Hyway Stihl 064, 066, MS650, MS660 dual port muffler front cover;

Hyway brand dual port muffler cover.More power for your chainsaw.
Fits: Stihl 064, 066, MS650, MS660 chainsaw
Includes spark arrestor screen, gasket, 2 screws
Replaces OEM part: 1122 140 0800