WAI 21238N Alternator

Alternator Overview

This WAI alternator, part number 21238N, is a 100% new unit built for modern electrical demand. It delivers 135 amps and uses an internal regulator, internal fan, and decoupled clutch pulley for stable charging performance.

Compatible With Honda Civic, Honda CR-V, Honda Accord, and Acura Integra applications, this alternator is a fit-focused replacement for vehicles using a serpentine belt drive and clockwise rotation. The 7-groove pulley is included, and the Valeo family design supports direct replacement needs for the listed applications.

Key Features

• 135-amp output for higher electrical load requirements
• 100% new construction, not remanufactured
• Internal regulator and internal fan design
• Decoupled clutch pulley with 7-groove serpentine pulley
• Clockwise rotation configuration

Detailed Description

WAI part number 21238N is engineered to supply the amperage needed by today’s vehicle electrical systems. It is built as a new alternator rather than a remanufactured unit, using proprietary components and manufacturing processes aimed at consistent output and service life. Fitment includes 2018-2026 Honda Civic, 2017-2025 Honda CR-V, 2018-2022 Honda Accord, and 2023-2026 Acura Integra applications.

The Valeo family design, internal regulation, and decoupled pulley setup make this alternator a practical replacement for vehicles that rely on a serpentine belt system. If you are replacing a worn charging unit on a Honda Civic, Honda CR-V, or Honda Accord, part number 21238N matches the listed application requirements.

What It Helps Solve

• Low charging output from a failing alternator
• Battery warning light caused by charging system issues
• Electrical instability from worn internal components
• Noise or belt drive concerns related to alternator pulley wear
• Charging performance loss under higher accessory demand

Installation Notes

Verify pulley type, rotation direction, amperage rating, and belt configuration before installation. This alternator is specified with clockwise rotation, an internal regulator, and a serpentine pulley layout, so matching the original charging system configuration is important for proper operation.

Quality Assurance

WAI states that this alternator is 100% new and manufactured with proprietary components and processes to support maximum life and performance. Part number 21238N is cross-referenced to Walker Exhaust 21238 for the same application.