Keep the fuel mix dialed in and your engine breathing right with the Spectra Premium Mass Air Flow Sensor (MA259). It drops in as a direct-fit replacement for the 2003-2005 Mercedes-Benz C230 with the L4-1.8L engine, restoring the airflow signal your engine management system relies on to meter fuel correctly.
A mass air flow sensor measures the volume and density of air entering the intake so the ECU can calculate how much fuel to deliver. When the original sensor drifts or fails, that reading goes bad — and so does the way the engine runs.
If a faulty mass air flow sensor is the cause of these symptoms, this Spectra Premium unit replaces it. Diagnose the underlying cause before replacing, since these signs can have other sources.
What vehicle does this fit?
It is a direct-fit replacement for the 2003-2005 Mercedes-Benz C230 with the L4-1.8L engine. Check the Buyer's Guide tab to confirm fitment for your vehicle.
What does a mass air flow sensor do?
It measures the amount of air entering the engine's intake so the engine control module can calculate and deliver the correct amount of fuel.
What are the signs of a bad mass air flow sensor?
Common signs include rough idle, hesitation on acceleration, stalling, reduced fuel economy, and an illuminated check engine light. Diagnose the cause before replacing.
Will replacing this sensor fix my check engine light?
If a faulty mass air flow sensor is the cause, replacing it addresses that. Because these symptoms can have other causes, confirm the diagnosis before installing.
Is this a direct replacement?
Yes, it is designed to install in place of the original sensor on the listed application without modification.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
