The Wacker Neuson 5200019861 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 OEM component, it is manufactured to the exact material and dimensional specifications required to maintain a leak-free seal in the application. This O-Ring fits an extensive range of LTN light tower configurations — including standard, 60Hz, 120V/60Hz, RH, HD, SA, UK, CH, and Ypa variants — along with APT4S and APT4T pump trailer models in both standard and cold-weather configurations. Verifying your machine's model number before ordering ensures a correct, confident fit.
Key Features
- OEM Material Grade: — Manufactured to Wacker Neuson's sealing compound specification, ensuring the correct durometer and chemical resistance for this application.
- Drop-In Sealing Fit: — Dimensioned to seat precisely in the original groove geometry, allowing straightforward installation without modification to mating components.
- Broad LTN Series Coverage: — Fits LTN4Y and LTN5Y light towers across multiple regional and electrical configurations, including 60Hz, 120V/60Hz, HD, SA, RH, UK, CH, Ypa, and Ypk variants.
- APT Pump Trailer Compatibility: — Also fits APT4S and APT4T pump trailers in standard and cold-weather builds, covering both surge brake and electric brake configurations.
- Leak Prevention Where It Counts: — A correctly seated O-Ring maintains system integrity and prevents fluid or pressure loss that can lead to operational interruptions or component damage.
An O-Ring is a circular elastomeric seal installed between two mating surfaces or within a groove to prevent the passage of fluid or air under pressure. In light tower and pump trailer applications, O-Rings are used at fluid connections, valve bodies, and other interface points where a consistent, compressed seal is essential to keeping the system operating correctly. When an O-Ring degrades, cracks, or loses its elasticity, the resulting leak can cause pressure loss, fluid contamination, or damage to surrounding components — making timely replacement with a correctly sized, quality seal critical to keeping equipment in service.
Part Details
| Part Number | 5200019861 |
|---|---|
| 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.
