---
product_id: 428507173
title: "Voltage Regulator Rectifier Replacement for Onan P-Series 16HP-20HP B Engine 20 Amp 191-1748 191-2106 191-2208 191-2227 John Deere 318-420 Lawn Tractor"
brand: "gradora"
price: "R555"
currency: ZAR
in_stock: true
reviews_count: 9
category: "Gradora"
url: https://www.desertcart.co.za/products/428507173-voltage-regulator-rectifier-replacement-for-onan-p-series-16hp-20hp
store_origin: ZA
region: South Africa
---

# 20 Amp power rating Compatible with John Deere & Onan engines Direct OEM replacement Voltage Regulator Rectifier Replacement for Onan P-Series 16HP-20HP B Engine 20 Amp 191-1748 191-2106 191-2208 191-2227 John Deere 318-420 Lawn Tractor

**Brand:** gradora
**Price:** R555
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your ride with precision and ease!

## Quick Answers

- **What is this?** Voltage Regulator Rectifier Replacement for Onan P-Series 16HP-20HP B Engine 20 Amp 191-1748 191-2106 191-2208 191-2227 John Deere 318-420 Lawn Tractor by gradora
- **How much does it cost?** R555 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/428507173-voltage-regulator-rectifier-replacement-for-onan-p-series-16hp-20hp)

## Best For

- gradora enthusiasts

## Why This Product

- Trusted gradora brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built for Longevity:** Engineered to match or exceed original part durability, ensuring long-term performance.
- • **Reliable 20 Amp Output:** Delivers consistent 14.4V charging to keep your lawn tractor powered up and ready.
- • **Trusted by Pros & DIYers:** Highly rated with 4.4 stars and glowing reviews—join the community of satisfied users.
- • **Plug-and-Play Installation:** Easy direct replacement design means no hassle, no downtime—get back to mowing fast.
- • **Seamless OEM Compatibility:** Fits perfectly with John Deere 318-420 & Onan P-Series engines, eliminating guesswork.

## Overview

The Gradora Voltage Regulator Rectifier is a direct OEM replacement designed for Onan P-Series 16-20HP B engines and John Deere 318-420 lawn tractors. Rated at 20 amps and delivering a steady 14.4 volts, it ensures reliable charging performance. Easy to install and compatible with multiple OEM part numbers, this regulator is a top-rated, durable solution trusted by professionals and enthusiasts alike.

## Description

Buy gradora Voltage Regulator Rectifier Replacement for Onan P-Series 16HP-20HP B Engine 20 Amp 191-1748 191-2106 191-2208 191-2227 John Deere 318-420 Lawn Tractor: Spare & Replacement Parts - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: 5 stars - Working great so far.
Review: Works good so far. - My wheel horse 244-h quit charging, I determined the issue was a bad regulator. So after reading a bunch of reviews I ended up buying this one. It arrived in a couple days. The only issue was the hole did not have any threads in it, which is no big deal. I ran a 1/4-20 tap in it and got perfect threads. I installed it on the mower and it is charging perfectly now, roughly 14.7 volts at full throttle. If it lasts like the original did it will be a good purchase to fix my problem.

## Features

- Replaces OEM Numbers: 191-2227, 191-1748, 191-2106, 191-2208
- Compatible with John Deere 318-420 w/Onan Engines
- Compatible with Onan P Series Models: 16 17 18 19 20 HP Engines, 20 Amp Rating
- Compatible with Wheel Horse Onan P216G P218G P220G
- Easy to install and a direct replacement.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09KNHK43B |
| Best Sellers Rank | #37,507 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #90 in Agricultural Machinery Spare & Replacement Parts |
| Brand | gradora |
| Customer Reviews | 4.4 4.4 out of 5 stars (177) |
| Date First Available | October 29, 2021 |
| Item Weight | 2.89 ounces |
| Manufacturer | Gradora |
| Manufacturer Part Number | 318-420 |
| Model | Voltage Regulator Rectifier |
| OEM Part Number | 318-420，191-1748, 191-2106, 191-2208, 191-2227 |
| Package Dimensions | 5.83 x 2.52 x 1.3 inches |
| Voltage | 14.4 Volts |

## Images

![Voltage Regulator Rectifier Replacement for Onan P-Series 16HP-20HP B Engine 20 Amp 191-1748 191-2106 191-2208 191-2227 John Deere 318-420 Lawn Tractor - Image 1](https://m.media-amazon.com/images/I/61HsHMYv8IL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5 stars
*by J***R on November 25, 2025*

Working great so far.

### ⭐⭐⭐⭐⭐ Works good so far.
*by 0***0 on September 10, 2023*

My wheel horse 244-h quit charging, I determined the issue was a bad regulator. So after reading a bunch of reviews I ended up buying this one. It arrived in a couple days. The only issue was the hole did not have any threads in it, which is no big deal. I ran a 1/4-20 tap in it and got perfect threads. I installed it on the mower and it is charging perfectly now, roughly 14.7 volts at full throttle. If it lasts like the original did it will be a good purchase to fix my problem.

### ⭐⭐⭐⭐ It works
*by R***A on September 25, 2025*

Only drawback was bolt hole did not have threads. Other than that works well.

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**Shop now:** [https://www.desertcart.co.za/products/428507173-voltage-regulator-rectifier-replacement-for-onan-p-series-16hp-20hp](https://www.desertcart.co.za/products/428507173-voltage-regulator-rectifier-replacement-for-onan-p-series-16hp-20hp)

---

*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-21*