Intermediate Shaft Bearing (IMSB) – 996 Registry
Intermediate Shaft Bearing (IMSB) The intermediate shaft bearing (IMSB) is used in all Porsche 996, 997.1, 986, and 987.1 vehicles between 1997-2008 worldwide. The IMSB uses a ball bearing design that was inadequate for the application it was intended to serve. The official and unofficial story is that the ball bearing was a permanently sealed ...
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