Performance Air Intake W/Heat Shield For Nissan Altima (2007-2012) with 3.5L V6 Engine RedStop letting your VQ35DE breathe through a restrictive, heat soaked plastic box and finally hear that V6 sing the way it was meant to. Performance Cold Air Intake with Heat Shield for Nissan Altima (L32) 3. 5L V6 If youve spent any time on the Altima forums, you know the L32 chassis is a sleeper, but the factory induction system is its biggest bottleneck. The stock air box is designed for silence, not flow, often trapping hot engine bay air and