Valeo 501805 Alternator

OE-Quality Alternator for Nissan and INFINITI

Valeo 501805 is a 14-volt alternator built for direct-fit charging system replacement on select Nissan and INFINITI vehicles. It uses an internal fan, internal regulator, clockwise rotation, and a serpentine pulley with 7 grooves to match the original equipment setup.

Compatible With 2011-2013 INFINITI QX56, 2014-2023 INFINITI QX80, 2017-2020 Nissan Armada, 2018-2021 Nissan NV2500, and 2018-2021 Nissan NV3500. This Valeo alternator 501805 is engineered for OE-style fitment and charging performance.

Key Features

• 14-volt alternator with 150-amp output
• Internal fan and internal voltage regulator
• Clockwise rotation for correct belt drive operation
• Serpentine pulley with 7 grooves included
• 3-terminal female connector for vehicle-specific electrical connection
• 100% new unit, not remanufactured
• Built with premium rare earth magnets to support power output in a compact design

Product Details

Valeo’s Alternator line focuses on OE-quality electrical replacement parts for modern charging systems. Part number 501805 follows the original equipment layout used on select Nissan Armada, NV2500, NV3500, and INFINITI QX56/QX80 applications, helping maintain proper charging voltage and stable electrical performance. The design is tested under thermal, vibration, and electrical stress conditions to verify durability in demanding service.

This part cross-references DENSO Auto Parts 210-4010 for the same application.

Common Charging System Issues

• Battery warning light or charging system fault codes
• Low battery voltage after driving
• Dim lights or unstable electrical output
• Noise or belt-drive concerns from a worn alternator pulley or bearing
• Charging failure on high-demand vehicles with multiple electrical loads

Installation Notes

Verify connector style, pulley groove count, rotation direction, and amperage rating before installation. Confirm the vehicle uses the listed 3-terminal female connection and serpentine belt configuration. Inspect the belt, tensioner, and charging circuit condition during replacement to help ensure proper system operation.

Quality Assurance

Valeo has supplied automotive electrical systems since 1923, and this alternator is built as a new OE-style replacement rather than a remanufactured unit. It is tested for extended exposure to heat, vibration, and electrical load to support long-term reliability in compatible Nissan and INFINITI applications.