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 ....  $2.49 ea.

Bottom Left: Mixture screw o-ring (4 per bike) for 1976 
     & 1977 KZ900 models (VM26).........
                                                      $3.49 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)  $1.79 ea.

Bottom Right: Mixture screw o-ring for 1977 thru 1979 
       KZ1000 models (4 per bike) ..... $1.09 ea.

In Stock at Redline Cycle 

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

                             $ .99 each

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.........
                                     $5.69 each

In Stock at Redline Cycle