2019-2020 Subaru Ascent H4 2.4L Downstream Bank 1 Sensor 2
2014-2018 Subaru Forester H4 2.0L Downstream Bank 1 Sensor 2
2020 Subaru Legacy H4 2.4L Downstream Bank 1 Sensor 2
2020 Subaru Outback H4 2.4L Downstream Bank 1 Sensor 2
2015-2020 Subaru WRX H4 2.0L Downstream Bank 1 Sensor 2
AM-AutoParts

AM-AutoParts

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O2 Oxygen Sensor

Validate This Part Fits Your Vehicle


    2019-2020 Subaru Ascent H4 2.4L Downstream Bank 1 Sensor 2
    2014-2018 Subaru Forester H4 2.0L Downstream Bank 1 Sensor 2
    2020 Subaru Legacy H4 2.4L Downstream Bank 1 Sensor 2
    2020 Subaru Outback H4 2.4L Downstream Bank 1 Sensor 2
    2015-2020 Subaru WRX H4 2.0L Downstream Bank 1 Sensor 2

Verify exact fit by year/make/model and options (ABS, rotor size, wheels, etc.).

What’s in the Box

Product Attributes

Thread Diameter: 0.71 in
Wrench Size: 0.87 in
Overall Length: 11.02 in
Wiring Harness Length: 161 mm
Thread Diameter: 18 mm
Wrench Size: 22 mm
Overall Length: 280 mm
Wire Quantity: 4
Terminal Quantity: 4
Wiring Harness Length: 6.34 in
Connector Shape: Circle
Connector Gender: Female
Terminal Gender: Female
Thread Size: M18x1.5-6e
Sensor Type: Narrow-Band
Terminal Type: Ring
Universal Or Specific Fit: Specific
Grade Type: Standard Replacement
Mounting Type: Threaded
Heated: Yes
Sensor Design: Thimble

Reference Numbers


DENSO: 234-4988
Walker Products: 250-241160
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10 Year Warranty

This item is backed by our 10-year warranty. If this item fails due to a manufacturing defect during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.

Please note: Any modifications to an item of any kind before contacting us will void warranty coverage. Please contact us before modifying the part so we can help.

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