WAI 21151N Alternator
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WAI

WAI 21151N Alternator

Brand WAI 21151N
12 12
Fan Type Internal
Rotation Direction Clockwise (right)
Family Mitsubishi
Regulator Type Internal
Amperage Rating 105
Fits Honda · 4 vehicles

100% new construction. Not remanufactured, with proprietary components and processes.

105 amp output. Built to supply the electrical demand of modern charging systems.

Internal regulation. Integrated regulator and fan design in a Mitsubishi-family alternator.

Cross-references Walker Exhaust 21151, 31100-50Z-G01 and A005TZ0091A for the same application. See all 4.

$249.33Free shipping
In stock · usually ships same day before 1pm CST
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Step 2 — Quantity
Order total $249.33
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
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Alternator Overview

This WAI alternator, part number 21151N, is built for charging-system replacement on compatible Honda Fit applications. It is a 100% new unit, not remanufactured, and is engineered to deliver the amperage needed for modern electrical loads.

Key Features

  • 105 amp output for stable charging performance
  • Internal regulator for integrated voltage control
  • Internal fan design for compact alternator construction
  • Clockwise rotation, right-hand rotation configuration
  • 100% new construction with proprietary components and processes

Detailed Description

WAI part number 21151N is a new alternator designed for vehicles that require a Mitsubishi-family unit with internal regulation and a 105 amp rating. The clockwise rotation and internal fan layout match the specified application details, while the new-build construction supports consistent electrical output for daily driving demands. Fits 2017-2020 Honda Fit, N/A. This part cross-references Walker Exhaust (e.g., 21151) for the same application.

For Honda Fit charging-system service, 21151N provides a direct replacement option when the original alternator has weakened output, unstable voltage, or charging warning lights. The Mitsubishi family designation and internal regulator specification make it a relevant match for the listed fitment.

What It Is Used For

  • Restoring charging output when the alternator no longer maintains system voltage
  • Addressing battery drain caused by insufficient alternator amperage
  • Replacing a unit with internal regulator or fan configuration requirements
  • Correcting charging-system warning lights tied to alternator performance

Installation Notes and Tips

Verify the vehicle’s alternator family, amperage rating, rotation direction, and regulator type before installation. Confirm belt alignment, electrical connections, and mounting points against the original unit. Use the listed fitment details for 2017-2020 Honda Fit applications and compare the part number 21151N with the removed component before final installation.

Quality Assurance

WAI states that this alternator is manufactured as a 100% new unit using proprietary components and processes to support long service life and consistent performance.

Related reading

This part fits 4 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelTransmissionNotes
2020HondaFitManualMitsubishi IR/IF, 105 Amp
2019HondaFitManualMitsubishi IR/IF, 105 Amp
2018HondaFitManualMitsubishi IR/IF, 105 Amp
2017HondaFitManualMitsubishi IR/IF, 105 Amp
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Walker Exhaust — 2115131100-50Z-G01A005TZ0091AAHGA103