CYLINDER ASSY Fits Stihl MS391

45003-LAS CYLINDER ASSY Fits Stihl MS391Key Features: Lasers line of premium Nikasil coated cylinders are engineered and manufactured to provide optimum performance. The coating process employs scatterplot & pore type nanoscale electric ceramic sedimentation, giving firm sedimentary film on the cylinder bore. Evenly distributed micropores on the bore surface improve lubrication, heat dissipation and heat usage. Cylinder blocks are machined from a light-weight aluminum alloy with a heat dissipation performance 42% higher than metal, with the additional benefit of reducing overall engine weight.2 year warrantyExtended engine life. Reduction in fuel consumption up to 15%. 50% reduction in cylinder pollutantsImproved performance with better acceleration. Increase lubrication in cylinder boreReplace Part Numbers: Replaces 1140-020-1204, 11400201204