The Wacker Neuson Piston is a genuine OEM component designed for DPU 4045H and DPU 5045H series diesel reversible vibratory plate compactors. Sourced directly from Wacker Neuson, this piston is manufactured to the exact tolerances required to maintain proper compression and engine output in these heavy-duty diesel-powered machines. Part number covers an extensive range of DPU 4045H and DPU 5045H machine configurations, so verify your machine number before ordering to confirm compatibility. When a worn or damaged piston is holding your compactor off the job, replacing it with the correct OEM part gets you back to full compaction performance without guesswork.
Key Features
- OEM Compression Tolerancing — Machined to Wacker Neuson's exact bore dimensions, ensuring the correct compression ratio is maintained in the diesel engine for consistent power output.
- Direct-Fit Replacement — Engineered to drop into the existing cylinder bore and connect to the original connecting rod assembly without modification to engine components.
- Broad DPU Series Coverage — Compatible with multiple DPU 4045H and DPU 5045H configurations, including 50 kN reversible vibratory plate variants across numerous machine build numbers.
- Restores Full Engine Output — A degraded piston reduces compression, causing loss of power and poor compaction force; replacing with 5000126913 restores the engine to its rated performance.
- Fuel System Integrity — Correct piston fit prevents blow-by, which can contaminate engine oil and accelerate wear on cylinder walls and rings — making this a critical part for long engine life.
The piston is a core reciprocating component inside the engine's cylinder, converting the energy released by diesel combustion into the mechanical force that drives the vibratory plate compactor. It travels up and down within the cylinder bore, compressing the air-fuel mixture on each upstroke and transferring the resulting combustion force through the connecting rod to the crankshaft. When a piston wears, cracks, or loses its sealing integrity, compression drops, engine power falls off, and the machine may produce excessive smoke, consume more fuel, or fail to start reliably — all of which directly compromise compaction performance in the field.
Part Details
| Part Number | 5000126913 |
|---|---|
| Old Part Number | 0126913 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Reversible Vibratory Plate, 50 kN, 45cm/18in | DPU 5045H | 5000007862, 5000007936, 5000007965, 5000610045, 5000610046, 5000610047, 5000610052 |
| Reversible Vibratory Plate, 50 kN, 45cm/18in | DPU 4045H | 5000007888, 5000007935, 5000610043, 5000610044, 5000610051, 5000610064 |
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.
