“High School Musical” star Corbin Bleu has extended his run in Broadway tuner “In the Heights” by three months, with his stint now running through much of the summer.

New end date could potentially aid the show in drawing increased crowds from the annual school-vacation influx of family tourists, who could be swayed by Bleu’s profile with teen auds.

Weekly sales for “Heights” swelled to the million-dollar range in the wake of the tuner’s 2008 Tony win for top tuner, but momentum has since slowed somewhat.

The January addition of Bleu to the cast didn’t cause an instant sales spike (as did, for instance, Rialto stints for Fantasia Barrino and Clay Aiken in other shows). But in recent weeks the production, like many others on the Main Stem, has seen sales rise during the individual frames when tourists returned to Gotham during their winter or spring breaks.

Bleu will now topline “Heights” through July 25.