The Wacker Neuson Piston Ring is a genuine OEM component designed for a wide range of Wacker Neuson BFS floor saws, BPU reversible vibratory plate compactors, and GV5000A portable generators. Sourced directly from Wacker Neuson, this piston ring meets the exact tolerances required to maintain proper compression and engine performance across all compatible models. Confirmed fitment spans the BFS 914A, BFS 914AB, BFS 935AB, BFS 940, BFS 940A, and BFS940 floor saws, the BPU 3050, BPU 3050A, BPU 3050A US, BPU 3750Ats, BPU 3750Ats US, BPU 4045A, and BPU 4045A US reversible plate compactors, and the GV5000A and GV5003A generator models. Replacing a worn piston ring with a genuine OEM part like the ensures your engine returns to spec compression, preventing oil consumption, blow-by, and loss of power.
Key Features
- OEM Compression Tolerancing — Manufactured to exact bore and ring-gap specifications, ensuring the compression seal performs to original engine design parameters.
- Drop-In Engine Compatibility — Designed to seat correctly in the piston ring groove without machining or modification, fitting the shared engine platform used across the BFS, BPU, and GV model lines.
- Broad Fitment Across Three Machine Families — A single part number covers BFS floor saws, BPU reversible plate compactors, and GV portable generators, simplifying parts inventory for mixed fleets.
- Restores Engine Power and Efficiency — A failed or worn piston ring causes blow-by, increased oil consumption, and hard starting; replacing it with 5100001284 restores cylinder pressure and brings output back to rated performance.
- Fuel System Integrity — Correct compression maintained by a properly sealing piston ring prevents unburned fuel from passing into the crankcase, protecting oil quality and reducing the risk of uncontrolled combustion events.
A piston ring forms the dynamic seal between the piston and the cylinder wall, containing combustion pressure and transferring heat away from the piston into the cylinder bore. It also controls the thin film of oil on the cylinder wall, preventing excess oil from entering the combustion chamber. When a piston ring wears, cracks, or loses tension, compression drops, the engine loses power, oil consumption rises, and exhaust smoke typically appears — all signs that the ring needs immediate replacement to avoid further internal engine damage.
Part Details
| Part Number | 5100001284 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston Ring |
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.
