Product Description:

(100% factory tested to meet or exceed all original equipment specifications.

Quality components for proper fit and long-life performance.

Each sensor has application specific design to ensure a perfect fit for easy installation.)

Interchange Part Number: 22641AA150, 250-54027, 234-9122

Placement on Vehicle:Upstream

Quantity: 1 pcs

Type: 4-wire 

Installation: directly replace and easy to install

Built to strict quality standards and use superior quality parts

Please double check the photos and part number in the link if it is same with your original part.

If you have questions about the product or your order, please feel free to contact us.

 IT IS FIT FOR:

Make	Model	Year	Engine Size	Position	Note
Saab	9-2X	2006	H4 2.5L	Upstream	B1S1, EJ253 Eng. Code
Subaru	Forester	2006-2010	H4 2.5L	Upstream	B1S1, EJ253 Eng. Code
	Impreza	2006-2011	H4 2.5L	Upstream	B1S1, EJ253 Eng. Code
	Legacy	2004	H4 2.5L	Upstream	B1S1, EJ253 Eng. Code
	Legacy	2006-2009	H4 2.5L	Upstream	B1S1, EJ253 Eng. Code
	Outback	2004	H4 2.5L	Upstream	B1S1, EJ259 Eng. Code, SULEV
	Outback	2005	H4 2.5L	Upstream	B1S1, EJ253 Eng. Code, Calif-ESV
	Outback	2006-2009	H4 2.5L	Upstream	B1S1, EJ253 Eng. Code

How to install the oxygen sensor?

Step 1 - Some sensors are equipped with a heat shield that must be removed before the sensor removal, this is performed by removing any mounting bolts.

 

Step 2 - By using a regular socket it minimizes potential damage to the sensor body and the threads, this technique helps avoid stripping the old sensor upon removal.

 

Step 3 - Then, locate and disconnect the wiring connector, this step should be done before removing the sensor if the wiring is still attached.

 

Step 4 - Its important that the wiring harness connectors are exactly the same, each sensor is unique to it's position and is located in the system by its connector configuration. (Note: some replacement sensors have a universal electrical connector that must be configured to the wiring of the old sensor.)

 

Step 5 - Use a small wire brush to help clean the threaded port to ensure a proper seal of the new sensor. Gently install the new oxygen sensor by hand while keeping the wiring and connector free from bends.

 

Step 6 - Gently tighten the sensor while keeping wiring free from damage, these sensors need to be fairly snug to avoid leakage.

 

Step 7 - Once the sensor is tightened, reinstall any heat shields or bracing that had to be removed.

 

Step 8 - After the heat shield has been reinstalled, mount the connector to it's holder and reattach the connector back onto the wiring harness. If the car has diagnostic trouble codes, they will need to be cleared.