The Wacker Neuson 5200019869 is a genuine OEM Flywheel Housing designed for the APT4S and APT4T series self-priming pumps. As a direct factory replacement, this part is manufactured to the same specifications as the original component installed at the factory, ensuring proper alignment and fit within the pump's engine assembly. Compatible across multiple APT4 configurations including Surge Brake, Electric Brake, Cold Weather, and Skid-mounted variants, this housing covers a broad range of APT4 series deployments. Keep this part number on hand for planned maintenance or unscheduled repairs to minimize your machine's time out of service.
Key Features
- Genuine OEM Structural Integrity — Manufactured to original tolerances, ensuring the housing properly encloses and supports the flywheel without stress concentrations or misalignment that could damage rotating components.
- Drop-In Engine Bay Fit — Matches the original bolt pattern and mounting geometry of the APT4S and APT4T pump engines for straightforward installation without rework.
- Broad APT4 Series Coverage — Fits APT4S w/Skid, APT4T Surge Brake, APT4T Electric Brake, and all corresponding Cold Weather variants across the APT4 pump family.
- Protects Critical Rotating Components — A properly sealed flywheel housing shields the flywheel and adjacent drivetrain parts from debris and moisture ingress; a cracked or damaged housing puts those components at immediate risk.
- Verified Wacker Neuson Part Number — Sourced directly through the Wacker Neuson parts network under part number 5200019869, eliminating guesswork when ordering.
The flywheel housing is a structural enclosure that surrounds the flywheel at the rear of the engine, providing a protected interface between the engine block and the pump's drive components. It maintains precise alignment between the crankshaft and the driven assembly, which is essential for smooth, vibration-free pump operation. When the housing is cracked, warped, or broken, misalignment can accelerate wear on the flywheel, starter ring gear, and shaft seals, eventually leading to more extensive drivetrain damage if left unaddressed.
Part Details
| Part Number | 5200019869 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Flywheel Housing |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT4S Pump w/Skid | APT4S | 5200018977 |
| APT4T Pump, Electric Brake, Cold Weather | APT4T CW | 5200019793, 5200019792 |
| APT4T Pump, Surge Brake | APT4T | 5200019643, 5200019644 |
| APT4S Pump w/Skid, Cold Weather | APT4S CW | 5200019798 |
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.
