The Wacker Neuson Piston is a genuine OEM component designed for the P31A Power Unit for Wet Screed. Sourced directly from Wacker Neuson, this piston is manufactured to the exact tolerances required for dependable engine operation in wet screed applications. As a genuine OEM part, it carries the same specifications as the original component installed at the factory, giving you confidence in fitment and function from day one. Verify your model number against the P31A series before ordering to ensure this is the correct replacement for your unit.
Key Features
- OEM-Matched Tolerances — Manufactured to the exact bore diameter and compression height specifications of the original piston, ensuring proper compression and combustion efficiency in the P31A engine.
- Direct Drop-In Replacement — Engineered to install into the existing cylinder bore and connect to the original connecting rod without modification, streamlining your rebuild process.
- Confirmed Fitment — Verified for the P31A Power Unit for Wet Screed, so you can order with confidence knowing this is the correct part for your machine.
- Sustained Engine Output — A properly fitted piston maintains cylinder compression, enabling the P31A power unit to deliver consistent power to the wet screed head. A worn or damaged piston leads to loss of compression, rough running, and reduced screed performance.
- Fuel System Integrity — Correct piston-to-wall clearance prevents blow-by, protecting the engine from oil contamination and premature wear of rings and cylinder walls.
The piston is a core reciprocating component inside the engine cylinder, converting the force of combustion into rotational motion through the connecting rod and crankshaft. It must maintain a precise fit within the cylinder bore to seal combustion gases, sustain compression, and transfer power efficiently. When a piston becomes worn, scored, or cracked, the engine loses compression, consumes more fuel, produces excessive exhaust smoke, and can ultimately seize — making timely replacement critical to keeping the P31A power unit operational and the wet screed working at full capacity.
Part Details
| Part Number | 5000157592 |
|---|---|
| Old Part Number | 0157592 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Power Unit for Wet Screed | P31A | 5000009365 |
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.
