Land Rover ERR6621 Upper Plenum Intake Manifold Gasket for Discovery 2 and Range Rover P38 A high-quality aftermarket intake manifoldgasket for your Rover. Fits between the upper and lower halves or your intake manifold. Replaces Land Rover OE part ERR6621 Fits the Land Rover Discovery 2 (1999 - 2004), Range Rover P38 4.0 (1999 - 2002), and Range Rover P38 4.6 (1999 - 2002).