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177345714910-0 - Northline Parts

Honda GX610 GX620 20A Regulator Rectifier SH711AA 31620-ZG5-033

SKU: NLT1U01275
$67.99 In Stock
$67.99
Sale price  $67.99 Regular price 
Ships for free in 2–4 business days.
This new aftermarket 20-amp voltage regulator rectifier is intended for the compatible models and reference numbers shown below. It cross-references SH711AA, 31620-ZG5-033.
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Compatible Models

We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.

Compatible equipment / model
  • Honda GX610
  • Honda GX620

Product Overview

A battery that stays discharged, lights that brighten with engine speed, or charging voltage outside specification can point to the regulator/rectifier after the stator, battery, grounds, and connectors are tested.

This 20-amp SH711AA-style regulator rectifies stator AC and limits charging voltage on compatible Honda GX610 and GX620 engine configurations. Match plug, case, mounting holes, stator output, and engine type code.

Key Features & Performance

  • 20-amp charging-system rating
  • Rectifies AC charging output to DC
  • Regulates battery charging voltage
  • References SH711AA and 31620-ZG5-033
  • New aftermarket electrical unit

Replaces Part Numbers

  • SH711AA
  • 31620-ZG5-033

Common Uses

  • Repairing a no-charge condition
  • Correcting charging over-voltage
  • Replacing a heat-damaged rectifier
  • Restoring battery maintenance on engine-driven equipment

Technical Specifications

  • Product Type: Regulator rectifier
  • Rated Output: 20A
  • Engine Families: GX610 and GX620
  • Condition: New
  • Replacement Type: Aftermarket

Installation & Fitment

  • Disconnect the battery before unplugging the regulator
  • Inspect the connector for melted terminals
  • Test stator AC output and grounds
  • Mount the unit where it can transfer heat correctly
  • Verify charging voltage at idle and governed speed

Compatibility Notice

Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.

Model, production date, serial number, dimensions, electrical or mounting configuration, installed options, and previous repairs can affect fitment. Compare the removed part and equipment information before purchase.

Frequently Asked Questions

Q: Can a bad stator damage a new regulator? A: A shorted stator or poor connection can prevent correct charging and may overheat components, so test the full circuit first.

Q: Is SH711AA the only fitment check? A: No. Compare the plug, mounting, amperage, and complete Honda engine type code.

Q: How do I confirm fitment before ordering? A: Match the original reference number, equipment model and serial number, dimensions, connector or mounting details, and the product photos. Do not rely on appearance alone.

Q: Is this made by the original equipment manufacturer? A: No. This is a new aftermarket part. Brand names and model numbers are used only to identify compatible equipment.

Part Summary

keywords: Honda SH711AA regulator rectifier, 31620-ZG5-033 replacement, GX610 charging regulator, GX620 20 amp rectifier, Honda engine not charging

Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.

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