1981 Nissan Maxima Engine: 2.4L L6; Position: Heater To Pipe;. 1981 Nissan Maxima Engine: 2.8L L6; Position: Heater To Pipe;. Part Type: HVAC Heater Hose. 1984 Nissan Maxima Position: Pipe To Valve;. 1982 Nissan Maxima Engine: 2.4L L6; Position: Pipe To Valve;.