Heat exchanger for a snowmobile engine air intake

A snowmobile comprising:

• a frame including a tunnel, the tunnel having an inverted U-shape and comprising a top portion, a left side portion and a right side portion, the top, left side and right side portions at least partly enclosing a space;
• at least one ski connected to the frame;
• an engine supported by the frame and having an engine liquid inlet and an engine air inlet;
• a rear suspension assembly connected to the tunnel;
• a drive track disposed around the rear suspension assembly and at least in part in the space, the drive track being operatively connected to the engine;
• a first heat exchanger comprising a heat exchanger liquid inlet and a heat exchanger liquid outlet, the heat exchanger liquid outlet fluidly communicating with the heat exchanger liquid inlet and with the engine liquid inlet, the first heat exchanger forming part of the top portion of the tunnel, the first heat exchanger being operable to dissipate heat toward the space from liquid passing through the first heat exchanger;
• and
• a second heat exchanger comprising a heat exchanger air inlet and a heat exchanger air outlet, the heat exchanger air outlet fluidly communicating with the heat exchanger air inlet and with the engine air inlet, the second heat exchanger forming part of the top portion of the tunnel, the second heat exchanger being operable to dissipate heat toward the space from air passing through the second heat exchanger.