The Wacker Neuson is a genuine OEM 0.25 Piston designed for the GP5600A, GPS5600A, and GV5600A series portable generators. As a factory-sourced component, is manufactured to the exact dimensions and material specifications of the original part, ensuring a correct fit within the engine assembly. This oversize piston is intended for engines that have been bored out during a rebuild, restoring proper compression and cylinder-wall clearance. Compatible across the full GP5600A, GPS5600A, and GV5600A generator lineup, including wheel kit and electric start variants.
Key Features
- Oversize Rebuild Specification: — The 0.25 oversize designation means this piston is sized for a cylinder that has been bored 0.25 mm over standard, making it the correct choice for engine rebuilds rather than a like-for-like swap.
- Genuine OEM Construction: — Sourced directly from Wacker Neuson, this piston meets the original metallurgical and dimensional tolerances specified for the GP5600A engine, ensuring correct compression ratio and ring groove geometry.
- Drop-In Engine Rebuild Fit: — Engineered to install in the same bore orientation and pin configuration as the original, streamlining the rebuild process without the need to source aftermarket alternatives.
- Broad Generator Series Coverage: — Fits the GP5600A, GPS5600A, and GV5600A portable generator families, including standard, wheel kit, electric start, and CAN GFI variants.
- Sustained Engine Output: — A correctly fitted oversize piston restores cylinder seal and compression, allowing the generator to deliver its rated power output consistently. A worn or undersized piston causes blow-by, oil consumption, and loss of power.
A piston is the reciprocating component inside the engine cylinder that transfers combustion energy to the crankshaft via the connecting rod. In a portable generator engine, the piston must maintain a precise fit within the cylinder bore to seal combustion gases, support the piston rings, and sustain the compression needed for reliable starting and full power output. An oversize piston like the 5000162635 is used when the original cylinder bore has been machined to a larger diameter during an engine overhaul — running a standard-size piston in a bored cylinder would result in excessive clearance, poor compression, increased oil consumption, and eventual engine failure.
Part Details
| Part Number | 5000162635 |
|---|---|
| Old Part Number | 0162635 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | 0.25 Piston |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Premium Portable Generator | GP5600A | 5000620094, 5000620095, 5000620042, 5000620043, 5000620091, 5000620092, 5000620011, 5000620012, 5000620381, 5000620382 |
| GPS5600A,CAN GFI | GPS5600A | 5000620096, 5000620044, 5000620093, 5000620013, 5000620383 |
| Value Generator | GV5600A | 5000620410, 5000620288, 5000620335 |
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.
