Half of the o-rings you get in those aftermarket rebuild kits are just plain wrong........ Do it the right way.....

Top Left: Choke plunger o-ring (4 per bike) for all 1973 
     thru 1980 900 and 1000 models ....  3.99 ea

Bottom Left: Air mixture screw o-ring (4 per bike):
for all 1976  & 1977 KZ900 models (VM26).........
for 1978 Z1-R models (VM28) 
for 1979 & 1980 models with air screw adjustment(VM28)
                                                    $3.99 ea.

Top Right: Drain plug o-ring (for all 1976 thru 1980 models)
      Is also main jet tube o-ring for 1977 thru 1980 1000 
      models (4 per bike: 76-77 900's) 
                (8 per bike: 77-80 1000's)  $2.99 ea.

Bottom Right: Mixture screw o-ring for 1977 thru 1979 
       KZ1000 models (4 per bike) 2.99 ea.

In Stock at Redline Cycle 

Kawasaki OEM needle and seat sealing washers ........

                             2.99 ea

In Stock at Redline Cycle

For 1979 and 1980 KZ1000 models with accelerator pumps...... 

These o-rings seal the pump nozzle in the carb body.....
If you have a persistent leak at the back of the carb - and know the bowl gasket is good.... These are likely the culprit........

Expensive - But only the OEM ones fit right and do the job......... The aftermarket ones don't work!!
                                   $6.99 each

In Stock at Redline Cycle