WAI 13715N Alternator

WAI 13715N Alternator Overview

The WAI 13715N alternator is a 100-amp, 100% new replacement unit built for vehicles that need steady charging output and reliable electrical performance. It uses an internal regulator, internal fan, and a clockwise rotation with a 6-groove serpentine pulley for direct OE-style service on select Lexus applications.

Compatible with Lexus GS430, GS400, LS400, SC430, and SC400 applications, this alternator is built for drivers replacing a worn charging unit on the 2001-2005 Lexus GS430 or other listed models. The WAI 13715N is engineered for consistent amp delivery in modern electrical systems.

Key Features

• 100 amp amperage rating for OE-style charging output
• 100% new construction, not remanufactured
• Internal voltage regulator
• Internal fan design
• Clockwise (right) rotation
• 6-groove pulley for serpentine belt systems
• Pulley included
• DENSO family application
• No decoupled or clutch pulley

Detailed Product Description

WAI builds the 13715N alternator with proprietary components and manufacturing processes to support long service life and stable performance. This unit is specified for vehicles that use a serpentine belt drive and an internally regulated charging system, making it a direct-fit replacement for select Lexus charging system repairs. The WAI 13715N alternator is a practical choice when restoring proper battery charging and electrical system operation on Lexus GS430, LS400, SC400, GS400, and SC430 models.

This part cross-references BBB Industries 13715 for the same application.

What It Helps Fix

• Battery warning light caused by low alternator output
• Slow battery charging after driving
• Dim headlights or unstable accessory power
• Electrical system voltage drop at idle or under load
• Charging failure from a worn or failed alternator

Installation Notes and Tips

Verify pulley groove count, belt type, rotation direction, and connector style before installation. This alternator uses an internal regulator and a serpentine pulley setup, so confirm the vehicle’s charging system matches the listed specifications. For best results, inspect the battery, belt condition, and charging circuit before replacing the alternator.

• Fits 2001-2005 Lexus GS430
• Fits 2002 Lexus SC430, Std
• Fits 1998-2000 Lexus GS400
• Fits 1998-2000 Lexus LS400
• Fits 1998-2000 Lexus SC400

Quality Assurance

WAI states that this alternator is 100% new and manufactured with proprietary components and processes to support maximum life and performance. That construction approach is intended to provide dependable charging output for the listed Lexus applications.