6/12/2009
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Porsche Crankshaft Bearing Housing Update
There have been complaints of noise from the engine (rattling, clicking, knocking) at speeds of between 2200 and 3000 rpm on some 2005 2.7L Porsche Boxter (M96) engines.
Upon inspection of complete engines replaced under Porsche factory warranty, it has been determined that they are being replaced unnecessarily because of the above-mentioned engine noises. The noise is caused by the crankshaft bearing housing.
As of March 29,2005, a crankshaft bearing housing with thrust blocks made of nodular cast iron is installed on all 2.7L engines from model year 2005.
If customer complaints are received regarding the above-mentioned noises on an engine manufactured before the specified date of introduction, the crankshaft bearing housing should be replaced instead of replacing the complete engine.
P/N of bearing housing (with steel inserts) 996.101.007.07.
Some or all of the preceding technical information was provided by the
Automotive Parts Remanufacturers Association (APRA). For more
information on technical bulletins available through APRA call
703-968-2772 or visit www.AutoBulletins.com.