The Wacker Neuson Exhaust Valve is a genuine OEM exhaust valve designed for the ML440 Light Tower series and the MG5 Portable Generator series, including MG5d and MG5sd variants. As a direct OEM replacement sourced from Wacker Neuson, this part is manufactured to the exact specifications as the original component installed at the factory. It fits a wide range of ML440 and MG5 configurations, making it the dependable choice when servicing these machines. Confirm your model number against the fitment list before ordering to ensure a correct match.
Key Features
- OEM-Grade Sealing Precision — Manufactured to Wacker Neuson's exact dimensional and metallurgical specs, ensuring the valve seats and seals correctly against the cylinder head for optimal combustion efficiency.
- Drop-In Engine Replacement — Engineered to install directly in place of the original exhaust valve with no reworking of valve seats or guides required under normal service conditions.
- Broad ML440 and MG5 Series Fitment — Covers multiple ML440 Light Tower configurations and a wide range of MG5, MG5d, and MG5sd Portable Generator models, consolidating your parts sourcing across the lineup.
- Sustained Engine Output — A correctly functioning exhaust valve ensures spent combustion gases are fully expelled each cycle; a worn or burned valve causes compression loss, rough running, and power drop on your generator or light tower.
- Emissions and Combustion Compliance — Proper exhaust valve function is critical to maintaining correct exhaust flow and combustion timing; an OEM part helps keep the engine operating within its designed emissions and performance parameters.
The exhaust valve is a critical engine component that opens at the end of each combustion cycle to release burnt gases from the cylinder before the next intake stroke begins. When the valve seals correctly against its seat, the engine maintains proper compression and burns fuel efficiently — directly affecting the power output of your generator or light tower. A valve that is worn, burned, or no longer seating properly will cause a loss of compression, increased fuel consumption, misfiring, and eventually prevent the engine from running altogether.
Part Details
| Part Number | 5000404155 |
|---|---|
| Old Part Number | 0404155 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Exhaust Valve |
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 |
| Portable Generators | MG5sd | 5000630202, 5000630214, 5000630236 |
| 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.
