# NGK 15-20 Subaru WRX / 14-18 Forester Direct Fit (B1S2) Oxygen Sensor

NTK 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 converter efficiency. A ceramics company at our core, NTK uses state-of-the art technology enabling control of the ceramic element used in our oxygen sensors from raw material to finished product. Trust The Sensor Specialist for full-line market support and OE application technology.

-   ADVANCED CERAMIC SENSOR ELEMENT: 3-stage contaminant-resistant plasma jet and deposit trap overcoat protects against element poisoning

This Part Fits:

Year

Make

Model

Submodel

2014-2018

Subaru

Forester

2.0XT Premium

2014-2018

Subaru

Forester

2.0XT Touring

2015-2021

Subaru

WRX

Base

2015-2021

Subaru

WRX

Limited

2015-2021

Subaru

WRX

Premium

## Details

- **Price:** 215.95 CAD
- **Vendor:** NGK
- **Type:** Oxygen Sensors

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 215.95 CAD | In stock |

## Images

- Photo - Primary
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- Photo - out of package
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> Source: [Standard Auto Part](https://www.standardautopart.com/products/ngk-15-20-subaru-wrx-14-18-forester-direct-fit-b1s2-oxygen-sensor)
> Updated: 2026-06-27