The Wacker Neuson Fitting Key is a genuine OEM component designed for the LTN4Y and LTN5Y series light towers, including the LTN4Y, LTN4Y 60 Hz, LTN4Y SA, LTN4Y RH, LTN4Y 120V/60Hz, LTN5Y, LTN5Y SA, LTN5Y CH, LTN5Y UK, LTN5Ya, LTN5Yp, LTN5Yp HD, and LTN5Ypk models. As a direct Wacker Neuson OEM part, the is manufactured to the exact specifications required for proper assembly and secure component engagement in these machines. Sourcing a genuine OEM Fitting Key means you get the correct geometry and tolerancing for a clean, rattle-free fit the first time. Keep this part on hand for scheduled maintenance or field repairs to keep your light tower operating at full capacity.
Key Features
- Exact OEM Geometry — Manufactured to Wacker Neuson's precise dimensional specifications, ensuring the key seats fully and transmits torque without slipping or deforming under load.
- Broad LTN Series Coverage — Fits the full range of LTN4Y and LTN5Y light tower variants, including SA, RH, CH, UK, 60 Hz, 120V/60Hz, HD, pk, and pa configurations.
- Direct Drop-In Installation — Engineered to match the original keyway profile, so installation requires no filing, grinding, or shimming.
- Secure Power Transfer — A correctly fitted key locks the mating shaft and hub in positive alignment, preventing rotational slippage that can cause accelerated wear on connected drive components.
- Genuine Wacker Neuson OEM Part — Sourced directly from the manufacturer, carrying the same part number (5100075841) used in the original build — no guesswork on compatibility.
A fitting key is a small but critical hardware component used to lock a rotating shaft to a hub, gear, pulley, or similar driven part. It sits in a machined slot — called a keyway — cut into both the shaft and the mating component, preventing the two from rotating independently of each other. Without a properly functioning fitting key, torque cannot be reliably transferred between parts, which leads to slippage, vibration, and rapid wear on the shaft and bore surfaces. When a fitting key shears, deforms, or goes missing, the connected assembly will fail to operate correctly and continued use can cause costly secondary damage to surrounding components.
Part Details
| Part Number | 5100075841 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Fitting Key |
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 |
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.
