K-Series Classification

by Engine Number

Trying to figure out which series engine you have? 

Here's an excellent chart which details the classification of K0 through K8. Now you know!

Model

Engine

Frame

CB750

1000001~

1000001~

CB750 K1

1044806~

1044650~

CB750 K2

2000001~

2000001~

CB750 K3

2200001~

2200001~

CB750 K4

2300001~

2300001~

CB750 K5

2372115~

2500001~

CB750 K6

 

 

     US

2428762 - 2465510

2540001 - 2575894

     Canada

2428762 - 2465992

2540001 - 2576394

     European Direct

2438827 - 2475324

2556099 - 2584973

     France

2438827 - 2474663

2555545 - 2584393

     Germany

2438827 - 2476626

2550437 - 2586393

     England

2438827 - 2475216

2573735 - 2584843

     General Export KPH

2438827 - 2476422

2573735 - 2584843

     Australia

2438827 - 2476604

2578674 - 2586269

CB750 K7

 

 

    US

2700009 - 2729740

2700009 - 2729532

     Canada

2709652 - 2728188

2709636 - 2728111

     General Export KPH

2720001 - 2740319

2719942 - 2739004

     General Export MPH

2732065 - 2732824

2731270 - 2732029

     England

2719995 - 2736452

2719935 - 2735472

     European Direct

2720004 - 2740102

2719941 - 2738818

     France

2719999 - 2738337

2719939 - 2737053

     Germany

2719997 - 2737988

2719937 - 2736904

     Australia

2720003 - 2740319

2719944 - 2739038

CB750 K8

 

 

     USA

3000001 - 3062980

2800001 - 2862980

     Canada

3001934 - 3061938

2801946 - 2861935

Source: www.sohc4.org

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