The Wacker Neuson Washer is a genuine OEM replacement built for the LTN4Y and LTN5Y series light towers and APT4S and APT4T series pump units. Sourced directly from Wacker Neuson, this washer meets the exact material and dimensional standards used in original production, so it installs and seats correctly the first time. Fitment covers a broad range of configurations including cold weather, surge brake, electric brake, and high-power variants across both the light tower and pump families. Keep part number on hand as a standard service item whenever performing maintenance or reassembly on these units.
Key Features
- OEM Material Specification — Manufactured to Wacker Neuson's exact hardness and surface finish tolerances, ensuring consistent load distribution and seating across fastened joints.
- Drop-In Replacement — Matches the original washer's outer diameter, inner bore, and thickness, so it installs directly without any rework to surrounding hardware.
- Broad Model Coverage — Compatible with LTN4Y and LTN5Y light tower variants (including 60Hz, 120V/60Hz, SA, RH, CH, UK, HD, and pk configurations) as well as APT4S and APT4T pump units in standard and cold weather versions.
- Protects Mating Surfaces — A correctly fitted washer distributes clamping force evenly, preventing bolt pull-through, surface deformation, and fastener loosening during vibration-intensive operation.
- Genuine Wacker Neuson Part — Backed by Wacker Neuson's OEM supply chain, this is the same washer specified in the original assembly — not a generic substitute.
A washer serves as a load-spreading interface between a fastener — such as a bolt or nut — and the surface it clamps against. By distributing the clamping force over a wider area, it prevents the fastener from pulling through softer materials, protects finished or machined surfaces from damage, and helps maintain consistent clamping tension during operation. When a washer is missing, deformed, or undersized, fasteners can work loose under vibration or cause localized surface damage that compromises the integrity of the assembly over time.
Part Details
| Part Number | 5200020161 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Washer |
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.
