The Wacker Neuson Piston 0.50 is a genuine OEM component designed for the GPS6600A, GP6600A, GV6600A, GP6600, and G7AI generator series, as well as the BFS 1318AS self-propelled walk-behind saw. Sourced directly from Wacker Neuson, this oversized piston is manufactured to the exact dimensional tolerances required for a proper bore fit — delivering the compression seal and piston-to-wall clearance the engine depends on. It is a direct OEM replacement, covering a wide range of portable generator and saw models in the Wacker Neuson lineup. When you need the right piston at the right spec, part number removes the guesswork.
Key Features
- Oversized Bore Precision: — Manufactured as a 0.50 oversize piston, machined to the exact diameter needed for a correctly honed or worn bore — maintaining proper compression and ring seal.
- Genuine OEM Construction: — Produced by Wacker Neuson to the same material and dimensional standards as the original, ensuring correct ring groove dimensions, pin bore sizing, and crown profile.
- Drop-In Engine Replacement: — Engineered to install with OEM piston rings and wrist pin components, following the same assembly procedure as the factory original with no improvised fitting.
- Broad Generator and Saw Fitment: — Compatible with GPS6600A, GP6600A, GP6600, GV6600A, G7AI generator models and the BFS 1318AS walk-behind saw, covering multiple configurations across the Wacker Neuson portable power range.
- Restored Engine Output: — A correctly sized replacement piston restores cylinder compression, preventing the power loss, excessive oil consumption, and hard starting that a worn or scored piston causes.
The piston is the reciprocating component at the heart of the engine's combustion cycle — it transfers the force of ignition through the connecting rod to drive the crankshaft and produce usable power. An oversized piston like the 5000209993 is used during engine rebuilds when the cylinder bore has been re-honed to remove scoring or wear, restoring the tight clearance needed for proper compression. When a piston wears, cracks, or loses its ring land integrity, the engine loses compression rapidly — resulting in hard starting, loss of power output, and accelerating internal damage if left unaddressed.
Part Details
| Part Number | 5000209993 |
|---|---|
| Old Part Number | 0209993 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston 0.50 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| GPS6600A GENERATOR,CAN GFI | GPS6600A | 5000620102, 5000620386, 5000620331 |
| GP6600A GENERATOR,CAN GFI | GP6600A | 5000620100, 5000620101, 5000620329, 5000620330, 5000620384 |
| Premium Portable Generator | GP6600 | 5000620385 |
| G 7AI | G7AI | 5000009104 |
| Self-propelled Walk-behind Saw | BFS 1318AS | 5000620085 |
| GPS6600A Generator, CSA | GPS6600 | 5000620988 |
| Value Generator, 60Hz | GV6600A | 5000620289, 5000620336 |
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.
