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| Condition | new |
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Description
xPart Overview
The 22641-AA000 Oxygen Sensor (Denso 234-9018) is a precision wide-band / heated oxygen sensor designed for Subaru boxer engines. It monitors the oxygen content in the exhaust stream and feeds real-time data to the ECU for closed-loop fuel trim control, helping maintain optimal air-fuel ratio, lower emissions, and stable idle. Built to OE-equivalent specifications by Denso for direct plug-and-play fitment on the Impreza and Outback platforms. Backed by KOEEP's 1-year warranty and free worldwide shipping.
Vehicle Compatibility
| Make | Model | Year | Engine / Trim |
|---|---|---|---|
| Subaru | Impreza (GD / GH / GE) | 2004–2014 | 2.0L / 2.5L NA boxer (upstream / downstream positions) |
| Subaru | Outback (BP / BR) | 2005–2014 | 2.5L SOHC boxer |
| Subaru | Legacy (BL / BM) | 2005–2014 | 2.5L NA boxer (selected markets) |
Key Specifications
| OEM Part Number | 22641-AA000 (Subaru) / Denso 234-9018 |
| Sensor Type | Heated zirconia oxygen sensor (4-wire harness) |
| Material | Platinum electrode / stainless steel housing with OE-grade connector |
| Condition | Brand New Aftermarket (Denso reference) |
| Warranty | 1 Year |
Why Choose This Part?
- Precision Fit: Built to OEM-equivalent spec for 2004-2014 Subaru Impreza and 2005-2014 Outback boxer engines.
- Restored Engine Performance: Re-establishes correct air-fuel ratio for smoother idle, better throttle response, and reduced emissions.
- Premium Quality: Denso-equivalent electrode and harness design with rigorous QC for long service life.
- Free Worldwide Shipping + 1-Year Warranty: Delivered globally with full KOEEP coverage.
How to Order
Click Add to Quote above or email us at support@koeep.com with the part number 22641-AA000 / Denso 234-9018 and your Subaru model/year. We'll respond within 24 hours with availability and pricing.
Ready to order this part?
Click Add to Quote or email support@koeep.com with the SKU and your vehicle details.
Add to Quote →Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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