The Wacker Neuson Rocker Arm Shaft is a genuine OEM component designed for a wide range of Wacker Neuson equipment, including the RD12A-90 tandem roller series, CRT36-26A and CRTv36-26A trowels, BFS 2020AS saw, GS12Ai, and GPS9700A. As a factory-sourced part, the is manufactured to the exact tolerances required by Wacker Neuson, ensuring a direct, confident replacement. Cross-machine compatibility across rollers, trowels, and saws makes this a versatile service item worth keeping on hand. Confirm your model number against the fitment list before ordering to ensure correct application.
Key Features
- OEM-Spec Shaft Geometry — Machined to the exact diameter and length tolerances required by Wacker Neuson, ensuring correct rocker arm pivot action and valve timing.
- Genuine Wacker Neuson Part — Sourced directly from the manufacturer, so you receive the same component installed on the production line — no guesswork on material grade or hardness.
- Drop-In Installation — Matches all original mounting points and bearing surfaces, allowing the shaft to seat correctly without reworking the cylinder head or rocker assembly.
- Broad Fitment Across Equipment Lines — A single part number covers the RD12A-90 roller series, CRT36-26A and CRTv36-26A trowels, BFS 2020AS saw, GS12Ai, and GPS9700A.
- Protects Valve Train Integrity — A worn or damaged rocker arm shaft causes uneven valve actuation, leading to lost compression, rough running, and accelerated wear on rocker arms and camshaft lobes.
The rocker arm shaft is a precision pivot pin that runs through the rocker arm assembly in the engine's cylinder head, allowing the rocker arms to pivot and transfer motion from the camshaft to open and close the intake and exhaust valves. Its position and surface finish directly affect how evenly and consistently each valve is actuated — even minor wear or scoring on the shaft causes sloppy rocker movement, disrupting valve timing and reducing engine efficiency. When a rocker arm shaft fails, operators typically notice rough idling, loss of power, or abnormal tapping noises from the top of the engine, any of which will worsen quickly if left unaddressed.
Part Details
| Part Number | 5000226426 |
|---|---|
| Old Part Number | 0226426 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Rocker Arm Shaft |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD12A-90 ROLLER,DBL DRUM,GRN | RD12A-90 | 5000620369, 5000620058, 5000620320 |
| BFS 2020AS SAW | BFS 2020AS | 5000620086 |
| GS12Ai | GS12AI | 5000620317 |
| CRT36-26A Trowel w/Wheel Kit | CRT36-26A | 5000621000, 5000620999, 5000621001, 5000621002 |
| CRTv 36-26A Trowel, w/Wheel Kit | CRTv36-26A | 5200008544, 5200008545, 5200008546 |
| GPS9700A | GPS9700A | 5100042221 |
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.
