0
Mechman high output alternators · Authorized dealer
Many QX56s on the road today have years of towing and road trips behind them, and a tired charging system is often the first thing to show it. This page lists the two Mechman 400 amp units for the 2004-2013 Infiniti QX56 5.6L, so you can swap the original part for an Infiniti QX56 high output alternator built for added loads.
Every QX56 here uses the 5.6L V8, but the alternator changed partway through. 2004-2006 models take one Mechman billet unit, while 2007-2013 models take a different one. Both are rated at 400 amps, so the choice comes down to year, not output. Select your year and engine in the vehicle finder above and the matching part appears. The same pair is listed for the Nissan Armada and Nissan Titan, which use the same 5.6L V8.
This is a body-on-frame luxury SUV, and owners use it that way: boat and camper towing with a brake controller, rear DVD screens, aftermarket audio, and off-road lights for hunting or ranch trips. An Infiniti QX56 high output alternator covers that demand with room to spare. Mechman high output alternators also suit an older vehicle where the original unit is simply worn out. On a high-mileage truck, inspect the plug and regulator wiring too; our harnesses and regulators cover that. See the full Infiniti lineup for other models.
Shop Pay InstallmentsPay over time, powered by Affirm
Lease-to-own with SnapNo credit needed¹
Pay later with SezzleFlexible payment options
Shop Pay Installments: Rates from 0-36% APR. Payment options through Shop Pay Installments are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. Snap: The advertised service is a lease-to-own agreement provided by Snap RTO LLC. Lease-to-own financing is not available to residents of Minnesota, New Jersey, and Wisconsin. ¹ Not all applicants are approved. While no credit history is required, Snap obtains information from consumer reporting agencies in connection with submitted applications, and your score with those agencies may be affected. Sezzle: Issued by WebBank or Sezzle. See loan agreement for details. Refurbished items are not eligible for financing or leasing.
Before you browse
We use cookies to run the store, to measure how it performs, and — only if you allow it — to show you our products on other sites. You can change your mind at any time. Read our privacy policy
Necessary cookies always run — the store cannot work without them. Everything else is your call.
Necessary
The cart, checkout, sign-in, fraud prevention and security. These cannot be switched off.
Preferences
Remembers your currency, region and recently viewed products.
Analytics
Measures how the store is used so we can fix what is broken and improve what is not.
Marketing
Lets us measure our advertising and show you our products on other websites. Turning this off also opts you out of the sale and sharing of your information for advertising.
