Wacker 5000089596 3" Diaphragm | TPE | PDI3A, PDI3, PDT3A, PDT3

The Wacker Neuson 5000089596 TPE Diaphragm is a genuine OEM component designed for the 75mm/3in diaphragm trash pump series, including PDT3, PDT3A, PDI3, and PDI3A models. As a direct OEM part, the part is manufactured to the same material and dimensional standards as the original, ensuring proper sealing and pumping action across all compatible units. This diaphragm fits both standard and inline pump configurations within the PDT3 and PDI3 families, making it a reliable choice for restoring your pump to full working order.

Key Features

• TPE Material Construction — Thermoplastic elastomer delivers the flexibility and chemical resistance needed to withstand continuous contact with water, slurry, and trash-laden fluids in demanding pump environments.
• Genuine OEM Replacement — Sourced directly from Wacker Neuson, this diaphragm meets the exact material grade and dimensional specifications of the original part for correct function within the pump housing.
• Broad PDT3 and PDI3 Series Compatibility — Fits multiple 75mm/3in diaphragm trash pump configurations across the PDT3, PDT3A, PDI3, and PDI3A model families, covering both standard and inline pump variants.
• Restores Full Pumping Pressure — A worn or cracked diaphragm causes loss of prime, reduced flow, and eventual pump failure; replacing it with the correct OEM part brings output back to rated capacity.
• Drop-In Installation — This part is designed to seat and seal within the existing diaphragm pump housing without modification, following the standard disassembly and reassembly procedure for this pump family.

The diaphragm is the core pumping element in a diaphragm-style trash pump. As it flexes back and forth — driven by the pump mechanism — it draws fluid through the inlet valve and forces it out through the discharge, moving solids-laden water without direct contact between the fluid and the drive components. When the diaphragm develops cracks, pinholes, or loses its elasticity, the pump loses prime, flow drops sharply, and fluid can migrate into the drive housing, causing further damage. Replacing a worn diaphragm promptly is one of the most cost-effective ways to restore a diaphragm pump to full service.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.