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⚡ Power up your BlackMax with precision and protection — never miss a watt!
The Saihisday 5-9KW Automatic Voltage Regulator is a high-performance replacement part designed for BlackMax portable gasoline generators ranging from 5000 to 8750 watts. Featuring adjustable voltage output between 160V and 260V, it ensures stable 240V power delivery while protecting your equipment from over-voltage, over-current, and short circuits. Compatible with a wide range of BlackMax models, this durable metal AVR supports up to 8.5KW engine power and is easy to install, making it an essential upgrade for reliable, long-lasting generator performance.






















| ASIN | B07FVRGP55 |
| Additional Features | Short Circuit Protection |
| Best Sellers Rank | #221,754 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #4,322 in Outdoor Generators & Portable Power |
| Brand | Saihisday |
| Brand Name | Saihisday |
| Color | Black |
| Current Rating | 3.5 A |
| Customer Reviews | 4.5 out of 5 stars 300 Reviews |
| Engine Power Maximum | 8.5 KW |
| Engine Type | 4 Stroke |
| Frequency | 60 hertz |
| Fuel Type | Gasoline |
| Ignition System Type | Recoil start |
| Included Components | Automatic Voltage Regulator |
| Manufacturer | Saihisday |
| Manufacturer Part Number | 5000 5700 7125 8750 |
| Material Type | Metal |
| Model Name | 5000 5700 7125 8750 |
| Model Number | 5000 5700 7125 8750 |
| Output Wattage | 8750 watts |
| Power Source | Fuel Powered |
| Recommended Uses For Product | Commercial, Residential |
| Running Wattage | 8500 watts |
| Runtime | 20 hours |
| Starting Wattage | 8750 watts |
| Total Power Outlets | 4 |
| UPC | 657390260851 |
| Voltage | 240 volts |
| Wattage | 8750 watts |
W**.
Works great.
Arrived right on schedule. Installed it on my generator and now I have electricity... It came set at 110 volts, I easily adjusted it up to 120 and now I can run my outdoor fans... It is too soon to say how long it will last, but well worth the price...
K**T
Finally a company product that works
Been trying to get an AVR that works. Others ordered from other companies failed and would not work. Purchased this one and it works great. All I had to do was tweek the voltage screw to increase it from 117VAC to 121.9VAC. I'm ordering another just for a back up. Its worth the cost to have this in stock ready to go during the winter in the event of some type failure. Its an electronic device so you never know.
I**S
Easy to Install
Works well so far. Havent used the generator a lot since install. Will update after some use.
C**R
Order the right one
Just right worked like it should
S**S
K
Worked
T**N
works just fine
The AVR ( auto voltage regulator) worked just fine in keeping a consistant load for the generator BUT this is just one time that was the problem make sure you test the coils to make sure there not shorted out ... which usually is the number 1 problem... you can also flash the generator but dont bother with the reverse drill method which usually dont work... if your not sure whats the problem go to You-tube there's tons of help there and more than likely theres someone on there who had the same problem as you.....
R**G
Quick restart
Quick delivery, fits perfectly, it was an easy fix
C**S
The new AVR was a good replacement
My generator was not generating the proper voltage. I had power but not full power from the generator. The new AVR fit perfectly and fixed my generator issue!
D**R
Régulateur de tension
Very good stuff
P**L
Works good.
Works good on a be 9000
Trustpilot
1 month ago
1 week ago