Esteban Lozada joined London Wasps ahead of the 2013/14 season from former Club, French Top 14 side Agen.
The Argentinian International adds experienced depth to a pool of talented locks already at Wasps which includes Tom Palmer, Joe Launchbury, Kearnan Myall and James Cannon.
Lozada has been capped 22 times for Argentina having made his debut in 2006. Lozada most recently played this June (2013) against England and he represented his country in the 2007 World Cup.
He has previously represented Toulon and Edinburgh.