The Wacker Neuson Spark Plug is a genuine OEM Spark Plug designed for a wide range of Wacker Neuson equipment, including the MDP3 Trash Pump, MG3 and MG5 Portable Generators, MFP1.5 and MFP2 Fire Pumps, and the MP15-CE Single Direction Plate. As a factory-sourced component, the is matched to the exact heat range and thread specification required by these engines, ensuring a drop-in fit with no guesswork. Keeping the correct Spark Plug installed is one of the simplest ways to protect engine performance and fuel efficiency across your Wacker Neuson fleet.
Key Features
- Correct Heat Range for These Engines — Engineered to the precise heat rating required by Wacker Neuson small engines, preventing pre-ignition and fouling.
- Genuine OEM Part — Sourced directly from Wacker Neuson, so electrode gap, thread pitch, and reach match the original specification without adjustment.
- Broad Equipment Coverage — A single part number covers MDP3 Trash Pumps, MG3 and MG5 Portable Generators, MFP1.5 and MFP2 Fire Pumps, and MP15-CE Plate Compactors.
- Reliable Cold-Start Performance — A properly gapped, correctly rated Spark Plug ensures consistent ignition across varying load and ambient temperature conditions.
- Fuel System Safety — A worn or incorrectly rated plug can cause misfires that result in raw fuel entering the exhaust — a genuine replacement eliminates that risk on fuel-sensitive pump and generator applications.
- Straightforward Service Interval Part — Sized and packaged for quick replacement during routine maintenance, keeping scheduled service fast and accurate.
A Spark Plug ignites the air-fuel mixture inside the engine cylinder, initiating the combustion stroke that drives the engine. When the plug wears, the electrode gap widens and the firing voltage required increases, leading to hard starting, rough running, increased fuel consumption, and eventually misfires that can cause unburned fuel to pass into the exhaust. On equipment like trash pumps, fire pumps, and portable generators — where reliable engine starting and consistent output are critical — replacing the Spark Plug at the recommended service interval with the correct OEM part keeps combustion clean and engine response sharp.
Part Details
| Part Number | 5000406842 |
|---|---|
| Old Part Number | 0406842 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Spark Plug |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Single Direction Plates | MP15-CE | 5000630338 |
| Trash Pumps | MDP3 | 5000630140, 5000630144, 5000630176, 5000630177 |
| Fire Pump | MFP1.5 | 5000630258 |
| Fire Pump | MFP2 | 5000630259 |
| Portable Generators | MG5 | 5000630334 |
| Portable Generators | MG3 | 5000630335 |
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.
