Rear/Downstream O2 Sensor
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Joined: Apr 2017
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From: South Jersey
Rear/Downstream O2 Sensor
Hello,
I have a question for the forum. I am trying to find an answer to a question I have. Is there a difference between the downstream O2 sensor in a B5244S4 and B5244S7 engine? I was curious if the same O2 sensor was used for both engines. Any help or advice is greatly appreciated.
Thank you,
Jim
I have a question for the forum. I am trying to find an answer to a question I have. Is there a difference between the downstream O2 sensor in a B5244S4 and B5244S7 engine? I was curious if the same O2 sensor was used for both engines. Any help or advice is greatly appreciated.
Thank you,
Jim
Super Moderator
Joined: Mar 2012
Posts: 9,601
Likes: 540
From: Burlington, VT
I saw PN 30651201 as the rear O2 sensor for the S7 engine (Cali low emissions with two cam sensors) versus PN 30677175 for the S4. Also saw a split by serial number and emissions code plate - Seems like the best thing would be to call a dealer and provide your VIN to ask for the OEM part number.
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