Topic: Airbox

[kakon864]

Hello,

I am missing the airbox for my 77' cb550k and was wondering if I should try to acquire an original one or go with an aftermarket option? What are good aftermarket air filters?

[Bankerdanny]

I would recommend trying to find an original. They aren't that hard to come by as a lot of people remove them for café and brat bikes. Just make sure that you get a box for 77 or 78 550K, the boxes for the earlier K models and any F model won't fit because the 77-78 550K uses different carbs than all the other 550's.

It is possible that an earlier airbox setup will work if you replace the box-to-carb rubber with the correct ones for your year.

[TwoTired]

This is what you will need to restore.  However, the 77 K model used a similar air horn over the filter box, as in the second pic, instead of the tray/cover shown in he first.

There aren't any aftermarket options that won't require rejetting the carbs.

Cheers,

[kakon864]

All I could find for complete air boxes is a 77' F model one for $100 on ebay, but looks like it would fit if I change the boots. I will also try asking in the wanted section of the forums.

[bryanj]

No it wont.

[kakon864]

Hmm. Glad I asked.

[Scott S]

No it wont.

 Why not? The only difference is the carb to plenum boots. It should work just fine.

[Johnie]

List an ad in the "wanted" section of this board.

[CBDee]

See Sohron's "cb550 assembly manual" in the maintenance section for more information.