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The Cummins Onan P4500I is a gas-powered portable inverter generator featuring a robust 7.3 HP 224cc 4-stroke engine. It delivers 4500 starting watts and 3700 running watts, supports remote start, and includes dual 5V USB ports plus a 30A RV outlet. Designed for RV, camping, and home backup use, it offers parallel capability for expanded power, quiet operation, and up to 18 hours runtime on a 3.4-gallon fuel tank.










| ASIN | B081ZG9VLJ |
| Additional Features | Fuel Efficient, Overload Protection, Portable, Remote Start, Super Quiet |
| Best Sellers Rank | #149,101 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #384 in Outdoor Generators |
| Brand | Cummins |
| Brand Name | Cummins |
| Color | Grey |
| Current Rating | 30.8 A |
| Customer Reviews | 4.5 out of 5 stars 156 Reviews |
| Engine Displacement | 224 cubic centimeters |
| Engine Power Maximum | 7.3 hp |
| Engine Type | 4 Stroke |
| Frequency | 50 hertz |
| Fuel Type | Gasoline |
| Global Trade Identification Number | 00690781007925 |
| Ignition System Type | Electronic |
| Included Components | Generator |
| Item Dimensions L x W x H | 24.5"L x 18.25"W x 20.5"H |
| Item Type Name | Generator |
| Item Weight | 98 pounds |
| Manufacturer | Cummins |
| Manufacturer Part Number | A058U955-P4500I |
| Material Type | Metal |
| Model Name | Onan P4500I |
| Model Number | A058U955 |
| Output Wattage | 3700 |
| Power Source | Gas Powered |
| Recommended Uses For Product | Camping |
| Running Wattage | 3700 watts |
| Runtime | 18 hours |
| Starting Wattage | 4500 watts |
| Tank Volume | 3.4 gallons |
| Total Power Outlets | 3 |
| UPC | 690781007925 |
| Unit Count | 1 Count |
| Voltage | 120 volts |
| Warranty Description | 3 Year |
| Wattage | 3700 watts |
W**K
Quiet running, easy set up
This is a great inverter generator. Came with easy to follow instructions. Need to fill oil (supplied BT manufacturer) need to hook up battery, add fuel. Easy start button, quiet, powers small A/C, excellent for running tools or small RV trailer.
J**S
Updated - Now working good
Initial issues. Resolved. Now working good.
C**L
Super fast shipping
Love this unit, the handle the lite 98 lbs is very manageable. The remote start is a great feature also. It’s very quiet. I now have owned this since Dec. this unit has ran every night when temps drop below 20 degrees. With temps 15 below zero on many nights this started and ran flawless.aThis has been a job saver for me, I can't say enough.
J**A
Tried and true
I bought a Generac non-inverted 8500W EFI model from Costco and it wouldn't start so I returned it. Decided to give the Cummins a try. It's not the latest design, but right out of the box (after adding oil and gas) it started right up. It's so quiet, relatively speaking (it's not going to be the gathering place at your parties) and just purrs along. They don't want you running more than 50% load until it's ran for 5 hours, so I let mine run to that point before hooking it up to my 5th wheel. Turns out my 50A 5th wheel doesn't even use 50%, at least without running AC which I didn't try. My normal hookup is only 30A, so I have no concerns with this generator being able to supply my trailer. In fact, my voltage stays up at 120 while running on the generator, whereas it drops badly when running on the park power. Changing the oil is a bit of a challenge. The body panel that covers the oil area for some reason does not line up with the oil drain plug and it's a very tight space, so it's extremely difficult to get any kind of wrench on it. I just bought a swivel head ratcheting box wrench to hopefully reach it easier in the future. I love the luggage-style handle that lets you move it around easily. I'm in the gravel and on uneven ground, so a 4 wheel setup is a problem. Tilting it up by the handle and rolling it on 2 wheels works very well. I'm very happy with the purchase.
J**E
Amazing generator
My friend purchased one of these several years ago and I had to have one. It’s so quiet it doesn’t affect anyone at our campsite when camping. Starts fist try every time. It’s a work horse for sure!
M**A
Powerful generator, great for RV owners.
Love this thing, travels in the bed of my truck, the remote start is an awesome feature. Plugged into my camper overnight no need to go outside to start on a cold wet morning. Great product. Would highly recommend to other RV owners.
E**C
Very dissatisfied
I bought 2 of these generators with parallel kit. Delivery was great but once I put oil in them and got them started they ran for about 4 hours and then both shut down. Couldn’t get them to start again and after looking into it further 1 is leaking oil and the other not sure what’s going on just won’t start. Called manufacturer and they told me to stop by local dealer for repairs and or replacement. Can’t get me in for 2 weeks to look at them. In the meantime I had to go another generator to use until I can get replacement or refund.
A**R
Heavy equipment
Large generator but great power
Trustpilot
3 weeks ago
2 months ago