NGK Subaru Forester 2004-1999 Direct Fit Oxygen Sensor

NGK Subaru Forester 2004-1999 Direct Fit Oxygen Sensor

Marsoni

M251S

$97.71

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

NGK Subaru Forester 2004-1999 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 doesn't fit precisely into place. You can see in the photo that the pleats just end with no frame on the sides to seal to the body of the housing. You can wiggle the end pleat into place but there's nothing holding it there so I don't know how long it will stay there. Not a big deal for me, but if you live on a dirt road, there could be enough air bypassing the filter that you may get a dusty car sooner. Price was fine, but I won't buy this filter again.

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Reviewed in the United States on January 13, 2025

Verified Purchase

BikerGuy

Massapequa, US

★★★★★ 5

fit for purpose

easy install. works great.

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Reviewed in the United States on March 2, 2026