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 GV portable generators. Sourced directly from Wacker Neuson, this piston ring matches the original specification of the engine fitted across these machine families. Compatible models include the BFS 914A, BFS 914AB, BFS 935AB, BFS 940, BFS 940A, BPU 3050A, BPU 3750Ats, BPU 4045A, GV5000A, and GV5003A — making part number a versatile stock item for fleets running multiple Wacker Neuson machines. Keeping a genuine OEM piston ring on hand means faster turnaround when engine service is due and confidence that the part will seat correctly the first time.
Key Features
- OEM Dimensional Accuracy — Manufactured to the exact bore diameter and ring thickness specified for the original engine, ensuring correct compression seal without recutting or shimming.
- Drop-In Engine Compatibility — Engineered to install directly into the cylinder bore of compatible BFS, BPU, and GV model engines with no alteration to the piston or cylinder wall required.
- Broad Fitment Across Three Machine Families — Covers BFS floor saws, BPU 3050A, BPU 3750Ats, and BPU 4045A reversible plate compactors, plus GV5000A and GV5003A portable generators.
- Restored Compression and Power Output — A worn or broken piston ring causes compression loss, increased oil consumption, and hard starting; replacing with a correctly spec'd ring restores engine performance to operating standard.
- Genuine Wacker Neuson OEM Part — Part number 5100001286 is a factory-issued component, not a substitute, so you know it carries the same material grade and heat treatment as the ring it replaces.
A piston ring forms the dynamic seal between the piston and the cylinder wall inside a small gasoline engine. Its primary job is to contain combustion pressure above the piston, transfer heat away from the piston into the cylinder wall, and prevent engine oil from migrating up into the combustion chamber. When a piston ring wears, breaks, or loses tension, combustion gases blow past the piston — a condition known as blow-by — causing a noticeable drop in power, increased fuel consumption, excessive smoke, and oil fouling of the spark plug. Replacing the ring with a correctly dimensioned OEM part like the Wacker Neuson 5100001286 restores the tight seal the engine needs to run at full rated output.
Part Details
| Part Number | 5100001286 |
|---|---|
| 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 |
| 50Hz Portable Value Generator | GV5003A | 5000009347, 5000009362, 5100002154 |
| 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 |
| 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.
