Topic: 750 Airbox's

[Garage_guy_chris]

Today i got to doing some work on the bike , i hung the airbox in the frame and noticed it says CB750-F. The bike is a 74 750K (K4) do I have the correct airbox for the K model with the stock carbs?

I looked in my stash and found 2 different kinds of airboxes

- CB750-F     which i assume is for K models
- CB750F-F   which i assume is for F models

[ekpent]

For whatever reason they all have that F stamp. K model boxes 76 and older have the wing nuts at the bottom for splitting open.

[evanphi]

For whatever reason they all have that F stamp. K model boxes 76 and older have the wing nuts at the bottom for splitting open.

Just another tick for why my bike is a basket case.

K5 with wingnuts on the airbox.

[ekpent]

For whatever reason they all have that F stamp. K model boxes 76 and older have the wing nuts at the bottom for splitting open.

Just another tick for why my bike is a basket case.

K5 with wingnuts on the airbox.

Wing nuts are correct for a K5.

[goldarrow]

i think bottom of airbox is same for K and F, but top portion is different.  the F has tube on top attach breather hose

[Garage_guy_chris]

Ok sounds good, I figure i should have the correct airbox. one less thing to waste money on....

[evanphi]

For whatever reason they all have that F stamp. K model boxes 76 and older have the wing nuts at the bottom for splitting open.

Just another tick for why my bike is a basket case.

K5 with wingnuts on the airbox.

Wing nuts are correct for a K5.

Just rechecked the fiche. You're right! Rhonda is still a basket case, though.