The Wacker Neuson Valve Rotator Spring is a genuine OEM component designed for DPU and DPS series reversible and single-direction vibratory plate compactors, including the DPU 2430F, DPU 2440F, DPU 2450F, DPS2040, and DPS2050. As a direct OEM replacement, part is sourced from Wacker Neuson and built to the same specification as the original, ensuring a correct, drop-in installation with no guesswork. This spring is a small but critical engine valve train component — when it wears or loses tension, valve rotation is compromised, leading to uneven wear and reduced engine efficiency. Keeping this part in good condition is essential to maintaining consistent compaction performance across the DPU and DPS plate lines.
Key Features
- Genuine OEM Spring Tension: — Manufactured to the original load and rate specification, ensuring the valve rotator functions as designed and maintains consistent engine valve movement under operating conditions.
- Direct Drop-In Installation: — Engineered to seat correctly in the valve train assembly of compatible DPU and DPS models, fitting the same mounting points as the original spring.
- Broad DPU and DPS Fitment: — Compatible with DPU 2430F, DPU 2440F (multiple configurations), DPU 2450F, DPS2040, and DPS2050 vibratory plate compactors.
- Protects Engine Valve Longevity: — A functioning valve rotator spring promotes even valve seat wear; a failed or weak spring accelerates one-sided wear and can lead to valve burning or compression loss.
- Sourced Direct from Wacker Neuson: — Genuine OEM part number 5000039974 carries full Wacker Neuson parts authenticity, giving you confidence that the component matches your machine's original build specification.
The valve rotator spring works within the engine's valve train to keep the valve rotating slightly with each opening cycle. This continuous rotation distributes heat and wear evenly around the valve face and seat, preventing hot spots and extending valve service life. When the spring loses tension or fails entirely, the valve stops rotating, wear concentrates in one area, and the engine may develop compression loss, rough running, or reduced power output — symptoms that are particularly disruptive during heavy compaction work.
Part Details
| Part Number | 5000039974 |
|---|---|
| Old Part Number | 0039974 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Valve Rotator Spring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Reversible Vibratory Plate, 24 kN, 30cm/12in | DPU 2430F | 5000006200 |
| Single Direction Vibratory Pla te, 20kN, 40cm/16in | DPS2040 | 5000007853 |
| Single Direction Vibratory Pla te, 20kN, 50cm/20in | DPS2050 | 5000007854 |
| Reversible Vibratory Plate, 29 kN, 50cm/20in | DPU 2450F | 5000007876 |
| Vibration Plate DPU 2440F WGB | DPU 2440F | 5000007877, 5000007878, 5000007879, 5000007886 |
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.
