NissanPartsDeal.com offers the wholesale prices for genuine 2021 Nissan Armada parts. Parts like A/C & Heater Control Units are shipped directly from authorized Nissan dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 8 Cyl 5.6 L GAS. Grade/Trim: Midnight Edition, Platinum, S, SL, SV.