Forum Discussion

dedmiston's avatar
dedmiston
Moderator
Dec 22, 2022

Feedback on $50 Onan carbs on Amazon?

What's the consensus on the cheap knockoff carbs for Onan 5500 generators? They run in the $45 - $70 range, which is a lot less than $400 for the OEM.

AMAZON LINK

My gen has been giving me a little trouble and I'm thinking about ordering one to keep as a spare in case I need to fix it while we're boondocking.

Yesterday I removed the solenoid jet and cleaned it up because our gen wouldn't start (no fuel). It's purring great now, but I'm a little nervous that my fix might not last forever.

Anybody here have any experience with the knockoff carbs?

26 Replies

  • JaxDad's avatar
    JaxDad
    Explorer III
    dedmiston wrote:
    What's the consensus on the cheap knockoff carbs for Onan 5500 generators? They run in the $45 - $70 range, which is a lot less than $400 for the OEM.


    Anybody here have any experience with the knockoff carbs?


    A neighbour is a retired mechanic, an old school ‘rebuild not replace’ kinda guy. He was an auto mechanic who gave up on stealerships and their ‘throw parts at it’ mentality as he got on in years and went to work for the local rent-all shop that was a huge small engine / chainsaw retail & repair facility. Honda & Stihl dealers.

    I took my small snowblower to him earlier this fall because it wouldn’t idle properly. I was very surprised when he suggested a replacement ’knock-off’ carb for the Kohler engine in it.

    His comment was the carb is $30, a rebuild kit is $50 and there’s $0 labour in rebuild time.

    I asked about quality, his opinion (based on the ones he used) was that they seemed every bit as good as the ‘factory’ items.

    That was good enough for me.
  • So you can buy 8 knockoff carbs for the price of 1 OEM. How long did the original carb last? If the knockoff lasts 1 year; after 8 years are you ahead or behind? If it lasts 2 years? Etc..? A $400 carb that only lasts 4 years certainly wouldn’t be a good value; if it lasted 10 years (without problems) then yes.
    Those are questions only you know the answer to.
  • How old is your generator? The original carb lasted this long.
    Will a new OEM cadb last that long? Maybe.
    Will a cheap replacement carb lasr that long? Maybe.
    Buy one and report back.
  • Cummins12V98 wrote:
    Buck up and buy the real deal.


    I just need that three digit code from the back of your card and I’ll be good to go. :B
  • 2112's avatar
    2112
    Explorer II
    I don't know anything about an Onan knockoff but I've been using a cheap $12 Champion knockoff carb I got from Amazon on my generator for about 4 years now. I tested it yesterday preparing for the Texas grid to collapse tonight. My cheap carb is still working.

About RV Tips & Tricks

Looking for advice before your next adventure? Look no further.25,163 PostsLatest Activity: Sep 06, 2025