The Wacker Neuson Rocker Arm is a genuine OEM component designed for G40 and G50 series portable generators. Sourced directly from Wacker Neuson, this rocker arm meets the exact specifications set for these machines, ensuring a correct, hassle-free installation. It is compatible across multiple G40 configurations — including standard, mobile, and LATAM Premium variants — as well as the G50 generator. When you need the right part the first time, the OEM designation on the means there are no guesses about fitment or performance.
Key Features
- Genuine OEM Valve Train Precision — Manufactured to the exact geometry and hardness specs required for correct valve actuation in Wacker Neuson G-series engines.
- Drop-In Engine Fitment — Mounts directly to the original rocker shaft position with no rework; matches factory pivot points and contact surfaces.
- Broad G40 and G50 Coverage — Fits standard G40 generators, G40 mobile generator configurations, G40 LATAM Premium 50Hz units, and the G50 generator series.
- Sustained Power Output — A correctly functioning rocker arm keeps valve timing accurate, preserving engine compression and consistent generator output; a worn rocker causes misfires, power loss, and excessive valve noise.
- Fuel System and Combustion Integrity — Proper rocker arm geometry ensures intake and exhaust valves open and close fully, protecting the engine from fuel-rich running conditions and heat buildup.
The rocker arm is a pivoting lever in the engine's valve train that transfers motion from the camshaft — via the pushrod — to open and close the intake and exhaust valves. In a portable generator like the G40 or G50, precise valve timing is directly linked to stable RPM and clean power delivery to connected equipment. When a rocker arm wears at its contact pad or pivot point, valve lift becomes inconsistent, leading to rough running, loss of compression, increased fuel consumption, and in advanced cases, valve or seat damage that requires a much more involved repair.
Part Details
| Part Number | 5200021270 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Rocker Arm |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Generator | G40 | 5200015906, 5200015907, 5200016640, 5100029184 |
| Generator | G50 | 5200015909 |
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.
