Lehman and Langer combined for a 10-under 62 on in the final round, tying with Sluman and Stadler (61) at 27-under-par 189.
"I had a great partner," Lehman said. "Bernhard played extremely well today. I was really proud of the way he hit the ball. We've had a lot of fun. It's been a good week."
The teams of John Cook-Joey Sindelar (64) and Loren Roberts/Mark Wiebe (65) tied for fourth place at 26-under 190.