The Wacker Neuson Piston Ring Set (0,25) is a genuine OEM component designed for a broad range of Wacker Neuson BFS floor saws, GV portable generators, and BPU reversible vibratory plate compactors. As a genuine OEM part, is manufactured to the exact tolerances required to maintain proper compression and oil control within the engine cylinder. This oversize set — dimensioned at 0.25 mm — is intended for use during engine rebuilds where the cylinder bore has been honed or measured to accept the corresponding oversize ring profile. Confirmed fitment spans multiple BFS, GV, and BPU series machines, making this a versatile engine rebuild component across several Wacker Neuson product families.
Key Features
- Oversize Rebuild Specification: — Sized at 0.25 mm oversize to match a re-honed or bored cylinder, restoring correct compression sealing after wear.
- Genuine OEM Compression Integrity: — Manufactured to OEM ring-gap and profile tolerances, ensuring proper seating against the cylinder wall for full combustion efficiency.
- Direct Engine Replacement: — Designed to drop into the same piston grooves as the original rings, with no modification to the piston or cylinder required beyond standard honing to oversize spec.
- Broad Cross-Family Fitment: — Compatible with BFS 914 and BFS 940 series floor saws, GV5000A and GV5003A portable generators, and BPU 3050A, BPU 3750Ats, and BPU 4045A reversible vibratory plate compactors.
- Restored Engine Performance: — Worn or broken piston rings allow blow-by, loss of power, and oil consumption; replacing with 5100001284 restores engine compression and keeps the machine running at rated output.
Piston rings seal the combustion chamber between the piston and the cylinder wall, maintaining the compression needed to fire the engine reliably and preventing combustion gases from escaping into the crankcase. They also regulate oil by scraping excess lubricant from the cylinder wall to control consumption. When rings wear, crack, or lose tension, the engine loses compression, develops excessive oil consumption, produces blue smoke, or fails to start — symptoms that typically point to an engine rebuild. Installing the correct oversize ring set during a bore-and-hone rebuild restores the engine to serviceable condition and extends the working life of the machine.
Part Details
| Part Number | 5100001284 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston Ring Set (0,25) |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| BFS940 | BFS940 | 5100029229, 5100054574 |
| GV5000A | GV5000A | 5000009346, 5000009351, 5000009361, 5100006204 |
| BPU 3050A | BPU 3050A | 5000008763 |
| BPU 3050A US | BPU 3050A US | 5000610361 |
| BFS 935A SAW,BASIC | BFS 935AB | 5000008910 |
| BPU 3750Ats | BPU 3750Ats | 5000610408 |
| BPU3750Ats | BPU 3750Ats US | 5000610423 |
| Gasoline Reversible Vibratory Plate | BPU 3050 | 5000008955 |
| BFS 914AB SAW | BFS 914AB | 5000610092 |
| BPU 4045A US | BPU 4045A US | 5100009663, 5000610403 |
| GV5003A | GV5003A | 5100002154 |
| Petrol Floor Saw BFS 940A | BFS 940A | 5000610327, 5100004004 |
| Vibratory plate BPU 4045A | BPU 4045A | 5000610345 |
| Floor Saw | BFS 914A | 5100004002 |
| Floor saw BFS940 | BFS 940 | 5100009934 |
| Vibration Plate | BPU3050A CN | 5100039661 |
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.
