These are Valve Retainers or concave washers, in the head. With time they get wear from the spring and then malfunction. That is what happened to mine, No broken springs, valve are not bent, but they are beat up from the concave washer going bad.

Nobody has them new, not even Porsche that I can find, so if you know of any, please let me know. I tried to replace them 3 years ago and couldn't find them then so I used some used ones and that's why they failed again!

Part number is #928 105 449 04 and we need 8 of them. Porsche sells them for $6.00, but they are in Germany, we are still waiting on the ones ordered 3 years ago.

Thanks

Scottsdale Porsche said for a couple of extra Marks or Euro's they will be shipped from Germany within a week, 3 years ago I didn't pay extra, we'll see if this works.

I would try Lindsey Racing if that doesn't work for you.

None at Lindsey, thanks anyway.

Pelican Parts says they have them.... in Germany. Web Page says they ship within 4 days. ???

www.pelicanparts.com/cgi-bin/smart/more_...ALVE%20SPRING%20SEAT

Good Luck

Everybody has them...in Germany! I'll give them a week then try something else. I hear Germany is nice this time of year, maybe a road trip?

Thanks CJ