The Wacker Neuson Decompression Shaft is a genuine OEM component designed for the RD7H, RD 7ES, and RD 7S series double drum vibratory rollers. As a factory-sourced part, is manufactured to the exact tolerances and material specifications of the original component, ensuring a direct, trouble-free installation with no improvisation required. Confirmed fitment spans the full RD7H family, including the RD7H-ES, RD7H-S, and their EU-spec counterparts, making this the right choice whether you're servicing a domestic or European-market machine. Keep a genuine Wacker Neuson part in the drivetrain and protect the performance integrity of your roller.
Key Features
- OEM-Spec Shaft Material and Tolerancing — Manufactured to the same dimensional and hardness standards as the original, ensuring the shaft engages and disengages the decompression mechanism consistently over its service life.
- Drop-In Installation — Engineered to replace the original shaft position-for-position, using existing hardware and mounting points within the engine assembly.
- Broad RD7H Series Coverage — A single part number covers the RD7H, RD7H-ES, RD7H-S, and their EU-spec variants, simplifying parts sourcing across your fleet.
- Dependable Cold-Start Performance — A correctly functioning decompression shaft allows the engine to turn over without fighting full compression, protecting the starter system and enabling fast, consistent starts.
- Genuine Wacker Neuson OEM Part — Sourced directly from Wacker Neuson, part number 5000202403 carries the same quality assurance as every component that left the factory with these machines.
The decompression shaft is a small but critical engine component that temporarily relieves cylinder compression during the starting sequence. By momentarily opening a decompression valve, it allows the engine to reach a cranking speed where ignition can occur without overloading the starter motor or recoil mechanism. When the shaft wears, bends, or fails, the engine becomes noticeably harder to start — or may not start at all — and the added strain on the starting system can lead to further damage. Replacing a worn decompression shaft promptly restores normal starting behavior and protects the broader engine from stress-related wear.
Part Details
| Part Number | 5000202403 |
|---|---|
| Old Part Number | 0202403 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Decompression Shaft |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD 7ES | RD7H-ES EU | 5000620794 |
| RD7H-ES Tandem Roller | RD7H-ES | 5000009408 |
| RD7H-S ROLLER,DOUBLE DRUM | RD7H-S | 5000009487 |
| RD 7S | RD7H-S EU | 5000620795 |
| Double Drum Vibratory Roller | RD7H | 5000008042 |
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.
