While i was going to replace the Exhaust pipe gasket on passenger' s side after cat one in my LS400 2000 model.
I noticed that the old gasket is similiar to this one in this photo
http://www.partsplaza-admin.co.uk/Pa.../109738002.JPG
Which is a flat type gasket,

But the part which i got its number from T O Y O D I Y .com (17451 - 50020 ) is having a different look. It is a donut gasket, something like this
http://ecx.images-amazon.com/images/...hL._SS500_.jpg

Any one who have changed this gasket could help me with gasket look? Does it should be a flat or donut. ??!!

 

I've changed that gasket before and it is the flat type.

 

one is before the catlisticand one is after both looks very similar but one is bgerlook at autozone.com because napa cat have the same for font an back and is the flat type jmvindel