When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Quick question for those in the know. With all the IMS discusssion floating around I got interested in what and when my engine was built. My 2006 997.1 has a 09/05 build date (per drivers door sticker) and the engine I can see is a M97 (rear right corner) but these is also a circle diagram in the casting that looks like it may be the build date of the engine. Anybody know on how to read this? TIA.