The Wacker Neuson 5200019867 is a genuine OEM O-Ring designed for the LTN4Y and LTN5Y series light towers and APT4S and APT4T trailer-mounted pump units. As a direct factory replacement, this O-Ring is manufactured to the exact material and dimensional specifications required for a proper seal in these machines. It fits an extensive range of LTN light tower configurations — including standard, 60 Hz, 120V/60 Hz, SA, RH, UK, HD, and cold-weather variants — as well as APT4S and APT4T pump units with surge brake, electric brake, and cold-weather configurations. Confirming the part number 5200019867 against your machine's serial number before ordering ensures you receive the correct seal for your specific unit.
Key Features
- Genuine OEM Material Specification — Manufactured to Wacker Neuson's exact compound and durometer rating for this sealing application, ensuring the ring compresses and seats correctly under operating conditions.
- Drop-In Replacement — Matches the original groove dimensions and cross-section profile, so installation requires no machining or adaptation of the seating surface.
- Broad LTN Series Coverage — Fits LTN4Y and LTN5Y light tower variants including 60 Hz, 120V/60 Hz, SA, RH, UK, HD, and cold-weather configurations.
- APT4S and APT4T Pump Compatibility — Also confirmed for APT4S pump with skid and APT4T pump units in surge brake, electric brake, and cold-weather versions.
- Leak Prevention Starts Here — A degraded or damaged O-Ring leads to fluid or air leaks that compromise system pressure and machine performance; replacing it promptly restores a proper seal.
- Fuel and Fluid System Integrity — In fuel or hydraulic circuit applications, a compromised seal presents a fire or contamination risk; using the correct OEM part maintains the integrity of the sealed joint.
An O-Ring is a circular elastomeric seal that sits in a machined groove and is compressed between two mating surfaces to prevent fluid, fuel, or air from escaping a joint or port. In light towers and pump units, O-Rings are used throughout fuel systems, hydraulic circuits, and fluid connections to maintain pressure and prevent leaks. When an O-Ring ages, cracks, or is damaged during service, it loses its ability to seat correctly — resulting in leaks, pressure loss, or contamination that can affect the performance and safe operation of the machine. Replacing a worn O-Ring with the correct part restores the integrity of the sealed connection and prevents further damage to surrounding components.
Part Details
| Part Number | 5200019867 |
|---|---|
| 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.
