Valeo 849054 Alternator

Valeo 849054 Alternator for Nissan Applications

The Valeo 849054 alternator is a 12-volt charging system component built for Nissan vehicles that use a Valeo OE-style design. With a 110-amp output, internal fan, internal regulator, and clockwise rotation, it supports stable electrical performance for daily driving and accessory loads.

Valeo’s Alternator line focuses on OE-level charging system replacement parts, and this unit follows that approach with a 100% new construction and aluminum housing. It is a direct-fit option for select Nissan Altima, Sentra, Rogue, and Rogue Select models.

Key Features

• 12-volt alternator with 110-amp amperage rating
• Internal fan and internal voltage regulator
• Clockwise rotation direction
• 6-groove pulley configuration
• Aluminum housing for charging system durability
• Valeo OE family design for select Nissan fitments
• Technical number: TG12S217
• Part number: 849054

Detailed Product Overview

This Valeo 849054 alternator is engineered for Nissan charging system service where OE-style fitment and electrical output matter. It is listed for 2007-2013 Nissan Altima, 2007-2010 Nissan Sentra, 2010-2013 Nissan Rogue, 2014-2015 Nissan Rogue Select, plus select 2011-2012 Nissan Sentra and 2011-2012 Nissan Altima applications. The 110-amp rating supports consistent battery charging and vehicle electrical demand, while the internal regulator helps simplify the charging system layout.

This part cross-references Bosch AL2427X for the same application.

What It Helps Address

• Battery warning light caused by alternator output loss
• Low charging voltage in Nissan Altima, Sentra, Rogue, or Rogue Select models
• Dim lights or unstable electrical performance
• Charging system noise or irregular alternator operation
• Failure from worn internal charging components

Installation Notes and Tips

Verify pulley groove count, rotation direction, connector style, and mounting alignment before installation. Confirm the vehicle’s exact year and build date where notes apply, especially for 2010 and 2009 Nissan Sentra and 2010 Nissan Altima fitments. Compare the existing unit to the Valeo 849054 alternator and confirm the OE number TG12S217 when matching the replacement.

For best results, inspect the battery, belt condition, and charging cables during alternator replacement. A weak battery or worn drive belt can affect charging performance even after the alternator is installed.

Quality Assurance

Valeo has supplied electrical system components since 1923 and is recognized as an OE alternator supplier. This alternator is built as a 100% new unit rather than a remanufactured part, which helps reduce the risk associated with reused internal components.