The Wacker Neuson Valve Rocker is a genuine OEM component designed for the MG5 portable generator, MDP3 trash pump, MPU 29 reversible plate, and ML440 light tower series. As a direct OEM replacement sourced through authorized Wacker Neuson channels, part meets the original engineering specifications for the engines found across this broad family of equipment. This valve rocker fits an extensive range of configurations within these product lines, making it a go-to service part for fleet operators and service technicians managing multiple Wacker Neuson machines.
Key Features
- Genuine OEM Valve Geometry — Manufactured to the exact rocker arm geometry and pivot tolerances specified for Wacker Neuson small engines, ensuring correct valve lift and timing are maintained.
- Drop-In Engine Replacement — Mounts directly to the original rocker pivot post with no rework; restores the valve train to its original operating clearance without shimming or adjustment beyond standard valve lash setup.
- Wide Cross-Series Compatibility — A single part number covers MG5 portable generators, MDP3 trash pumps, MPU 29 reversible plates, and ML440 light towers, simplifying parts inventory for mixed Wacker Neuson fleets.
- Sustained Engine Breathing Efficiency — A correctly functioning valve rocker opens and closes intake and exhaust valves at the right moment; a worn or cracked rocker causes misfires, power loss, and excessive fuel consumption.
- Fuel System Safety Relevance — Proper valve train operation is critical on generator and pump engines where unburned fuel from a misfiring cylinder can create a fire or carbon buildup hazard; using a genuine OEM rocker maintains correct combustion chamber sealing.
A valve rocker — also called a rocker arm — transfers motion from the camshaft (via the pushrod on overhead-valve engines) to the intake and exhaust valves, pushing them open at precisely the right point in the engine's firing cycle. When the rocker arm wears at its contact pad or develops a crack at the pivot bore, valve lift becomes inconsistent, leading to rough running, hard starting, and eventually valve damage or engine overheating. Replacing a worn rocker arm promptly with a genuine OEM part like the Wacker Neuson 5000404165 restores proper combustion timing and protects the rest of the valve train from secondary wear.
Part Details
| Part Number | 5000404165 |
|---|---|
| Old Part Number | 0404165 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Valve Rocker |
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, 5000630334 |
| Trash Pumps | MDP3 | 5000630140, 5000630144, 5000630176, 5000630177 |
| Reversible Plates | MPU 29 | 5000630141, 5000630228 |
| 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.
