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Infiniti QX80 High Output Alternators

Seven passengers, a trailer out back and screens glowing in the second seat: the 2014-2022 Infiniti QX80 asks a lot of its charging system. The Infiniti QX80 high output alternator listed here is a 400 amp Mechman unit for the 5.6L V8, giving a full-size luxury SUV real headroom once the accessories start piling up.

  • 1 product
  • 2014–2022
  • 400 Amp
  • Billet options
All Infiniti alternators

1 product

Electrical Headroom for a Full-Size Family Hauler

QX80 owners rarely stop at the factory equipment. A cargo-area subwoofer box, a 12V fridge for camping weekends, a trailer brake controller, auxiliary lighting and a bank of USB-C chargers for the kids all draw from the same source. When the original unit falls behind, it shows up as dimming lights at idle, a battery that never quite tops up and amplifiers that run out of voltage on bass notes. A 400 amp Infiniti QX80 high output alternator keeps voltage steady through that load, whether you are idling at a campground or creeping through summer traffic with the AC on high.

Fitment and Matching Upgrades

The billet unit on this page is listed for every 2014-2022 QX80 with the 5.6L V8, and it is the same alternator offered for the Nissan Titan XD and the Nissan NV3500. Confirm your year and engine in the vehicle finder above before ordering. Mechman high output alternators pair well with heavier charge wire, so look at our amp wiring kits if a large amplifier is part of the plan. Shopping for another model? Browse all Infiniti alternators.