LeBron and Bosh went to the Finals during all four years they played together.
Chris Bosh has never made the NBA Finals without LeBron James. And the Heat won just 37 games in their first season after James left to return to Cleveland. But now, after Miami has gotten off to a 9-4 start to this year, the Heat are placing themselves in the drivers' seat (or at least the passenger's one) to win the East.
Bosh is pumped about it. From Jason Lieser of the Palm Beach Post:
Bosh on this season: "This is a chance for us to write our legacy without 'Bron, honestly.