Oil Adjust Dome Assembly, Red, For Use With Grainger Item Number 4ZL58, 4ZL60, 4ZL62, 4ZL68, 4ZL69, 4ZL70, 4ZL71, 4ZL78, 4ZL79, 4ZL80, 4ZL81, 4ZL82, 4ZL83, 4ZL90, 4ZL91, 4ZL92, 4ZL93, 4ZL94, 4ZL95, Fits Brand Speedaire