KNOWN FAULT · Porsche

Glued coolant pipes that come apart on the Mezger engine (911 Turbo and GT3)

Sources are not verified in real time and no entry confirms that your car is affected.

Engine / equipment: Mezger engine in the 911 996 and 997 Turbo, GT2 and GT3
Period mentioned: 1999–2012
Symptoms: Sudden coolant loss over the rear wheels; corroded front pipes that drip; plastic oil-cooler elbows that crack.
Possible cause described: Owners and specialists on the 911UK forum explain that Porsche glued the coolant-pipe fittings instead of welding them, and that they can separate and empty the system; the fix is to weld or pin them, ideally with the engine out. The Mezger does not have the IMS-bearing problem of the Carreras.
Check for the garage: Ask whether the pipes have been welded or pinned; look for coolant residue in the engine bay and under the car.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.

Sources from the original database

Anonymous answer, no personal data.

How much does it cost to repair this fault?

No verified estimate; ask the garage for a quote.

A rough figure from the original database, not an up-to-date quote.

How is it checked?

Ask whether the pipes have been welded or pinned; look for coolant residue in the engine bay and under the car.

What are the symptoms?

Sudden coolant loss over the rear wheels; corroded front pipes that drip; plastic oil-cooler elbows that crack.

Which cars and years does it affect?

Find garages near you and, before you say yes, check whether the quote is reasonable.

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