It is one piece and comes with new tie rod ends on it also. I got mine from germanstar.net and it arrived very carefully packed. It was made in Italy, I forget the brand but it worked out fine. And of course you can get one from this site also. I think on this site they call it a "Tie Rod Assembly" even though usually it is called Center Link or Drag Link.

Mike

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra