4.2 LITER. Grommet. MAIN. A rubber ring with a hole in the center which provides protection through which Intercooler pipe related components pass through. A rubber ring with a hole in the center which provides protection through which Intercooler related components pass through. Insulator used on the Engine Cooling Fan Shroud. Damper bushing. Damper grommet. Engine Cooling Fan Shroud Insulator. Intercooler Grommet. Intercooler Pipe Grommet. Mount bracket grommet. Pressure pipe grommet.