Zamora divides opinion amongst R's supporters, but Carragher was full of praise for the experienced front-man when analysing the side's 4-1 win over West Bromwich Albion on Monday Night Football.
The former Liverpool defender believes that Zamora offers QPR an important outlet when he plays and he feels that when he is included Chris Ramsey's men are a better team for it.
"We said it for a long time, how important he is to QPR," Carragher said. "He can't play every week, maybe, at times, he can't play away from home, but whenever he does play they look a lot more dangerous."
Zamora scored QPR's third goal against West Brom, with a belting strike, and it helped them to a victory which was vitally important.
The R's had looked in danger of being cut adrift, but the three points they collected at the Hawthorns moves them back into contention and Gary Neville believes they now have a chance of staying up.
Neville believes that Chris Ramsey's side still have a lot to do if they are to avoid the drop, but he says that they have the capabilities to put together a run of victories.
"Slim, but that win gives them a real chance," Neville said when asked how he rates QPR's chances of survival.
"They've got talented players, but you have to question if they've got the mentality. That will give them huge confidence. You look at QPR's fixtures and think they're going to struggle, but we've seen teams in the past going on runs and they're the type of team that have got the players to do it, but it's whether they can actually go and do it now."
QPR still have to face the likes of Chelsea, Liverpool and Manchester City over the remainder of the season, but they will be buoyed by their recent success and they are currently only three points away from safety.