Toro Base Light Kit - 4000 Series (144-0389)"In Stock"items ship out by next business day. "Special orders"typically ship out 3 5 days from date of order. You will be contacted via email with longer delays. Toro Base Light Kit 4000 Series Genuine Toro Light Kit (144 0389) Mounts to Toro 4000 Series Z Light Kits illuminate the mowing area during lowlight conditions. This is a popular solution in early spring and fall when light conditions are poor. This accessory mounts to the front of specific