Tucker's exploits helped the reigning Super Bowl champion Ravens post their fourth-straight victory and move just one game behind Cincinnati for first place in the AFC North division.
In addition, the Ravens maintained their tie with Miami for the second and final AFC wild card spot - and Baltimore hold the tiebreaker over the Dolphins.
The Lions needed the victory just as much, but their fourth defeat in their last five games dropped them to 7-7 - and into third in the NFC North behind Chicago and Green Bay.
Baltimore quarterback Joe Flacco connected on 20-of-38 passing attempts for 222 yards. Jacoby Jones caught six passes for 80 yards.
Ravens coach John Harbaugh said a touchdown or two wouldn't have gone amiss, but with the regular season winding down he wasn't going to argue with the victory.
"It's a big win, you take them any way you can get them right now, and that was big for us," Harbaugh said.
Lions quarterback Matthew Stafford was again plagued by turnovers. He was intercepted three times, including twice in the fourth quarter.
"I didn't play my best game by any means," said Stafford, who directed a scoring drive on Detroit's first possession.
"I felt like we had a good opening drive, put seven (points) on the board.
"For one reason or another the rest of that half, and even into the third quarter, it was tough for us to get a rhythm."