Pentair Diffuser Assembly TR140 | 154906 Pentair Diffuser Assembly TR140 (SKU 154906) restores uniform water distribution in TR140 filters — improves performance and longevity. Features Ensures even water flow across the sand bed OEM-grade fit for TR140 model Durable construction resists chemical exposure Minimizes channeling and protects internals Drop-in replacement to restore filter performance Description The Pentair Diffuser Assembly TR140 (SKU 154906) is a vital internal component for the Triton II TR140 fiberglass sand filter. It directs water evenly into the sand bed, preventing uneven flow paths that degrade filtration. Over time, diffusers may degrade due to pressure, debris, or aging. This genuine OEM diffuser is engineered for durability in challenging pool environments, helping maintain optimal filtration and preserving other filter components from stress. Pro Tip Rinse the diffuser before installation to remove loose particles. Consider replacing the closure O-ring (e.g. Pentair 154493) at the same time to ensure a tight, leak-free seal. Related Parts Pentair O-Ring, Closure | 154493 Pentair Manual Air Relief Assembly | 273564 Installation Tips Always shut off the pump and relieve pressure before opening your filter. Inspect mating surfaces for damage. Use proper O-rings and lubrication where appropriate. Do not over-tighten internal connections.