Zoom on the Predator 4375
In summary, the Predator 4375 is a compact portable generator especially useful for:
- RV travellers who wish to upgrade their experience to another level
- People occasionally participating in sporting competitions, open-air performances and outdoor festivals
- DIYers who wish to improve their efficiency with tools
- Homeowners who want to be sure of their ability to power their fridges, cooking tools, heating and lighting equipment during power failures
- Professionals in need of safely powering high-intensity work or lighting equipment
In the sections ahead, the power characteristics, availability of various outlets, the portability, and any additional features of the device shall be discussed, including its emission compliance information.
Power & Run Time
The Predator 4375 is powered by a 212 cc (6.5 hp) OHV 4-stroke engine. It delivers 120/240V, runs on gasoline and offers a running wattage of 3500W as well as a peak wattage of 4375W.
With a noise rating of 72 dBA (just slightly more noisy than a vacuum cleaner), the generator features a simple traditional pull-start mechanism.
Thanks to a fuel capacity of 4 gallons, the 4375 can operate for around 16 hours at 50% load with a full tank (fuel consumption around 0.25 GPH).
The control panel features the following 5 AC outlets:
Additionally, it features 1 DC outlet: there's a 12V 8A (cigarette lighter style) receptacle allowing you to easily charge your batteries.
As it features a twist-lock L14-30R receptacle, the 4375 is transfer switch ready: in case of a power outage, you will be easily able to connect it to a breaker box and power your household.
The dimensions of the Predator 4375, which are L23.3 x W18.7 x H19.3 in, and its typical, open frame design provides stability and enables the generator to be raised above ground level. The featured design is ideal for the outdoors and all tough environments.
As the generator's weight is 103.5 pounds, manually moving it or transporting it may be challenging, despite the fact that it is technically considered 'portable' (movable). However, its challenging mobility is solved by a wheel kit (separate purchase), which will ease its displacement, once it is on the floor.
A light indicator serves to show you when its oil levels are insufficient.
The generator allows for a quick, easy and convenient assessment of its gas level, as it is equipped with a built-in fuel gauge.
From a security point of view, the generator is equipped with an automatic low oil shut-off and an overload protection (circuit breaker), giving you a peace of mind during use.
Regarding its accessories, besides the aforementioned features, the Predator 4375's box includes the typical documentation and an owner's manual (opens in a new tab), letting you start it right off the bat.
The Predator 4375 is EPA-approved and CARB-compliant. Thus, selling and purchasing this generator is allowed in each of the 50 states, including California.
Moreover, it features a spark arrestor, so it is adequate for use in forested areas.
The Predator 4375 versus other generators
The following charts are provided to give you an idea of how some of the key specs of the Predator 4375 compare to generators of similar power (between 3000 and 4000 W).
- As its weight is 103.5 pounds, the Predator 4375 falls in the expected weight range of the devices in the 3000-4000 rated wattage category. In terms of weight, one of the champions in their power range is the WEN GN400i, standing at just 66.1 lbs.
- As this generator has its lowest possible noise of 72 dBA, it should be considered noisier compared to its peers of a comparable running wattage. For those who are looking for a less noisy device, we suggest the Cat INV4000E. With just 51 dBA, it is one of the most quiet devices in this power range.
- With a run time of around 16 hours at 50% load, the 4375 has one of the highest run times, compared to its similarly powerful peers.
- While the run time is an important parameter, it is dependent on the fuel tank’s capacity and thus, doesn’t say much on its own unless we consider fuel consumption as well. This generator, with an estimated fuel consumption of just 0.25 GPH (gallon per hour) at 50% load, is one of the more fuel efficient generators, for the previously mentioned wattage range. If you wish to acquire one of the most gasoline efficient products of this power range, the Westinghouse iGen4200, with a fuel consumption of 0.17 GPH could be in your good books.
Here's a list of the most popular specific comparisons:
As you can see from this interactive chart, when compared to other 3000-4000W generators, the Predator 4375 is on the cheap side of the price range.
It can therefore be a really good buy if you're looking to acquire a budget generator.
The bottom line
- GFCI Outlets
- High run time
- Fuel efficient
- Decent weight (103.5 lbs)
- No data center
- No electric start
- Wheel kit not included
- Weak warranty
- On the noisy side (72 dBA)
Features and Specifications
|Engine||212 cc OHV 4-stroke|
|Voltage||AC: 120/240V 60 Hz, DC: 12V|
|Running watts||3500 W|
|Starting watts||4375 W|
|Running amps (@120/240V)||29.2/14.6 amps|
|Peaks amps (@120/240V)||36.5/18.2 amps|
|Run time @50% load||16 h|
|Run time @25% load||Unknown|
|Automatic Voltage Regulation||Yes|
|AC outlets|| |
|DC outlets||1x 12V 8A (cigarette lighter style)|
|Fuel tank||4 gal|
|Approx. dimensions (L x W x H)||23.3 x 18.7 x 19.3 in|
|Noise (lower limit)||72 dBA|
|Security||Low oil and overload protection|
|Neutral||Bonded to frame|
Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.
Predator portable generators are solely distributed by the Harbor Freight Corporation, which has an impressive list of over 200 trademarked products. The Predator brand is one of their newer lines of outdoor power products. As with many other makes and models of power equipment sold by Harbor Freight, Predator generators are manufactured in China.
The Predator 4375 is covered under a warranty for up to 90 days. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of Predator generators, please consult Predator's warranty policies stated in the user manual (opens in a new tab). Alternatively, you can also contact their Customer Support : 1-800-444-3353.
Questions & Answers
What can it power?
|Item||Running Watts||Starting Watts|
|At home||Electric fry pan||1500||1500|
|Sump pump (1/2 hp)||1050||2150|
|Refrigerator (energy star)||192||1192|
|Set of 5 LED light bulbs||55||55|
|Total||2797 W||3897 W|
|For camping||RV AC (11,000 BTU)||1010||1600|
|Electric fry pan||1500||1500|
|Total||2790 W||3380 W|
|Total||2740 W||3840 W|
Is there a drain plug for gas on the generator for long term storage? (Asked April 29, 2020)
It doesn't seem that there are any. I'd suggest to contact Harbor Freight to make sure.
Does this generator have an inverter? (Asked June 10, 2020)
This unit is not an inverter generator.
how do i change the oil (Asked August 21, 2020)
Oil change procedure is detailed page 17 of the owner's manual (opens in a new tab).
What spark should I use and what is the gap setting (Asked August 23, 2020)
Spark plug type is NHSP/Torch F6TC. Gap setting is 0.027" – 0.031".
What kind of oil (Asked August 28, 2020)
Recommended engine oil is SAE 10W – 30 above 32° F, and SAE 5W – 30 at 32° F or below
What grade of gas? (Asked September 08, 2020)
Recommended gas is 87 octane or higher unleaded gasoline that has been treated with a fuel stabilizer additive.
Do you have to ground this generator predator 4375 (Asked September 08, 2020)
It is always safer to ground your generator.
Can I connect my RV 30 amp cord into the 120/240V 30A (L14-30R) receptacle? The panel says 15A max??? (Asked October 10, 2020)
You absolutely can. You just won't pull more than 15A amps out of it.
Can the 4375 be connected directly to the my homes' main panel box? (Asked October 17, 2020)
It can be connected to a transfer switch. Note that this connection should be made by a licensed electrician.
How much oil does the Predator 4375 hold? I cannot find that info anywhere. (Asked November 01, 2020)
Engine oil capacity is 0.6 quarts.
Does this model have carbon monoxide that automatically shuts off if level gets too high? If machine is placed 30ft from home with "exhaust" pointed away from home safe enough?can strong wind blow CO back to home at a dangerous level? As home health nurse,I had 2 patients,separate cases I had send to morgue,so I know danger! (Asked December 27, 2020)
Can the generator be ran in snowy conditions (Asked February 15, 2021)
Please refer to our article on operating a generator in bad weather.
My question concerns the 240 volt outlet total amperage output. It lists here at (1x 120/240V 30A (L14-30R). So I take this to mean 30 amps even though the label painted on the side says 15 amps maximum. 30 amps would make sense as its combining both of the 15 amp 120 volt circuits. The 4375, the 6500, and the Predator 9000 all list identical outputs in the descriptions but on the unit they differ. So just trying to confirm total amp output as I plan on hooking up to the house panel. (Asked February 17, 2021)
It means that the outlet is 30 amps, as per its NEMA nomenclature (L14-30R). For the Predator 4375, this outlet won't output more than 15 amp. 15A x 240V = 3600W.
What are the valve gaps set at (Asked March 09, 2021)
Intake 0.004" – 0.006", Exhaust 0.006" – 0.008"
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