The GTR come stock with the engine oil cooler in the right front bumper corner infront of the right front wheel.  The ram air from the main bumper opening is deflected through this duct to that eng. oil cooler core.  The left front bumper location is empty - and with the removal or downsizing of the window washer bottle ( HKS or equal small tank ) this is the perfectly systemtrical duct piece to use on the left side if you wanted to put in a Trans cooler or front Diff cooler etc.  MSRP new is $ 147 + s/h + Tax/.

  This piece is new sealed in the Nissan bag and comes with the steel mounting frame for a total of 2 pieces.  The the mounting frame - the MSRP goes up over $190 for the $ 99 bargin.