Honda-SOHC

Other Stuff => Desperately Seeking!! => Topic started by: David_N on August 06, 2025, 03:02:26 PM

Title: CB550 k 1978 parts wanted
Post by: David_N on August 06, 2025, 03:02:26 PM
Does anyone have to sell or can help me find the top part of the airbox for a CB550?
[attachimg=1]
Title: Re: CB550 k4 parts wanted
Post by: Bryanj on August 06, 2025, 05:17:56 PM
Same as 550 K3 but not easy to find, also cb500k3 ineu
Title: Re: CB550 k4 parts wanted
Post by: David_N on August 06, 2025, 05:26:57 PM
I'd have thought someone could 3d print one
Title: Re: CB550 k4 parts wanted
Post by: SteveW on August 06, 2025, 05:48:03 PM
Would the earlier K0 fit instead? The lower part of the airbox looks the same.
Title: Re: CB550 k4 parts wanted
Post by: David_N on August 06, 2025, 05:51:03 PM
I think it should but I'm not certain
Title: Re: CB550 k4 parts wanted
Post by: Bryanj on August 06, 2025, 06:27:03 PM
It will BUT the pd carbs on the k3/4 are a very different beast and the extra easy air flow may upset them
Title: Re: CB550 k4 parts wanted
Post by: SteveW on August 06, 2025, 06:46:55 PM
I’ve always wondered where do these covers go?
They seem to be as rare as hens teeth, most of the bikes on eBay etc have them missing.
It’s not like they can easily fall off when riding.
Title: Re: CB550 k4 parts wanted
Post by: Seabeowner on August 06, 2025, 06:59:55 PM
Stepped seat only on the 78.
They are difficult parts to find. Same on my US 550F as well. And if you are looking for originality the two M6 captive nut assemblies are impossible to find, but ordinary wing nuts will do.
The air duct bit is listed on ebay for silly money and the complete bits for a staggering £145 + postage from Germany.
Title: Re: CB550 k4 parts wanted
Post by: Gromitdog on August 07, 2025, 09:14:10 AM
Hi Dave N
Here is a link to the part you maybe looking for not cheap though

https://www.ebay.co.uk/itm/167685192946?_skw=honda+cb550+air+filter+top&itmmeta=01K21SAPFKT77MDVJNE1VPGGV6&hash=item270ad0fcf2:g:gx8AAeSwdwFoi-oD&itmprp=enc%3AAQAKAAAA4FkggFvd1GGDu0w3yXCmi1d%2FHQkQzfxryRfoQn8flBSTLxCMBWxOeAG4z%2FG0%2BhfHl07yKtc7gxdBlgord9Ia4iOdH1tNDtOhCUz30%2FUVksrgT610Xd7pkdgclU1n8ThQQHMcUlSbzZl%2Fx6fpozdyn6lPySh%2B%2F8q5m2UMBU362eqXzhZID89CKxAYSxpCMWLCbj3K%2BsisHvgQD9tjSORbh95%2F%2BfVW2XTGsDGHZrS7%2Bizo2YEg4yMU83Srhe536gaCxO%2FN5xCGRyEWtTCsOgTk8rAQ5WHp9fmGHjPnkHmmtPUD%7Ctkp%3ABk9SR4DoqrmQZg

I waited ages for one for mine its just a matter of keep looking Good Luck !

Nige
Title: Re: CB550 k4 parts wanted
Post by: David_N on August 07, 2025, 09:31:45 AM
Many thanks for your reply I really do appreciate it.

I'd seen that part & put it in my watched items folder, it needs the plates to mount it to the airbox which I'm looking for as well.

If it had the other bit with it I'd buy it in a heartbeat
Title: Re: CB550 k4 parts wanted
Post by: Gromitdog on August 07, 2025, 09:58:47 AM
Hi David N

Sin city spares on eBay have just started breaking a 550 Honda in the last couple of weeks they have the brackets that you require these are quite hard to find and not a bad price for them.
I have found a eBay source that does something very close to the Honda spacers that they use on the bike
 
https://www.ebay.co.uk/itm/284388626643?var=585921939067

They do different diameters and lengths and they are half the cost .



Title: Re: CB550 k4 parts wanted
Post by: David_N on August 07, 2025, 10:03:54 AM
Can you post me a link to sin city spares please I'm not having any luck finding them.
Title: Re: CB550 k4 parts wanted
Post by: Gromitdog on August 07, 2025, 10:14:41 AM
Hi David
I have sent you a personal message with the link 👍
Title: Re: CB550 k4 parts wanted
Post by: mickwinf on August 07, 2025, 04:15:36 PM
I have the metal part with no rubber bit and might have some brackets but would have to search
Title: Re: CB550 k4 parts wanted
Post by: David_N on August 07, 2025, 04:21:39 PM
The metal part would be a start & the 2 special wing nuts if you have them would be a great start. Just got to hunt down the rubber snorkel then.
Title: Re: CB550 k 1978 parts wanted
Post by: Johnny4428 on August 10, 2025, 10:36:11 AM
Two of that wing nuts for top of air box showing on CMS web page. (just two in stock)
Title: Re: CB550 k 1978 parts wanted
Post by: mickwinf on August 10, 2025, 11:36:33 AM
Looking at the photo it looks like you are missing the two brackets with the bolts to hold the top on I had a quick look in garage and have a airbox with the two brackets and the metal top bit. Would sell as an assembly, just the filter part.
Title: Re: CB550 k 1978 parts wanted
Post by: David_N on August 10, 2025, 04:53:39 PM
I've bought the mounting bolt assembly just need the top snorkel bit now Mick. Send me a pm with a pic of what you've got please mate.
Title: Re: CB550 k 1978 parts wanted
Post by: Gromitdog on August 18, 2025, 08:53:36 AM
Hi David
I had a good look round the garage and the attic and I can't find the metal top plate part your looking for sorry If I do come across it I let you know
Nige
Title: Re: CB550 k 1978 parts wanted
Post by: David_N on August 18, 2025, 09:02:03 AM
Many thanks Nige 👍