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Cummins High Altitude Carburetor Kit
Cummins Onan

Cummins High Altitude Carburetor Kit

Part Number: CM46GR
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$32.55
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Taking your generator into higher elevations requires more than extra fuel. This carburetor kit includes altitude-specific jets that help compatible Onan P4500i generators operate more effectively in thinner mountain air. 1-800-940-8924 to order Cummins Onan accessories and parts part number CM46GR or order online at etrailer.com. Free expert support on all Cummins Onan products. Great prices and Fastest Shipping for Cummins High Altitude Carburetor Kit. Accessories and Parts reviews from real customers.
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Cummins Onan Accessories and Parts - CM46GR

  • Generators
  • Carburetor
  • Cummins Onan

Taking your generator into higher elevations requires more than extra fuel. This carburetor kit includes altitude-specific jets that help compatible Onan P4500i generators operate more effectively in thinner mountain air.


Highlights

  • Keeps Your Generator Running at Elevation: High-altitude jets adjust fuel delivery for thinner mountain air.
  • Match the Kit to Your Campsite: Three included jets support elevations from 2,000' to 7,000'.
  • Maintain Generator Performance: Proper jet sizing helps your engine run more efficiently at altitude.
  • Designed for Onan P4500i Models: Built specifically for compatible 224cc portable generators.
  • Everything Needed for Installation: Includes replacement jets and seals for the conversion.
  • No Changes Needed at Lower Elevations: Factory jet remains suitable below 2,000'.

Features to know about

Built for Higher-Elevation Camping

Generator performance can change once you leave lower elevations behind and start climbing into mountain terrain. Thinner air affects the fuel-air mixture inside the engine, which can make a properly running generator feel less responsive. This high-altitude kit helps your compatible Onan generator operate more effectively between 2,000' and 7,000', supporting more reliable performance when your travels take you higher.

Choose the Right Jet for Your Elevation

Not every campsite sits at the same elevation, which is why a single jet isn't always the best solution. This kit includes three carburetor jets designed for different altitude ranges, allowing you to select the appropriate option for where you're camping. Matching the jet to your elevation helps support proper engine operation as conditions change.

Designed Specifically for the Onan P4500i

Finding compatible replacement parts is easier when they're built for a specific generator platform. This kit is designed for compatible Cummins Onan P4500i portable inverter generators equipped with the 224cc engine. Installation components are matched to the application, helping simplify the upgrade process.

Everything Needed for the Conversion

Tracking down small replacement parts can quickly turn a simple project into a frustrating one. Along with four carburetor jets, this kit includes the seals needed for installation. Everything arrives together so you can focus on preparing your generator for higher-elevation use.

Specs

Application:

  • Compatible generator: Cummins Onan P4500i 4,500-watt portable inverter generator
  • Engine size: 224cc

Altitude Compatibility:

  • Overall operating range: 2,000' to 7,000'
    • Jet A: 2,000' to 3,000'
    • Jet B: 3,000' to 6,000'
    • Jet C: 6,000' to 7,000'

Included Components:

  • 3 Carburetor jets
  • Installation seals

Fits:

  • Cummins Onan 4,500-Watt Portable Inverter Generator - Gas - Remote Start (A074Z436)
  • Cummins Onan 4,500-Watt Dual Fuel Portable Inverter Generator w/ Carburetor (A074Z437)


  • A058V024 Cummins Onan P4500 High Altitude Carburetor Kit





    Video of Cummins High Altitude Carburetor Kit
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    Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




    Video Transcript for Review of Cummins Onan Cummins High Altitude Carburetor Kit - CM46GR

    Hi everybody. Andy here with etrailer. Let's take a quick look at this Cummins high altitude carburetor kit. Now this high altitude jet kit is designed specifically for your Cummins Onin P4500i 4500 watt portable inverter generators with the engine size of 224 CC. So this kit is going to help those generators run properly when you are camping or working at higher elevations. As you no doubt know, as altitude increases, the airs are going to become thinner so the engine needs a different fuel mixture to obtain that efficient performance.

    So swapping to the correct jet is going to help prevent the engine from running too rich. That's going to help improve the performance and overall operation while you're up in the mountains. So this kit includes everything that you see here. You're going to get three replacement jets to match the common elevation ranges and I have them listed there for you on your screen. So this is jet A, and you probably can't see it, but I was going to try to show you that there is an A engraved there in that jet.

    So jet A is going to work from 2,000 to 3,000 feet and then jet B I have in the middle and it does have a B engraved on it as well. That's going to be from 3,000 to 6,000 feet. And then Jet C 6,000 to 7,000 feet. And this also comes with the necessary seals for installation. So you're going to basically have everything that you need to make the conversion.

    If you are using the generator below 2,000 feet, no changes are required. The factory installed jet's going to already be sized correctly for those lower elevations. Now if you think you might need some help with installation, take a look at this product page. Typically found underneath the photo section, we have a link that will take you to our installer locator. Click that link, answer the questions that it has for you and that locator will find an installer in your area that etrailer has partnered with to help you with the install.

    Well again, my name's Andy. Thanks for joining me.

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    See what our Experts say about this Cummins Onan Accessories and Parts

    • Onan Generator for High Altitude Use
      Thanks for reaching out Frederick. Like you mentioned, we unfortunately don't carry the Onan P5000iDF EFI generator just yet. The Onan 9,500-Watt Dual Fuel Portable Generator # CM38MR is currently the only portable generator we offer with electronic fuel injection (EFI). It's obviously a much larger generator than the P5000iDF. The closest option we currently carry in terms of features and output is the Onan 4,500-Watt Dual Fuel Portable Inverter Generator # CM86MR. While this model...
      view full answer...

    Info for this part was:

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