The Wacker Neuson Reducer Fitting is a genuine OEM component designed for the GP3800, GP5600A, GP6600A portable generator series and PTS4V centrifugal trash pump models. Sourced directly from Wacker Neuson, this fitting carries the same part number and specification as the original installed at the factory. It is compatible across a broad range of EPA and CSA-certified configurations within the GP and PTS4V product families, covering both standard and wheel kit variants. If you are servicing a GP-series generator or a PTS4V trash pump and need a direct, verified replacement, part number is the correct OEM choice.
Key Features
- Genuine OEM Construction — Manufactured to Wacker Neuson's original dimensional and material tolerances, ensuring the fitting seats and seals correctly within the fluid or fuel line circuit.
- Drop-In Replacement — Matches the original threaded interface exactly, connecting to existing lines and fittings without modification to surrounding components.
- Broad Cross-Family Fitment — Verified for GP3800, GP5600A, GP6600A portable generators and PTS4V centrifugal trash pumps across multiple EPA and CSA model configurations.
- Leak-Free Flow Transition — A correctly seated reducer fitting maintains consistent pressure and flow between mismatched line diameters; a cracked or improperly sized fitting can introduce air or fluid leaks that disrupt generator or pump operation.
- Fuel and Fluid System Integrity — On generator and pump platforms, fittings in the fuel or fluid circuit are safety-relevant components; using the correct OEM part helps maintain system integrity and regulatory compliance for EPA and CSA certified units.
A reducer fitting is a threaded or barbed connector that joins two lines or ports of different diameters within a fluid circuit, allowing flow to transition smoothly between sizes without turbulence or pressure loss. On portable generators and self-priming trash pumps, these fittings typically appear in fuel delivery lines, oil circuits, or coolant passages where line diameters change between components. When a reducer fitting cracks, strips, or deteriorates, the result is fluid leakage, air ingestion, or pressure drop — any of which can prevent the engine from starting, cause overheating, or damage downstream components. Replacing a worn fitting promptly with the correct OEM part restores the integrity of the circuit and keeps the machine running as designed.
Part Details
| Part Number | 5000183171 |
|---|---|
| Old Part Number | 0183171 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Reducer Fitting |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Premium Portable Generator | GP5600A | 5000620094, 5000620095, 5000620381, 5000620382, 5000620984, 5000620979, 5000620980 |
| GP6600A GENERATOR,CAN GFI | GP6600A | 5000620100, 5000620101, 5000620384 |
| Premium Portable Generator | GP6600 | 5000620385, 5000620989, 5000620990, 5000620985, 5000620986 |
| PTS4V Pump | PTS4V | 5000620971, 5100031221, 5100058545, 5100058546, 5100060386 |
| PTS4V(I) Pump | PTS4V(I) | 5000620972 |
| GPS5600A Generator, CSA | GPS5600A | 5000620982 |
| GPS6600A Generator, EPA | GPS6600 | 5000620987 |
| GP3800A Generator, EPA w/Wheel Kit | GP3800 | 5000620976, 5000620974, 5000620975, 5100031174 |
| GP5600A Generator, EPA w/Wheel Kit | GP5600 | 5000620983 |
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.
