The Wacker Neuson Head Subassembly, Cylinder is a genuine OEM component designed for ML440 Light Towers, ML440 Multifunction Floodlight Towers, and MG5 Portable Generators. As a factory-sourced assembly, is built to the exact tolerances required by Wacker Neuson for proper combustion sealing and engine performance. This subassembly covers a broad range of ML440 and MG5 series configurations, making it the correct choice for technicians servicing these machines in the field or shop. Ordering by the verified part number ensures you receive the right assembly the first time.
Key Features
- OEM Combustion Integrity — Manufactured to Wacker Neuson's exact head geometry and sealing surface specifications, ensuring proper compression and combustion chamber performance in this engine family.
- Direct-Fit Subassembly — Supplied as a complete head subassembly, so it installs as a single unit without requiring additional sub-component sourcing or pre-assembly work.
- Broad ML440 and MG5 Coverage — Confirmed fitment across multiple ML440 Light Tower and Multifunction Floodlight Tower configurations, as well as the full range of MG5 and MG5d Portable Generator variants.
- Compression and Output Stability — A correctly seated cylinder head subassembly maintains the compression necessary for consistent engine starts and steady generator or lighting tower output; a worn or warped head leads to misfires, power loss, and coolant or oil contamination.
- Fuel System Safety Compliance — Proper head sealing prevents combustion gas blow-by and uncontrolled fuel vapor migration, keeping the engine operating safely within designed pressure limits.
The cylinder head subassembly sits atop the engine block and seals the combustion chamber, housing the valves and forming the upper boundary where the air-fuel mixture is compressed and ignited. It works in concert with the head gasket and block deck to maintain precise compression ratios — when this assembly warps, cracks, or develops seal failures, the engine loses compression, runs roughly, and can allow oil or combustion gases to escape into unintended areas. Replacing the head subassembly as a complete unit restores combustion integrity and returns the engine to its proper operating condition.
Part Details
| Part Number | 5000407833 |
|---|---|
| Old Part Number | 0407833 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Head Subassembly, Cylinder |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Light Towers | ML440 | 5000630117, 5000630204, 5000630323, 5000630324, 5000630325, 5000630327 |
| Portable Generators | MG5 | 5000630137, 5000630143, 5000630233, 5000630254, 5000630224, 5000630229, 5000630237, 5000630239, 5000630252, 5000630308, 5000630310 |
| MG5 Generator | MG5d | 5000630211 |
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.
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