response, OEM-level accuracy, and a one-year warranty with customer support available for replacements or refund if the unit is defective.

• Manufactured to meet OEM tolerance and response times
• Over 3,000 hours of product testing reported by the manufacturer
• One-year worry-free warranty and responsive customer service

Who is this for: drivers and mechanics who need a cost-effective, direct-fit MAF sensor for compatible Toyota and Lexus vehicles—especially when replacing a malfunctioning airflow meter that triggers rough idle, poor fuel economy, or P0100-series codes. Confirm vehicle compatibility by checking OEM part numbers or consult FAERSI support before ordering to ensure a correct match.