The East Enders have been ultra-busy in the January transfer window so far bringing in three new faces as they look to improve on their already impressive return to the Premier League.
Chamakh has not played a Premier League game since October and has had a tough 12 months at the Emirates Stadium being unable to force his way into the squad.
With two more strikers arriving at Arsenal in the summer, it was clear that Chamakh needed to get out on loan and West Ham could be the ideal place to come to prove a point to Arsene Wenger and the fans.
The Hammers now have a quartet of strikers to work with as Chamakh joins Modibo Maiga, Andy Carroll and Carlton Cole at Upton Park along with attacking midfield options in Kevin Nolan, Ricardo Vaz Te and Joe Cole.
The 28-year-old Moroccan international will stay in the East End until the end of the season and is happy with the move.
“I’m very happy to be here, I want to play and give my best for this team,” Chamakh told the clubs official website.
“I can bring my heading, some goals and we will see what else.
“I played with Alou Diarra in Bordeaux and we were champions together. I also know Mohamed Diame and Carlton Cole.
“I think this will be a very important move for me and I don’t want to waste any more time. I want to contribute immediately.
“I didn’t have opportunities to play recently, but I did well before and I know I am a very good striker.
“We played only one striker at Arsenal, so I didn’t play a lot, so I hope to do so more with West Ham.”