Howard had 21 points and 14 rebounds as Orlando beat the Lakers 108-104 for its first victory in the series.
The Lakers' defensive struggles cost them a chance to move within one victory of a championship.
Turkoglu led the Magic with seven assists (against only one turnover) to go with 18 points and six rebounds.
Alston broke out of his slump with 20 points, including 11 on 4-of-4 shooting from the field in the first quarter.
The Magic and Lakers battled down to the wire: The game was tied at 99-99 with 2:41 remaining, but Orlando got the best of it down the stretch.
Howard finished 5-of-6 from the field and 11-of-16 from the free-throw line.
Lee dunked over Fisher in one of the more electrifying plays of the series.
Kobe cooled off after a 7-of-8 start. He struggled down the stretch with turnovers and missed shots and free throws.
Lewis made 8-of-14 shots and scored 21 points. He was a big part of a Magic attack that connected on a Finals-record 62.5 percent from the field.
Pietrus accounted for 18 of the Magic's 24 bench points.
Howard has attempted only 22 shots in the first three games of the Finals.
Pietrus sparked the Magic off the bench with 18 points, two more than he scored in the first two games combined.