The Bengals (9-4) improved to 6-0 at Paul Brown Stadium on a cold, windy day - 28 degrees at kickoff with a wind chill of 19 and light flurries.
Dalton gave his most consistent performance since October, throwing for three touchdowns that kept the Bengals ahead and finishing it off with an 8-yard run in the fourth quarter. Dalton was 24 of 35 for 275 yards without a sack or interception.
Despite the loss, the Colts are in position to clinch the AFC South later Sunday if Tennessee lost at Denver.
Copyright 2013 by The Associated Press