2006 PORSCHE 911 M96.67 (3.6L flat-6)/M96.70 (3.8L flat-6) (997)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Intermediate shaft bearing wear in early 997 models
• Rear main seal leaks

First checks

• Check IMS bearing condition before high mileage
• Inspect rear main seal and valve guides for leakage

Before replacing parts

• Save fault codes and freeze-frame data before clearing anything.
• Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
• Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.

Important notes

• Market variants exist primarily in options and minor tuning; engine specs broadly consistent globally.
• This profile applies to first generation 997 Porsche 911 models produced from 2005–2008.