Hi can anyone identify this dual copper crush washer and let me know what its for? The one of the bottom. Copper exhaust nut and clamp are in the pic for size reference.

https://www.rx7club.com/picture.php?...ictureid=24449

I am swapping on a good set of twins and when putting on the new set this dual crush washer fell to the ground. I do not remember taking anything like this off the car and can not figure out where it came from.

I am also doing the vacuum hoses so the UIM, LIM, acv, air pump etc... are off the car.

Thanks

-George

 

that is the crush washer for the OMP.

 

I think we have a weiner... I mean winner

 

thanks guys. i changed to ss omp lines and dont remember taking that off. it must have fell on the cross member and finally fell to floor when putting the turbos on.

 

Make sure you replace all CCWs you remove with new ones. Surefire way to have a bunch of nasty oil leaks all over your engine block.