Upstream and Downstream O2 Sensor Set of 2 for Subaru Forester 2013-2020 2.5L, Impreza 2012-2020, Outback, Legacy 2013-2019, Crosstrek 2016-2020

A set of two heated oxygen (O2) sensors, one upstream and one downstream, for Subaru flat-four models. The upstream sensor helps the engine computer set the air-fuel mixture, and the downstream sensor checks how well the catalytic converter works. A failing sensor often causes a check engine light, rough running, poor fuel economy or a failed emissions test.

Vehicle Fitment

• Subaru Crosstrek 2016-2020 H4 2.0L
• Subaru Forester 2013-2020 H4 2.5L (naturally aspirated)
• Subaru Impreza 2012-2020 H4 2.0L
• Subaru Legacy 2013-2019 H4 2.5L (DOHC)
• Subaru Outback 2013-2019 H4 2.5L (DOHC)
• Subaru XV Crosstrek 2013 and 2015 H4 2.0L; 2014 H4 2.0L (gas)

Position: Upstream and Downstream.

Replaces Part Numbers

350-34052, 250-24487, 250-54084, 350-64031, 35034052, 25024487, 25054084, 35064031, OS5579

Specifications

• Sensor type: heated
• Wires: 4
• Overall length: 425 mm and 400 mm
• Mounting type: threaded
• Connector: male
• Quantity: 2

What's Included

• 2 x oxygen sensors (1 upstream, 1 downstream)

Before You Order

Match the part number above with the one on your old sensors, or send us your VIN and we will confirm fitment for you.

Shipping & Returns

Ships within the United States. Orders are processed within 1 business day. 30-day returns with free return shipping and no restocking fee. Questions? Email info@getorvexa.com or text +1 (252) 705-1212.