The Detroit Lions needed help on the defensive line and made a move Wednesday to bolster the interior ahead of Tuesday's trade deadline.
Harrison, a first-team All-Pro selection in 2016, has proven durable on his seven-year career, appearing in 87 games with 86 starts since the 2013 season.
The 29-year-old Harrison's arrival should help out a Lions run defense that enters Week 8 ranked 30th in the league (139.3 yards allowed per game), and it comes at a good time.
On the heels of the loss, the Giants have now traded away two essential defensive players in the past 24 hours with a view to stocking up on future draft picks. On Tuesday, the team shipped cornerback Eli Apple to the New Orleans Saints in exchange for a fourth-round pick in 2019 and a seventh-round pick in 2020.
By parting ways with Harrison, who has three years remaining on his contract, the Giants also freed up more than $8 million under the salary cap in 2019.