Kohler Courage Upgrade Rocker/Valve Covers

[bruker1]

I have a Kohler Courage that has leaking valve covers. I watched some YouTube videos where they replaced the old covers with composite covers that have an o-ring instead of a gasket. Has anyone here done this and if so where do you get the upgrade kit?

[PhanDad]

1 hour ago, bruker1 said:

if so where do you get the upgrade kit?

Not sure if it's the same, but for the Command, although both the old and new valve covers had o-rings, the older style leaked.  The older ones (with fuel pump and without) were superseded to new Kohler part numbers that had different o-rings and corner bolting.  Comparison pic:

 

The new style is on the right.  

 

[rbstuartjr]

The courage twins, I believe, have composite covers with o-rings. The single might have a  metal valve cover with a gasket.