The Wacker Neuson is a genuine OEM Piston, Oversize 0.25 designed for VP and AP series single-direction vibratory plate compactors. This oversized piston is engineered for engine rebuilds where cylinder bore wear has been corrected to the 0.25 mm oversize specification, restoring compression and power output to original performance levels. It is confirmed compatible with the VP1340R, VP1340RW, VP1550R, VP1550RW, VP2050R, VP2050RW, and AP1550R vibratory plates. As a genuine Wacker Neuson OEM component, part is manufactured to the same tolerances and material specifications as the original engine part, ensuring a correct fit during reassembly.
Key Features
- OEM-Spec Oversize Tolerancing — Machined to the exact 0.25 mm oversize dimension, ensuring correct compression seal against a rebored cylinder wall without further modification.
- Genuine Wacker Neuson OEM Component — Sourced directly from Wacker Neuson, this piston meets the original metallurgical and dimensional specifications for these engines.
- Direct Engine Rebuild Fitment — Designed to drop into the correct bore size after a standard 0.25 mm overbore, pairing with existing connecting rod and pin hardware on supported models.
- Broad VP and AP Series Compatibility — Fits VP1340R, VP1340RW, VP1550R, VP1550RW, VP2050R, VP2050RW, and AP1550R single-direction vibratory plate compactors.
- Restored Compression and Power — A worn or undersized piston causes loss of compression, hard starting, and reduced centrifugal force output; the correctly sized 5000158403 restores engine power and plate compaction performance.
The piston is the reciprocating component inside the engine cylinder that compresses the air-fuel mixture and transfers combustion force to the crankshaft via the connecting rod. In a vibratory plate compactor engine, correct piston-to-wall clearance is critical — too much gap from wear causes blow-by, reduced compression, oil burning, and loss of the centrifugal force needed to compact soil or asphalt effectively. An oversize piston like the 5000158403 is used during an engine overhaul after the cylinder bore has been machined to remove wear, bringing the engine back to a tight, correctly sealed condition and full operating power.
Part Details
| Part Number | 5000158403 |
|---|---|
| Old Part Number | 0158403 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston, Oversize 0.25 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Value Vibratory Plate, 13 kN, 400mm/15.5in | VP1340RW | 5000009034 |
| Value Vibratory Plate, 15 kN, 500mm/19.5in | VP1550RW | 5000009030 |
| Single Direction Plates | AP1550R | 5000009538 |
| Value Vibratory Plate, 15 kN, 500mm/19.5in | VP1550R | 5000009029 |
| Value Vibratory Plate, 13 kN, 400mm/15.5in | VP1340R | 5000009033 |
| Value Vibratory Plate, 20 kN, 500mm/19.5in | VP2050R | 5000009088 |
| Single Direction Asphalt Plate | VP2050RW | 5000009511 |
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.
