STANDARD MOTOR PRODUCTS
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STANDARD MOTOR PRODUCTS MAS0257  
$97.79
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Standard® is the premier professional engine management brand in the automotive aftermarket today. Standard leads the way in advanced automotive technology with more than 40,000 products for complete vehicle coverage.

Features & Benefits:
  • 100% new, never remanufactured, so there's no leftover debris that can cause sensor failure.
  • 100% computer-tested to ensure the ECU receives accurate airflow readings under hard engine conditions, which are required to balance and deliver the correct air/fuel ratio to the engine in order to achieve clean burns.
  • Proprietary sensing elements provide accurate airflow output to ECU over wide range of ambient temperatures.
  • Manufactured to strict quality standards to ensure each part outperforms other air flow sensors in aftermarket.
Check for Vacuum Leaks First!

Vacuum leaks present symptoms similar to a faulty MAF Sensor. When replacing the MAF, always check for vacuum leaks, too. Common sources include:

  • Cracked or loose Vacuum Hoses / Connectors - an audio Stethoscope can help detect air induced sounds from vacuum leaks.
  • Leaking Intake Manifold Gasket (found in the "Engine" category) - Vacuum Gauge readings below 17-22 in-Hg (normal manifold vacuum at sea level) at idle may indicate an intake manifold gasket leak.
    • Note: As elevation increases, readings decrease. Subtract 1 in-Hg from normal manifold vacuum reference for every 1,000 feet increase in elevation above 2,000 feet.
  • Stuck open PCV Valve - remove the PCV Valve and gently shake it; if it does not rattle, the valve is clogged or dirty and should be replaced.
  • Cracked Intake Boot (found in the "Engine" category)
Videos

Cleaning Your MAF Sensor

Standard Brand MAF Sensors

Additional Resources

RockAuto Newsletter: Maintaining the Optimal Air/Fuel Mixture
OEM / Interchange Numbers: 226808U301, 226808U320

Warranty Information:
36 Months / 36,000 Miles
Warranty Details