Cat® Diesel Level Gauges are specifically designed to measure the level of Diesel Exhaust Fluid . They are designed for easy and comfortable use. Cat® Parts are manufactured to precise specifications and are built for durability, reliability, productivity, less environmental impact and reuse.Application:Cat® Diesel Exhaust Fluid Level Measuring Gauges are application specific. Consult your owner's manual or contact your local Cat® Dealer for more information.