Looks pretty complete to me :



as to the TB, if no one on the forum steps up, then you will find that carguts ( Blacksburg, SC ) has 22 of them ( A 113 141 0125 ) on the Car-Part.com--Used Auto Parts Market site for $85 each ....
( look under 2003 Mercedes SL class, then 230 Type, SL500, SL55 , then sort by price.
They will be on page 8 )

Nice folks, by the way. I was stupid and ordered the wrong one the first time ( W112 / 68MM ), they took it back and sent the W113 at no charge.

( talk to them and ensure the one they are sending has A 113 141 0125 on the black plastic cover )