The Wacker Neuson Overflow Valve is a genuine OEM component designed for the LTN4Y and LTN5Y series light towers, including LTN4Y, LTN4Y RH, LTN5Y, LTN5Yp, LTN5Yp HD, LTN5Ypk, LTN5Ypa, and related variants. Sourced directly from Wacker Neuson, this overflow valve meets the same exacting standards as the original part installed at the factory, ensuring a direct, trouble-free installation. Keeping your light tower's fuel system operating within its correct pressure range depends on a properly functioning overflow valve — this genuine OEM replacement restores that function with confidence.
Key Features
- Genuine OEM Pressure Calibration — Factory-matched cracking pressure ensures the valve opens and closes at exactly the correct threshold for this fuel system, preventing over-pressurization and fuel starvation.
- Direct Drop-In Installation — Matches the original port size, thread specification, and connection geometry for a straightforward swap with no adaptation needed.
- Broad LTN Series Coverage — Confirmed fitment across LTN4Y, LTN4Y RH, LTN4Y 60 Hz, LTN4Y 120V/60Hz, LTN4Y SA, LTN5Y, LTN5Y CH, LTN5Y UK, LTN5Y SA, LTN5Yp, LTN5Yp HD, LTN5Ypk, and LTN5Ypa light tower models.
- Fuel System Integrity — A correctly functioning overflow valve keeps fuel circuit pressure within the designed operating range, protecting injectors and the fuel pump from excess pressure damage.
- Fuel System Safety — Proper overflow valve operation prevents uncontrolled fuel pressure buildup, reducing the risk of fuel line failure or leaks in the fuel circuit.
An overflow valve regulates pressure within the fuel supply circuit by diverting excess fuel back to the tank when system pressure exceeds the designed limit. This keeps the downstream fuel components — including the injection pump and injectors — operating within their safe pressure range, protecting them from wear and damage. When the overflow valve fails or sticks, symptoms typically include hard starting, rough running, excessive fuel return, or in some cases a complete loss of engine power as the fuel system is unable to maintain stable delivery pressure.
Part Details
| Part Number | 5100075888 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Overflow Valve |
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.
