The Wacker Neuson Plug is a genuine OEM Plug designed for the LTN4Y and LTN5Y light tower series as well as the APT4S and APT4T portable pump series. Sourced directly from Wacker Neuson, this is the same part installed at the factory — ensuring a correct, no-guesswork fit across the full range of compatible machines. Compatible models include LTN4Y, LTN4Y RH, LTN5Y, LTN5Yp, LTN5Ypa, LTN5Ypk, LTN5Yp HD, APT4S, APT4T, and their cold-weather variants. Having the right plug on hand keeps your equipment running safely and avoids unnecessary delays on the job.
Key Features
- Genuine OEM Sealing Integrity — Manufactured to Wacker Neuson's exact material and dimensional spec, so the plug seats and seals the way it was originally designed to — no leaks, no improvised fixes.
- Direct Drop-In Replacement — Matches the original thread pitch, size, and interface of the factory-installed plug, so installation is straightforward with standard tooling.
- Broad Series Compatibility — Fits multiple variants across the LTN4Y and LTN5Y light tower lines and the APT4S and APT4T pump lines, including 60 Hz, 120V, cold-weather, and surge/electric brake configurations.
- Prevents Fluid Loss and Contamination — A correctly functioning plug maintains system closure, preventing fluid escape and protecting internal components from contamination that can accelerate wear.
- Fluid System Safety — A failed or missing plug can result in uncontrolled fluid release, creating both an equipment hazard and a slip risk on site. Using the correct OEM part restores proper containment.
A plug serves as a sealed closure point within a fluid system — whether oil, fuel, or coolant — blocking off a port, drain, or passage that must remain pressure-tight during normal operation. When a plug fails, cracks, strips, or goes missing, the system loses containment, leading to fluid leaks that can starve critical components of lubrication or cause overheating. Replacing a worn or damaged plug promptly with the correct OEM part restores system integrity and prevents what is often a minor maintenance item from becoming a costly repair.
Part Details
| Part Number | 5200020120 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Plug |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| LTN5Yp | LTN5Yp | 5100069549 |
| LTN5Y SA | LTN5Y SA | 5100069548 |
| LTN4Y | LTN4Y ME | 5100069545 |
| LTN4Y 60 Hz | LTN4Y 60Hz | 5100069546 |
| LTN4Y SA | LTN4Y SA | 5100069547 |
| LTN4Y | LTN4Y | 5100073603 |
| LTN5Ypk | LTN5Ypk | 5100077880 |
| LTN4Y RH | LTN4Y RH | 5100077620 |
| LTN5Yp HD | LTN5Yp HD | 5100079429 |
| LTN5Y | LTN5Y | 5100069550 |
| LTN5Ypa | LTN5Ypa | 5100069551 |
| LTN5Y CH | LTN5Y CH | 5100069552 |
| LTN5Y UK | LTN5Y UK | 5100069553 |
| LTN4Y 120V/60Hz | LTN4Y 120V/60Hz | 5100075978 |
| APT4S Pump w/Skid | APT4S | 5200018977 |
| APT4T Pump, Surge Brake | APT4T | 5200019643, 5200019644 |
| APT4T Pump, Surge Brake, Cold Weather | APT4T CW | 5200019792, 5200019793 |
| 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.
