Dorman 917818 Mass Air Flow Sensor - Sensor Only Replacement

The Dorman 917818 Mass Air Flow (MAF) Sensor is a direct-fit replacement sensor engineered to restore proper engine operation on compatible Ford and Mazda vehicles. Designed as a sensor-only replacement, this part allows you to swap out just the failed sensing element rather than replacing the entire MAF assembly, saving significant time and money on your repair.

The mass air flow sensor is a critical engine management component that measures the volume and density of air entering the intake. This data is used by the engine control module (ECM) to calculate the correct fuel injection quantity and ignition timing. A failed or degraded MAF sensor commonly causes symptoms such as rough idle, poor fuel economy, hesitation under acceleration, and check engine light codes including P0100–P0104.

Key Features:

• Sensor-only replacement — no need to purchase the full MAF housing assembly
• Engineered to match OEM fit, form, and function for a direct plug-in installation
• Restores proper air/fuel mixture calculations for clean, efficient combustion
• Designed to address common failure modes of the original sensor element
• Compatible with select Ford and Mazda applications

Cross-Reference Part Numbers:

• Motorcraft: AFLS129, AFLS145, AFLS152, AFLS163, AFLS164, AFLS180RM, AFLS183, AFLS183RM, AFLS194RM
• Ford OEM: 1L2Z12B579AA, 1L2Z12B579BA, 1L5Z12B579AB, 1SDZ12B579A
• Hitachi: AFH7021
• Mazda OEM: 1F2213210B
• Standard Motor Products: MF0861, MF0862, MF0863

Dorman has been a trusted name in the automotive aftermarket for over 100 years, delivering repair solutions designed to put vehicle owners and installers first. The 917818 is built to get your engine running smoothly again with a straightforward, cost-effective repair.