Stock or Aftermarket diff?
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Stock or Aftermarket diff?
Hello, below is a picture of an gear limited slip diff I intend to use in my S4, can someone tell me if its mazda or aftermarket?
The stamped number reads BB14....
The stamped number reads BB14....
If by gear you mean Torsen, FC's did not come with a torsen differential from the factory. They sell aftermarket units (check mazdatrix) and is probably what you have. However FD's did have the torsen.
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