NGK AU0128 Auto Trans Speed Sensor

Buyer fitment guide only intended as reference. Please use catalogue search by vehicle to ensure proper fitment.

• Mazda FN11-21-551
• Mazda FN12-21-551A
• Mazda FN11-21-551PT
• Mazda FN1121551
• Mazda FN1121551PT
• Mazda FN1221551A
• Beck/Arnley 0905047
• Dorman 917-649
• HOLSTEIN 2VSS0081
• BWD SN7139
• Standard Motor Products SC154
• Echlin VSS739
• Beck/Arnley 0905047
• Dorman 917649

• OE MATCH: Manufactured to operational performance standards to meet or exceed OE fit, for and function to ensure proper monitoring of the transmission's speed. Sensor output signal matches OE specifications.
• SUPPORT: Backed by a 3 year 36,000 mile warranty.
• THE NTK DIFFERENCE: High strength thermoplastic is resistant to temperature, moisture and chemicals. Pre-installed o-ring precisely matches OE material and diameter for ease of installation and superior sealing.
• The Automatic Transmission Speed (ATS) Sensor measures the rotational speed of the transmission shafts. Input and output transmission speed are monitored and relayed to the engine control module or transmission control module by either an analog or digital signal for proper shift points, speedometer operation and transmission diagnostics. Reasons for replacement include check engine light illumination, poor or erratic shifting, and no or erratic speedometer operation.

• Other Names: Auto Trans Input Shaft Speed Sensor, Auto Trans Output Shaft Speed Sensor, Auto Trans Speed Sensor

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