The Wacker Neuson Spark Plug is a genuine OEM component designed for a wide range of Wacker Neuson equipment including MG3 and MG5 portable generators, ML225, ML240, ML425, and ML440 light towers, MFS12 and MFS14 floor saws, MPU 29 and MP15 reversible and single direction plates, MD3.5 modular internal vibrators, and MP70 single direction plates. As a direct factory replacement, this spark plug is sourced from Wacker Neuson and built to the same specification as the part originally installed at the factory. Keeping this part in good condition is one of the most straightforward ways to protect engine performance and starting reliability across your equipment fleet.
Key Features
- OEM Ignition Spec: — Matched to the correct heat range and thread specification for Wacker Neuson small engines, ensuring consistent spark timing and complete combustion.
- Direct Drop-In Installation: — Threads directly into the cylinder head using the same reach and seat type as the original, requiring no adapter or modification to the plug well.
- Broad Equipment Compatibility: — A single part number covering MG3 and MG5 generators, ML-series light towers, MFS floor saws, MPU 29 reversible plates, MP15 and MP70 compaction plates, and MD3.5 internal vibrators.
- Engine Starting and Power Output: — A correctly specified spark plug delivers a strong, consistent spark that supports reliable cold starts, smooth idle, and full rated power output — a worn or fouled plug causes hard starting, misfires, and fuel waste.
- Fuel System Safety Compliance: — Using the correct heat-range plug prevents pre-ignition and detonation, which can damage pistons and combustion chamber components over time.
- Genuine Wacker Neuson Part: — Supplied as an authorized OEM replacement under part number 5000406488, so you can be confident the fit and performance match the original equipment standard.
A spark plug is the component responsible for igniting the air-fuel mixture inside the engine's combustion chamber. Every time the engine fires, the plug produces a high-voltage electrical spark at a precisely timed moment, driving the piston down and generating the power that runs the machine. When a spark plug wears out, becomes fouled with carbon, or operates outside its correct heat range, combustion becomes incomplete or inconsistent — leading to hard starting, rough running, increased fuel consumption, and in severe cases, engine damage. Replacing the plug at the manufacturer's recommended service intervals keeps the engine running cleanly and efficiently.
Part Details
| Part Number | 5000406488 |
|---|---|
| Old Part Number | 0406488 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Spark Plug |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| MP15 | MP15 | 5000630131, 5000630227 |
| Light Towers | ML440 | 5000630117, 5000630204, 5000630323, 5000630324, 5000630325, 5000630327 |
| Light Towers | ML240 | 5000630118, 5000630205, 5000630326 |
| Light Towers | ML425 | 5000630119, 5000630206 |
| Light Towers | ML225 | 5000630120, 5000630207 |
| Modular Internal Vibrators | MD3.5 | 5000630242 |
| Single Direction Plate | MP70 | 5000630243 |
| Portable Generators | MG5 | 5000630137, 5000630143, 5000630233, 5000630254, 5000630224, 5000630229, 5000630237, 5000630239, 5000630252, 5000630308, 5000630310 |
| Reversible Plates | MPU 29 | 5000630141, 5000630228 |
| Floor Saw | MFS14 | 5000630186, 5000630221 |
| Floor Saw | MFSX14 | 5000630246 |
| Portable Generators | MG3 | 5000630142, 5000630135, 5000630256, 5000630225, 5000630230, 5000630234, 5000630238, 5000630240, 5000630253, 5000630309, 5000630311 |
| Floor Saw | MFS12 | 5000630187, 5000630220 |
| Portable Generators | MG3sd | 5000630201, 5000630215, 5000630235 |
| Portable Generators | MG5sd | 5000630202, 5000630214, 5000630236 |
| MG5 Generator | MG5d | 5000630211 |
| MG3 Generator | MG3d | 5000630213 |
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.
