SCITOO 12V 130A Alternator for Nissan & Infiniti – S7 Pulley, CW Rotation, Internal Regulator

SCITOO’s 12V 130A alternator is a direct-fit replacement built to restore reliable electrical charging for compatible Nissan and Infiniti vehicles.

This high-output alternator is designed as a like-for-like replacement for a range of Nissan and Infiniti models, offering 130 amps of charging capacity, clockwise rotation, an internal regulator and fan, and an S7 multi-groove pulley. It matches multiple OEM reference numbers (including 11256, 23100-ZH00A, 31400-82Z10, and TG15C113) so you can swap a worn or failed unit without modifying your vehicle’s charging system. The unit is precision-machined, bench-tested, and supplied new to help maintain battery health and support modern electrical loads.

Which vehicles and engine types does this alternator fit?

This alternator fits a wide range of Nissan trucks, SUVs, and select Infiniti models. Fitment covers V6 4.0L and V8 5.6L engine families across model years noted by the manufacturer. Always verify your existing alternator’s OEM number before purchase to ensure exact compatibility.

• Nissan Armada (2007–2015) V8 5.6L
• Frontier, NV1500/NV2500/NV3500, Xterra, Pathfinder, Titan across listed years with V6 4.0L or V8 5.6L
• Infiniti QX56 compatibility where the listed OE numbers match
• OE references: 11256, 23100-ZH00A, 31400-82Z10, 2650538, TG15C113

What are the key electrical and mechanical specifications?

This alternator is rated at 12 volts and 130 amps with clockwise rotation. It uses an internal voltage regulator and an internal fan to control temperature and output, and the S7 pulley fits multi-rib serpentine belts commonly used on these vehicles. Components are CNC-machined and bearings are tested to OE tolerances for reliable operation.

• Voltage: 12V; Amperage: 130A
• Rotation: Clockwise (CW); Pulley: S7 multi-groove
• Regulator: Internal (IR); Fan: Internal (IF)
• Condition: New unit, precision-machined housing and tested bearings

How difficult is installation and what should I check during replacement?

Installation is straightforward for anyone experienced with basic automotive maintenance, though some models may require raised support or belt tensioner tools. Start by disconnecting the battery negative, remove the drive belt, unbolt the alternator, transfer any necessary brackets, and install the new unit. Check belt tension and electrical connections, and confirm charging voltage with a multimeter after installation.

• Disconnect battery negative before starting
• Remove serpentine belt and unbolt alternator mounting points
• Ensure correct belt tension—too loose causes poor charging, too tight stresses bearings
• Verify charging output with a voltmeter after installation

Who is this alternator for? If you drive a Nissan Armada, Frontier, Pathfinder, Titan, Xterra, NV-series van, or an Infiniti QX56 and your vehicle uses any of the OEM numbers listed, this SCITOO alternator offers a cost-effective, direct-replacement option. It’s aimed at owners, independent mechanics, and fleet technicians who need a reliable, tested replacement that fits without modification. Choose this unit when you need restored charging performance, OEM-referenced fitment, and a compact, fully assembled alternator with a built-in regulator and fan. For questions about fitment or installation specifics, SCITOO’s technical support can assist with vehicle- and part-number verification.