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Mechman high output alternators · Authorized dealer
Underneath its leather and wood trim, the Infiniti QX4 is a body-on-frame SUV with real trail ability, and the 2001-2003 3.5L models have a loyal following among budget overlanders. This page lists the two Mechman 400 amp units for those years, so you can fit an Infiniti QX4 high output alternator that keeps up with lights, a winch and camp gear.
A QX4 built for the trail usually collects a light bar, ditch lights, a fridge in the cargo area, a CB or GMRS radio, and sometimes a winch on a front bumper. Winching and night driving with every light on can pull more than an original alternator can supply, and a dead battery at a remote campsite is a serious problem. An Infiniti QX4 high output alternator rated at 400 amps gives that equipment a dependable source, and Mechman high output alternators use a billet case suited to dusty, bumpy miles.
Both units fit the 3.5L V6, but the alternator changed for the final model year. 2001-2002 QX4s take one Mechman billet unit and 2003 models take another. Enter your year and engine in the vehicle finder above to see the right match. On a vehicle this age, inspect the plug and regulator wiring as well; our alternator harnesses and regulators cover the supporting parts. A deep-cycle option from our batteries collection pairs well with a fridge setup. See all Infiniti alternators for other models.
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