The Wacker Neuson Radiator Cap is a genuine OEM component designed for LT4Z, LTP4Z, LTW4Z, LTWP4Z, LTW6Z, LT4SZ, and LTP4SZ series light towers. As a direct factory replacement, this cap maintains the correct pressure rating for the cooling system as originally engineered for these machines. It is compatible across a wide range of Wacker Neuson light tower configurations, including both standard and propane-ready variants. If your cooling system is losing pressure, overheating, or showing signs of coolant loss, replacing the radiator cap with the correct OEM part is a straightforward first step.
Key Features
- Correct Pressure Rating for the Cooling System — Genuine OEM construction ensures this cap holds and releases at the exact pressure specification the engine cooling system requires, preventing both over-pressurization and coolant loss.
- Direct OEM Replacement — Engineered to seat and seal on the factory radiator filler neck without modification, matching the original cap in thread pattern, valve geometry, and sealing surface.
- Broad Light Tower Compatibility — Verified fitment across LT4Z, LTP4Z, LTW4Z, LTWP4Z, LTW6Z, LT4SZ, and LTP4SZ series Wacker Neuson light towers.
- Protects the Engine from Heat Damage — A failed or weakened radiator cap allows coolant to escape and system pressure to drop, leading to overheating conditions that can damage cylinder heads, gaskets, and coolant passages.
- Fuel System Safety Relevance — Maintaining a sealed, properly pressurized cooling system on diesel-powered light towers is critical to safe, sustained operation in continuous-duty site lighting applications.
- Genuine Wacker Neuson Part — Sourced directly from Wacker Neuson, part number 5000117504 carries the same traceability and quality assurance as every other factory-supplied component for this equipment line.
The radiator cap seals the cooling system and maintains the correct operating pressure so the coolant can absorb and transfer engine heat effectively. By raising the boiling point of the coolant under pressure, it allows the engine to run at higher temperatures without coolant loss. When the cap's internal pressure valve weakens or the sealing gasket deteriorates, the system loses pressure, coolant escapes through overflow, and the engine becomes vulnerable to overheating — a particularly damaging failure mode in light towers running long overnight shifts at remote sites.
Part Details
| Part Number | 5000117504 |
|---|---|
| Old Part Number | 0117504 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Radiator Cap |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Light Tower | LT4Z | 5000007635, 5000007689, 5000009080, 5000009226 |
| Light Tower | LTP4Z | 5000007636, 5000008063, 5000009227 |
| Light Tower | LTW4Z | 5000008064 |
| Light Tower | LTWP4Z | 5000008065 |
| Light Tower | LTW6Z | 5000008068 |
| Light Tower | LT4SZ | 5000007637 |
| Light Tower | LTP4SZ | 5000007638 |
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.
