cmorales954

I am trying to determine what the proper part numbers are for OE springs for a 991.1 C2 3.4 non-PASM

I can find 991-343-531-10-504 and 991-343-531-06-504 -- but which is which? The dealer websites only discern them using colors, and not spring rates.

Also, what are the springs that come with the PASM option, and are those interchangeable with non-PASM ? Are they 10mm shorter? The spring rates seem just a tad bit more:

https://cimg1.ibsrv.net/gimg/www.6sp...6d096d4b9f.png

JuanK20

If you look up these part #s on Sunset parts, one says for "Sport Suspension" and the other says "Without Sport Suspension".

I'm assuming yours is "without": 991-343-531-06-504

cmorales954

When I look them up, neither of the two I provided says they are FOR Sport Suspension. One says they are WITHOUT. The other doesn't mention Sport Suspension at all.

It's worth nothing there is a THIRD part # (991-343-531-08-504) that explicitly says it is FOR Sport Suspension, but the two I asked about are different, hence my confusion.

cmorales954

Any other input from folks? Desperate to find the right parts but cant figure it out. What JuanK20 said is not correct, based on the part numbers I included. Its an easy mistake to make.