Window vs Non Window Piston in a closed port Cylinder Husqvarna 162 SE 

I had to replace the piston on this old 162 and it wasn't easy finding the right match for the cylinder. I bought a replacement that looked like it might work, but soon found out I needed to match the closed ported cylinder with the open wiindowed piston. In this case, there is a letter designation for an exact match, A, B or C. This is the C version.
• Husqvarna 162 SE Proje...