The Wacker Neuson is a genuine OEM Valve Rocker Shaft designed for a wide range of Wacker Neuson equipment, including the MP20 and MP12 Single Direction Plates, GB3000G, GS3500Gi, and G3500G series machines. As a direct OEM component, the is manufactured to the exact tolerances and material specifications required to maintain correct valvetrain geometry and consistent engine operation. This shaft supports the rocker arm assembly across multiple popular Wacker Neuson generator and plate compactor models, making it a versatile stocking part for service technicians and fleet operators. Verify your model number before ordering to confirm compatibility with your specific machine configuration.
Key Features
- Genuine OEM Valvetrain Tolerancing — Manufactured to the precise dimensional specifications required for correct rocker arm pivot alignment and consistent valve lift across the full RPM range.
- Drop-In Replacement Fit — Engineered to seat directly into the OEM rocker arm carrier without rework, matching the original shaft diameter, length, and retention method.
- Broad Model Coverage — A single shaft fits MP20 and MP12 Single Direction Plates, plus GB3000G, GS3500Gi, and G3500G series generators, simplifying parts inventory for multi-machine fleets.
- Sustained Valve Timing Accuracy — A correctly fitted rocker shaft maintains proper valve timing and lift; a worn or damaged shaft causes inconsistent valve actuation, leading to power loss, rough running, and accelerated wear on the rocker arms and cam lobes.
- OEM Part Number Confidence — Sold under the original Wacker Neuson part number 5000408476, so you can cross-reference against your service manual or parts diagram with full confidence before purchase.
The valve rocker shaft serves as the central pivot axis for the rocker arm assembly in the engine's valvetrain. It holds each rocker arm in precise alignment so that camshaft rotation is accurately translated into controlled opening and closing of the intake and exhaust valves. When the shaft wears, develops surface scoring, or loses its retention, rocker arms can shift laterally or rock unevenly, disrupting valve timing and reducing combustion efficiency — symptoms that typically show up as rough idling, reduced power output, and increased fuel consumption. Replacing a worn shaft promptly restores correct valvetrain geometry and protects the surrounding components from secondary wear.
Part Details
| Part Number | 5000408476 |
|---|---|
| Old Part Number | 0408476 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Valve Rocker Shaft |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Single Direction Plates | MP20 | 5000630379 |
| Single Direction Plates | MP12 | 5000630380 |
| GB3000G | GB3000G CE | 5100079446 |
| GS3500Gi | GS3500Gi CE | 5100079448 |
| G3500G | G3500G CE | 5100079450 |
| G3500G | G3500G LA | 5100079451 |
| GS3500Gi | GS3500Gi CN | 5100079595 |
| G3500G | G3500G CN | 5100079597 |
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