Genuine Nissan Alternators
Alternator
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Genuine Nissan Alternators
Your Nissan's alternator does more than keep the battery charged. Once the engine is running, it powers the ignition system, lights, climate control, and every electronic module on board. When it starts to fail, the signs tend to show up gradually: dimming headlights at idle, a battery warning light, slow cranking after short trips, or a whine from the front of the engine. Left alone, a weak alternator will eventually drain the battery faster than it charges, and the vehicle shuts down mid-drive. Replacing it with a genuine Nissan alternator restores factory charging performance without the guesswork that comes with off-brand units.
Built for Your Nissan, Not Adapted to It
Every alternator on this page is a new, genuine Nissan part sold as a complete assembly and backed by a manufacturer warranty of at least 12 months. These are the same units Nissan specifies for the assembly line, so the mounting points, pulley alignment, wiring connectors, and charging output match your vehicle's original specification exactly. That precision matters with charging systems: an alternator with the wrong output profile can shorten battery life and trigger electrical faults that are difficult to trace.
Our catalog covers engines across the Nissan lineup. You'll find alternators for the Altima's 2.5L engine (part number 23100-9HF0A), the Frontier's 4.0L flex-fuel engine (23100-9BM0A), the Rogue's 1.5L turbo (23100-6RC0A), the Rogue Sport (23100-4BB0A), and the Armada's 3.5L (23100-7JA0A), along with units for many other applications. Charging output and mounting details vary by engine and production date, and some part numbers apply only to specific build ranges, so confirm fitment before you order.
How to Find the Right Alternator
Confirming fit takes a minute. Search by your exact Nissan part number or your VIN, or use the Add Vehicle to Confirm Fit tool to filter the catalog down to parts that match your year, model, and trim. If the old unit is already out of the vehicle, the part number stamped on its housing is the fastest route to an exact match. Type it straight into the search bar. Many of these alternators also carry a core charge, which is listed up front on each product page so there are no surprises at checkout.
Ordered Through a Real Nissan Dealership
NissanPartsWarehouse.com is owned and operated by Peoria Nissan, a franchised Nissan dealer in Peoria, Arizona. Every OEM Nissan alternator we sell comes through Nissan's own parts network, the same source our dealership's service department pulls from. We've also joined forces with NissanAutoParts.net to bring both catalogs together on one site. DIY owners, independent repair shops, and wholesale buyers all order from the same genuine inventory.
One more tip from the parts counter: while the charging system is apart, inspect the drive belt that spins the alternator. A glazed or cracked belt can cause undercharging even with a healthy new unit, and swapping it during an alternator job saves doing the same work twice. You'll find genuine replacements in our Belts & Hoses section, along with the filters, spark plugs, and wipers your Nissan needs between major services.
Nissan Alternator FAQs
Is it my battery or my alternator?
A battery that keeps dying even after a full charge usually points to the alternator. Two quick checks: if the headlights dim at idle and brighten when you rev the engine, charging output is weak; and a healthy charging system should read roughly 13.5 to 14.5 volts across the battery terminals with the engine running. A reading near 12 volts means the alternator isn't doing its job.
How do I find the right alternator for my Nissan?
The most reliable method is searching by VIN, since some alternator part numbers apply only to specific production ranges within the same model and engine. You can also enter the Nissan part number from your old unit's housing, or use the Add Vehicle to Confirm Fit tool to filter by year, model, and trim.
Are these alternators new or remanufactured?
New. Every alternator listed here is a genuine Nissan part in new condition, sold as a complete assembly, not a rebuilt or remanufactured unit.
What is a core charge?
A core charge is a deposit common on parts with rebuildable cores, like alternators. Where one applies, it's listed right on the product page alongside the price, so you know the full amount before checkout.
Do genuine Nissan alternators come with a warranty?
Yes. Every alternator on this page is covered by a manufacturer warranty of at least 12 months.