2Kw AVR Square Voltage Regulator



AVR Voltage Regulator at Generator Parts World

This is a 2Kw to 4Kw Square AVR Voltage Regulator

This is a universal type square voltage regulator, also called an AVR. This voltage regulator is intended for use in 2Kw to 4Kw generator applications.

This voltage regulator has 1 large plug with 4 blades in side and 2 single female connections. The 2 bolt holes are on 3-7/8″ centers. The rectangle part of the AVR is 3-1/4″ by 1-1/2″ overall.

If your generator stops producing power the voltage regulator is one of the most common issues. First check your carbon brush assembly. The brush assembly should be making contact on both legs and connected with 2 wires. If the brush appears to be making contact you should visually inspect your AVR for burnt spots or blown capacitors. Voltage Regulators don’t always show signs of fault or issue. You will want to do further testing to find what your exact issue may be.

If your voltage regulator is defective this may not be your only issue. An AVR should last for at least 2000 hours in any generator. If your AVR does not have this much time used then you may have another issue. Even if your generator has over 2000 hours you may have an issue that caused the AVR to fail. If your voltage regulator hasn’t lasted very long there is a high chance there is something causing this failure. The most common issue with a faulty voltage regulator with low usage is excessive moisture or debris in the head. We suggest properly testing the generator prior to purchasing a new AVR or you can use a new AVR as a test to see if that is the only issue. The most common other issue is moisture or debris in the head, causing current to jump. Any replacement AVR may need to be adjusted when replacing.


Rating: 1kw to 4kw
Shape: Square / Rectangular
Electric Connection: 6 Wire (4 Blade Quick Connect & 2 Single Wires)
Bolt Connection: 2 Bolt – 3-7/8″ Center to Center
Capacitor Rating: 250v | 220uF
Size: Length – 4-1/4″ | Height – 1-5/8″ | Thick: 7/8″ (Case Only)
Adjustable: Yes

This voltage regulator will ship from one of our facilities in the United States. All orders ship next business day after cleared payment. We offer several different shipping methods with different delivery times. All of this information and more important details can be found in the shipping tab. Please review the shipping tab above this text for more information.

All of our parts are universal parts that are our own brand. These parts are not intended to be represented as OEM parts but represented as parts that are direct replacement parts for specific brands and models. This includes but is not limited to generators and other small engine powered equipment. Generator Parts World will offer a 90 replacement warranty of any part purchased from us under our 90 day replacement policy. Please review the terms and conditions for more information.

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Shipping Info

All orders will ship from one of our locations within the US, most commonly from Missouri. All orders ship next business day after cleared payment. Business days are Monday through Friday with the exception of holidays.

Our 2 Day Express option may use different carriers such as UPS, FedEx, USPS, or Amazon to offer the best delivery time available. The tracking for your order will be uploaded to PayPal and your order details here on our website. If you need your parts as fast as possible explore on of the shipping options detailed below. All estimated delivery dates below are the estimated time it will take to deliver your order once it ships.

Shipping Within the United States

Free Shipping using First Class Mail: 4 to 6 day delivery
USPS Priority Mail Service: 2 to 4 day delivery
USPS Express Service: 1 to 2 day delivery
UPS Ground Service: 1 to 4 day delivery
2 Day Express Service: 1 to 2 day delivery


Shipping Outside the United States

USPS First Class to Canada: Estimated 10 Days

USPS First Class Worldwide: Estimated 14 to 21 Days


In October of 2021 USPS slow mail delivery on First Class Mail and other services. Please be aware of possible delays by all carriers at peak times such as holidays. Below are some links that can be helpful in identifying delivery times to your location, holiday schedules, and possible delays by the 2 most common carriers we use, USPS and UPS.

USPS Service Alerts

USPS Holiday and Event Schedule

UPS Service Alerts

UPS Holiday Schedule

UPS Ground Shipping Time Map

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