Honda K20Z3/K24A8/K24Z1 Mass Airflow Sensor 37980-RTA-003

Honda K20Z3 / K24A8 / K24Z1 Mass Airflow Sensor (MAF) – 37980-RTA-003

If your K-series is idling like garbage, drinking fuel, or constantly throwing airflow codes, the MAF is one of the first things to check. This OEM Honda MAF sensor is the proper fix—not a random parts store gamble.

This is the genuine mass airflow sensor that belongs in the 2006–2011 Honda Civic Si, along with the right Honda CR-V and Honda Element models listed below. It’s a direct fit sensor that bolts into the factory housing, reads airflow correctly, and lets the ECU do its job—no tuning changes, no hacks. Just plug it in, clear the codes, and you’re back to factory-correct air metering.

If you’re chasing weird fuel trims, random hesitation, or inconsistent AFRs on your Honda K-series MAF replacement, a tired sensor can absolutely be the culprit. This MAF sensor unit keeps your air-fuel ratio where it should be, keeps the idle stable, and helps long-term drivability—whether it’s a 200k-mile commuter or a lightly modded weekend car with an intake. We run these same units on our own 8th Gen Civic Si because they just work.

Fitment

• 2006–2011 Honda Civic Si
• 2007–2009 Honda CR-V
• 2007–2011 Honda Element

Key Features

• OEM Honda Mass Airflow Sensor – 37980-RTA-003 Honda part (SKU: OHA-37980-RTA-003)
• Correct airflow readings so your fuel trims, AFRs, and timing aren’t guessing
• Direct plug-and-play Honda K-series MAF replacement – no wiring or tuning changes
• Helps bring back smooth idle, clean throttle response, and normal fuel economy
• Fits the stock airbox and most intakes that reuse the factory K20Z3 / K24A8 / K24Z1 air flow sensor housing