The Wacker Neuson Volute Insert Kit is a genuine OEM component designed for the PT3 series 75mm/3-inch centrifugal trash pumps, including the PT3Y, PT3A, PTK3, and PT3B models. As a direct OEM part, the is manufactured to the same specifications as the original, ensuring a correct fit within the pump housing without guesswork or improvisation. Keeping the volute insert in good condition is critical to maintaining pump output pressure and flow efficiency on the jobsite. Verify your model number before ordering to confirm this kit is the right match for your machine.
Key Features
- Genuine OEM Construction: — Engineered to original hydraulic tolerances, so the insert seats correctly within the volute housing and maintains the fluid dynamics the pump was designed around.
- Kit Format for Complete Service: — Supplied as a complete insert kit, giving you everything needed to restore the volute cavity in a single service event rather than chasing individual components.
- Confirmed PT3 Series Fitment: — Verified for PT3Y, PT3A, PTK3, and PT3B 75mm/3-inch centrifugal trash pumps — one of Wacker Neuson's most widely used pump platforms on construction and dewatering sites.
- Restored Pump Efficiency: — A worn or damaged volute insert causes pressure drop, reduced flow rate, and increased cavitation risk; replacing it with part 5000076821 restores the pump's rated performance.
- Fuel and Fluid Safety Compliance: — Proper sealing and fit of the volute insert prevents uncontrolled fluid bypass within the pump casing, protecting downstream components and the operator environment.
The volute insert is the shaped inner liner seated inside the pump's volute casing — the spiral-shaped housing that surrounds the impeller. Its geometry is precisely matched to the impeller's sweep, converting the kinetic energy of spinning fluid into pressure that drives water through the discharge line. When the insert wears, erodes from abrasive debris, or becomes damaged, that conversion becomes inefficient: the pump loses head pressure, flow rate drops, and the impeller may begin to cavitate, accelerating wear on surrounding components. Replacing the volute insert kit restores the correct clearances and flow path, bringing the pump back to its designed output capacity.
Part Details
| Part Number | 5000076821 |
|---|---|
| Old Part Number | 0076821 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Volute Insert Kit |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 75mm/3in Centrifugal Trash Pum p | PT3Y | 5000007118 |
| 75mm/3in Centrifugal Trash Pum p | PT3A | 5000006729 |
| 75mm/3in Centrifugal Trash Pum p Kit (without engin | PTK3 | 5000006747 |
| 75mm/3in Centrifugal Trash Pum p | PT3B | 5000006731 |
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.
