Feature●Corrosion-resistant, heavy-gauge metal to assure long service life and accurate pressure control●Covers a wide range of pressures●Designed and manufactured to OE standards●Gates Heavy-Duty Radiator Caps are for use on heavy-duty trucks, buses and tractors and fits applications with 3/4 in. deep filler necks.Description Gates Heavy-Duty Radiator Caps are for use on heavy-duty trucks, buses and tractors and fits applications with 3/4 in. deep filler necks.