A4 A2 Airbox differences

[PAULJAC47]

Guyz have two airboxes main bodies one off an a4 one is off a thou a2 i know the silencers are very diff but the main bodies look identical to me though part numbers are diff,is there any differences or do i have two a4 boxes or two a2 boxes? Cheers Paul J

[needaz1100r]

Paul,

I'll stand to be corrected, but after a lot of research on part numbers and pictures I think the A1/A2/A3/A4, LTD B1-B4 and Z1-R air boxes are interchangeable.

There will be lots of opinions, but unless it's someone who has the different models stripped side by side, I'd go with the logic that the frames and engines were so similar, why would the big K change the airboxes?

The big part number difference was when the mesh filter over the airbox to carb rubbers was changed, but parts lists give both types for some of the models so I can't tell when.

[ADRIAN H]

Z1R and Mark II have square corners, to suit side panels.

[Z1RII]

Z900A4 body where the filter sits in is higher round about 1,5-2 cm and does not fit in 1000 frame without modifying

greez
amir

[PAULJAC47]

Thanks Guyz sorted!

[needaz1100r]

OK - I've become an anorak, don't read on unless you have drunk copious amounts of coffee or have a £10 wrap of whizz to hand...

Main airbox, part number - 11011-1025

Fits Z1000 A1/A2, all good.

Also listed for B1/B2, which has the same part number side panels as the A1/A2, no surprise, still good.

BUT also listed for Z1000D1 (Z1-R), which has MK2 style side panels, confusing.

THEN

Main airbox part number - 11011-1012 (did say 1016 - poor memory, sorry).

Fits Z1000A3/A4, ie the MK2, so I assumed different shape, that's logical.

BUT

Also listed for B3/B4, which has the same part number side panels as the A1/A2, now really confused.

AND

for the Z1000D3 Z1-R, which has exactly the same bodywork as the D1.

I can only surmise that Kawasaki made the side panels for the Z1-R and the MK2 to fit the airbox and not the other way round or those part numbers cannot be correct. There are no other part numbers for MK2 or Z1-R, or 1977-1980 Z1000 airboxes that I can find.

You only need look at that white Z1000 that was for sale the other day to see how bulbous the Z1000 side panels are at the back to go round the airbox at the front, which the MK2/Z1-R don't being nearly flat.

I have a Z1-R airbox and it follows the contours of my Z1000 side panels although I haven't got round to fitting it in the frame yet.

Z900 is different and I have not researched.

[Steve Cooke]

Z1R/Mk2 airbox will fit into A1/A2 fairly comfortably and don't look too much out of place, The A4 airbox is quite different in a number of ways from the A1/A2 airbag.

[PAULJAC47]

Could you outline the differences on the main airbox body apart from ones already pointed out please?

[Steve Cooke]

I Haven't got an A1/A2 box here at the moment but from memory the indentations/corner chamfers for the frame differ, the recess for the support stay is a different depth and as already said the air filter compartments are a different height also The A4 airbox cap has two sets of locating pegs for the breather pipes as opposed to one for the A1/A2.

[PAULJAC47]

THXS

[needaz1100r]

THXS

Paul, I had to read the thread again, Steve is talking about a 900A4, not a 1000A4, i.e. Mk2, which you thought you may have.

As I said I haven't investigated the 900 airboxes at all.

[london calling]

I've got a couple of air boxes and not sure if Z900A4 or Z1000A1/A2

Do the air boxes have parts numbers on them ?

The 2 lids are stamped : KHI DGM 30386 S & KHI DGM 31311 S

Does anyone have any photos of a Z900A4 air box ?

[PAULJAC47]

Jack ,they are very similar and both will fit a4 and thou,if you put a thou one on a 4 its a bit of a game to fit the snorkel suggesting it slightly less tall,the a4 air box should have two clips for the carb breathers..Paul J

[london calling]

Paul,do you mean the 2 clips on the air box lid ??

[PAULJAC47]

Yes clips that the breathers from the carbs are held by.