TYC 2-13866 Alternator

TYC 2-13866 Alternator Overview

TYC 2-13866 is a 125-amp alternator built for select Buick, Pontiac, and related OE applications. It features an internal fan, internal voltage regulator, a regular pulley with 6 grooves, and clockwise rotation for direct replacement use in the correct charging system setup.

Compatible with 2002-2007 Buick Rendezvous, 2001-2005 Pontiac Aztek, and 2005 Pontiac G6, this alternator is specified for vehicles that require a 125A charging output and internal regulator configuration. The TYC 2-13866 is a practical OE-style replacement for restoring stable electrical performance.

Key Features

• 125A power generation for OE-level charging output
• Internal regulator position for simplified charging system matching
• Internal fan design
• Regular pulley with 6 grooves
• Clockwise rotation direction
• OE manufacturer reference: VA

Detailed Description

This alternator is designed around the electrical and mechanical specifications used in the listed Buick Rendezvous, Pontiac Aztek, and Pontiac G6 applications. The internal regulator and internal fan configuration help match the original charging system layout, while the 6-groove pulley supports belt-driven operation in the correct accessory drive setup. TYC 2-13866 cross-references ACDelco 334-1401 for the same application.

Use TYC 2-13866 when replacing a worn alternator in vehicles that need consistent battery charging, stable voltage control, and proper pulley alignment. It is a direct-fit style replacement for the specified applications and should be matched to the vehicle’s original alternator specifications before installation.

What This Alternator Helps Solve

• Battery warning light caused by charging system failure
• Low or inconsistent charging voltage
• Dim lights or electrical instability at idle
• Alternator noise from worn internal components
• Starting issues related to insufficient battery recharge

Installation Notes and Tips

• Verify the vehicle’s original amperage, pulley groove count, regulator position, and rotation direction before installation.
• Inspect the belt, tensioner, and electrical connectors during alternator replacement.
• Confirm fitment for 2002-2007 Buick Rendezvous, 2001-2005 Pontiac Aztek, or 2005 Pontiac G6 before ordering.
• After installation, check charging voltage at the battery to confirm proper system operation.

Quality Assurance

TYC manufactures this alternator to match the listed OE-style specifications, including 125A output, internal regulation, and the correct pulley and rotation configuration for the supported applications.