Prosource UG3600 AVR Automatic Voltage Regulator



This is an Prosource UG3600 AVR Voltage Regulator 

This is a generator voltage regulator. This part is a universal type part that is used in brush type generator heads. This voltage regulator has a 4 blade plug and 2 single wires. If your generator isn’t producing power the most common issue is the voltage regulator. You can test your regulator with an electrical tester. If you do not have a tester you can physically look for cracks or busted components.


Your voltage regulator can be seen in the end of the generator head. Though at times it can be mounted external to the generator head. To replace the voltage regulator locate the old one and replace it with the new one. The 4 blade plug and 2 single wires are the only connections. The 2 single wires attach to the carbon brush. The positive wire is labeled on the voltage regulator.


Your voltage regulator may need to be adjusted after installation. Often no adjustment is needed. If you don’t have the correct power output use the adjustment screw on the back of the regulator to turn the voltage up or down.


SPECIFICATIONSRating: 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 item will ship for FREE from our US warehouse. Your order will ship next business day with tracking uploaded to PayPal. Your package will ship with USPS with a delivery time of 3 to 5 days from cleared payment!


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All parts are universal parts. Any part we sell is not intended to be represented as an OEM part. All brands and models listed are done so to direct customers to direct replacement parts. The brand and models listed include but are not limited to generators or any 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

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