The Waterco Micron SM diffuser is designed for compatible applications where the diffuser component needs replacement to restore proper internal flow behavior. A diffuser is useful because it helps manage the movement and direction of flow inside the assembly, making it an important performance-related part even though it is not always visible from the outside.This replacement is especially useful when the original diffuser is cracked, worn, warped, or no longer fitting properly in the assembly. Restoring the diffuser can help improve the overall feel and completeness of the repair rather than leaving a compromised internal hydraulic part in place.The W02066 is a practical service part when a compatible Waterco Micron SM setup needs its diffuser renewed for more dependable internal performance. Waterco Micron SM diffuser Designed for compatible internal flow-management applications Helps restore proper diffuser fit and function Useful when the original diffuser is cracked or worn Supports a more complete internal rebuild