The Wacker Neuson 5200020184 is a genuine OEM O-Ring designed for the LTN4Y and LTN5Y series light towers and APT4S and APT4T series pump trailers. As a direct factory replacement, this O-Ring is manufactured to the same specifications as the original part installed at the factory, ensuring a correct seal in the application it was built for. Fitment spans a wide range of LTN4Y and LTN5Y light tower configurations — including 60Hz, 120V/60Hz, SA, RH, UK, HD, and pk variants — as well as APT4S and APT4T pump trailer models in standard and cold-weather configurations. Confirming part number 5200020184 against your machine's serial number before ordering is always recommended.
Key Features
- Genuine OEM Sealing Integrity — Manufactured to exact material and dimensional tolerances required for a leak-free seal in Wacker Neuson light tower and pump trailer hydraulic and fluid systems.
- Drop-In Replacement — Engineered to seat correctly in the original groove geometry, eliminating the guesswork of sourcing an equivalent aftermarket profile.
- Broad LTN Series Fitment — Compatible with LTN4Y and LTN5Y light tower variants including SA, RH, UK, HD, 60Hz, 120V/60Hz, pk, and pa configurations.
- APT Pump Trailer Coverage — Also fits APT4S and APT4T pump trailers in standard, surge brake, electric brake, and cold-weather versions.
- Prevents Fluid and Pressure Loss — A correctly seated O-Ring maintains system pressure and prevents fluid migration; a failed or degraded O-Ring can result in leaks that compromise machine performance and create hazardous conditions around fuel or hydraulic fluid.
An O-Ring is a circular elastomeric seal that sits within a machined groove between two mating components, creating a pressure-tight barrier against fluid or gas leakage. In light towers and pump trailers, O-Rings are used throughout fuel, hydraulic, and coolant circuits to keep systems operating at the correct pressure. When an O-Ring hardens, cracks, or deforms over time, it can no longer maintain a proper seal — leading to fluid leaks, pressure loss, and potential damage to surrounding components. Replacing a worn O-Ring promptly with the correct part restores system integrity and prevents more costly repairs down the line.
Part Details
| Part Number | 5200020184 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | O-Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| LTN5Ypa | LTN5Ypa | 5100069551 |
| LTN5Yp | LTN5Yp | 5100069549 |
| LTN5Y CH | LTN5Y CH | 5100069552 |
| LTN5Y SA | LTN5Y SA | 5100069548 |
| LTN4Y | LTN4Y | 5100073603 |
| LTN4Y SA | LTN4Y SA | 5100069547 |
| LTN5Ypk | LTN5Ypk | 5100077880 |
| LTN4Y | LTN4Y ME | 5100069545 |
| LTN4Y 60 Hz | LTN4Y 60Hz | 5100069546 |
| LTN4Y 120V/60Hz | LTN4Y 120V/60Hz | 5100075978 |
| LTN5Yp HD | LTN5Yp HD | 5100079429 |
| LTN4Y RH | LTN4Y RH | 5100077620 |
| LTN5Y UK | LTN5Y UK | 5100069553 |
| LTN5Y | LTN5Y | 5100069550 |
| APT4S Pump w/Skid, Cold Weather | APT4S CW | 5200019798 |
| APT4T Pump, Electric Brake, Cold Weather | APT4T CW | 5200019793, 5200019792 |
| APT4T Pump, Surge Brake | APT4T | 5200019643, 5200019644 |
| APT4S Pump w/Skid | APT4S | 5200018977 |
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.
