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|Connector Type:||Direct fit|
|Thread Size:||M18 mm|
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Q:why does it say 2 required
A:Hi Fritz! Since you didn't mention the specific vehicle, it's hard to tell for sure. To give you the correct information I would need the year, make, model and engine size of the vehicle.
Q:Is this 100% the downstream sensor behind the catalytic converter? This OEM picture looks different than the OEM part currently installed.
A:Yes, this Denso Oxygen Sensor Direct Fit (Part No. 234-4446) is a downstream oxygen sensor. For further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and one of our representatives would be more than happy to assist you.