Valeo 849176 Alternator

Alternator Overview

Valeo alternator 849176 is a 100-amp charging unit built for select Toyota and Lexus applications. It uses an internal fan, internal regulator, and clockwise rotation to match the specified electrical setup for the vehicle.

As part of Valeo’s Alternator line, this unit reflects the brand’s focus on original equipment electrical systems. Valeo 849176 is a 100% new alternator, which removes the uncertainty associated with reused internal components.

Key Features

• 14-volt alternator with 100-amp output
• Internal fan and internal regulator design
• Clockwise rotation
• Aluminium housing for a lightweight construction
• 7-groove pulley configuration
• Technical number NRG12S031

Detailed Description

This Valeo alternator is engineered for charging-system replacement on Toyota Avalon, Camry, Highlander, Venza, and RAV4 applications, plus Lexus RX350 coverage. The 100-amp rating and 14-volt output align with the electrical demands listed for these vehicles, while the internal regulator and internal fan support the specified alternator design. Part number 849176 is also identified by technical number NRG12S031.

This part cross-references Bosch AL3330X and Remy 12647 for the same application.

What It Is Used For

• Restoring battery charging performance when output has dropped
• Replacing a worn alternator with the correct electrical specification
• Addressing charging-system warning lights caused by alternator failure
• Correcting low-voltage conditions that affect starting and accessories
• Replacing a unit with pulley, rotation, and regulator specifications that no longer match

Installation Notes and Tips

Verify pulley groove count, rotation direction, amperage rating, and connector fitment before installation. Confirm the vehicle’s charging-system requirements against the listed application data for Toyota and Lexus models. Part number 849176 should be matched to the original alternator specification before removal of the existing unit.

Quality Assurance

Valeo is a global original equipment supplier of alternators and has specialized in electrical systems since 1923. The brand states that its premium alternators are 100% new, and its alternator technology received a PACE Award for reducing voltage drop and improving fuel economy.