The Wacker Neuson Cylinder Head Subassembly is a genuine OEM component designed for ML440 Light Towers, ML440 Multifunction Floodlight Towers, and MG5 Portable Generators — including the MG5d variant. As a direct OEM part, it is manufactured to the same specifications as the original, ensuring a proper fit and correct function in every supported model. This assembly covers a broad range of ML440 and MG5 series machines, making it the go-to replacement for operators running Wacker Neuson light tower and generator equipment.
Key Features
- OEM Combustion Chamber Integrity — Manufactured to original tolerances for correct compression, sealing, and combustion geometry — critical in a cylinder head assembly where even minor deviations affect engine performance.
- Direct Drop-In Replacement — Engineered to match the original mounting surfaces, port alignment, and bolt patterns, allowing straightforward installation without rework or machining.
- Broad ML440 and MG5 Series Coverage — Fits multiple ML440 Light Tower and Multifunction Floodlight Tower configurations, as well as a wide range of MG5 and MG5d Portable Generator models.
- Sustained Engine Output — A correctly seated cylinder head maintains proper compression ratios, protecting fuel efficiency and power output — a worn or damaged head leads to compression loss, hard starting, and reduced runtime.
- Fuel System and Emissions Safety — A properly sealed cylinder head prevents combustion gas blow-by and uncontrolled fuel vapor migration, supporting safe operation of generator and light tower applications in occupied or enclosed work environments.
The cylinder head subassembly forms the upper closure of the engine's combustion chamber, housing the valves, valve seats, and coolant or air passages that regulate temperature and gas flow during each combustion cycle. It works in conjunction with the head gasket and cylinder block to maintain the compression needed for reliable ignition and consistent power delivery. When the cylinder head is cracked, warped, or worn, the engine loses compression, runs roughly, overheats, or fails to start — making timely replacement essential to keeping the machine operational.
Part Details
| Part Number | 5000404114 |
|---|---|
| Old Part Number | 0404114 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Cylinder Head Subassembly |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Light Towers | ML440 | 5000630117, 5000630204, 5000630325 |
| Portable Generators | MG5 | 5000630137, 5000630143, 5000630224, 5000630229, 5000630233, 5000630237, 5000630239 |
| 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.
Wacker Neuson
Wacker Neuson 5000404116 Cylinder Head Cover Subassembly
