DENSOs accumulators and receiver-driers also contain powerful desiccant packages to isolate harmful moisture from the system, protecting the internal components from corrosion, which can wear systems prematurely from the inside out and create costly leaks. When major A/C service is performed, replacement of the accumulator or receiver-drier is often recommended by leading service authorities. Like all its First Time Fit components, DENSOs accumulators and receiver-driers are manufactured to the most stringent factory standards to provide new-car performance and efficiency.