NGK Subaru Legacy 1994-1991 Direct Fit Oxygen Sensor

NGK Subaru Legacy 1994-1991 Direct Fit Oxygen Sensor

Marsoni

M251S

$109.00

Get it in 3 business days with 1 day shipping. Friday, May 29

NGK Subaru Legacy 1994-1991 Direct Fit Oxygen SensorNTK is the world's largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle's on board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. Providing constant closed loop feedback to the ECU, oxygen sensors help to control the air fuel ratio while alerting OBDII systems of possible problems with fuel delivery or catalytic

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This works really well! I used it several times and really saw a difference. Unfortunately I had a root canal done and the following day I decided to whiten and I thought I was going to die! I didn’t know my front tooth was going to be that sensitive from the tooth canal. That was my fault and only telling this story as a warning! Do not use this after dental work unless your dentist says ok! Otherwise it works amazingly!

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Reviewed in the United States on May 2, 2026