WAI 8490-3N Alternator

WAI 8490-3N Alternator Overview

The WAI 8490-3N is a 100% new alternator built for vehicles that need steady charging output and dependable electrical performance. With a 105 amp rating, internal regulator, and included pulley, it supports modern charging demands in a direct-fit replacement format.

Compatible With Chevrolet and GMC applications that use the DELCO family alternator design, this unit is built for drivers searching for a 105 amp alternator, internal regulator alternator, or serpentine belt alternator replacement.

Key Features

• 105 amp output for consistent charging performance
• 100% new construction, not remanufactured
• Internal fan and internal regulator
• Clockwise rotation, right-hand direction
• 6-groove pulley included for serpentine belt systems
• DELCO family design for application matching
• Part number 8490-3N for easy identification

Detailed Product Description

WAI engineers this alternator to deliver the amperage needed to power today’s vehicle electrical loads, including lighting, controls, and onboard electronics. The 8490-3N uses proprietary components and manufacturing processes to support long service life and stable performance. It is a direct replacement choice for Chevrolet and GMC owners looking for an alternator with internal regulation, clockwise rotation, and a serpentine pulley setup.

This part cross-references 8490-3 and 10464484 for the same application. The 8490-3N part number also helps confirm the correct DELCO-style alternator when matching OE references and service replacements.

Common Problems This Alternator Can Address

• Battery warning light caused by weak charging output
• Dim headlights or unstable electrical performance
• Battery drain from an alternator that no longer maintains voltage
• Charging system noise related to worn internal components
• Fitment issues when replacing a DELCO-style alternator on Chevrolet or GMC vehicles

Installation Notes and Tips

Verify pulley groove count, rotation direction, amperage rating, and regulator type before installation. Confirm the vehicle uses a serpentine belt system and a clockwise-rotation alternator with an internal regulator. Compare the original unit and OE part number references to ensure the WAI 8490-3N matches the charging system configuration on your Chevrolet or GMC application.

Quality Assurance

WAI builds this alternator as a new unit using proprietary components and processes to support maximum life and performance. The brand’s manufacturing approach focuses on delivering the output required for modern electrical systems while maintaining consistent replacement quality.