The Wacker Neuson Outer Valve Spring is a genuine OEM component designed for RD25 Hydrostatic Double Drum Vibratory Rollers. Sourced directly from Wacker Neuson, this spring meets the exact tension and dimensional specifications required by the engine valve train on these tandem rollers. It is a direct fit for RD25 machines operating under model configurations and. Keeping this component in proper working condition is essential to maintaining correct valve timing and consistent engine performance on the RD25.
Key Features
- Correct Spring Rate for Valve Control — Manufactured to the precise tension specification required to seat and return the valve reliably through each engine cycle.
- Genuine OEM Part — Supplied by Wacker Neuson, ensuring this outer valve spring matches the original design intent without substitution or compromise.
- Direct Fitment for RD25 Rollers — Confirmed fit for RD25 Hydrostatic Double Drum Vibratory Roller configurations, dropping into the valve assembly without rework.
- Engine Timing Integrity — A correctly tensioned outer valve spring holds valve seating pressure within spec, supporting clean combustion and stable power output on the RD25.
- Valve Train Protection — The outer spring works in conjunction with the inner spring to prevent valve float at operating RPM — a worn or broken spring can cause misfires, power loss, or valve damage.
The outer valve spring is part of a dual-spring valve train assembly, where it surrounds an inner spring to provide the primary closing force on each intake or exhaust valve. Its job is to keep the valve firmly seated against the cylinder head between cam lobes, ensuring the combustion chamber seals properly during the compression and power strokes. When an outer valve spring weakens, cracks, or breaks, the valve can float or fail to close fully — leading to rough running, loss of compression, increased fuel consumption, or mechanical damage to the valve and seat.
Part Details
| Part Number | 5000107665 |
|---|---|
| Old Part Number | 0107665 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Outer Valve Spring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Hydrostatic Double Drum Vibrat ory Roller | RD25 | 5000008058, 5000009317 |
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.
