The Wacker Neuson Piston Ring is a genuine OEM component designed for a broad range of Wacker Neuson gasoline-powered equipment, including BFS floor saws, BPU reversible vibratory plate compactors, and GV portable generators. As a direct OEM replacement, part is manufactured to the same specifications as the original, ensuring a correct fit and consistent engine performance across all compatible models. Compatible units include the BFS 914A, BFS 935A, BFS 940 and BFS 940A floor saws, BPU 3050A, BPU 3750Ats, and BPU 4045A reversible plate compactors, and the GV5000A and GV5003A generator series. Sourcing the correct piston ring by part number is the most reliable way to ensure your engine rebuild is completed right the first time.
Key Features
- Genuine OEM Sealing Tolerances — Manufactured to the original bore diameter and ring gap specifications, maintaining proper compression and oil control in the cylinder.
- Drop-In Engine Rebuild Fit — Designed to seat correctly in the piston ring groove without modification, compatible with the original piston and cylinder bore dimensions across all listed models.
- Wide Cross-Family Compatibility — A single part number covers BFS floor saws, BPU reversible plate compactors, and GV portable generators, simplifying parts inventory for mixed fleets.
- Compression and Power Restoration — A fresh piston ring restores cylinder compression lost to ring wear, directly recovering engine power output, fuel efficiency, and throttle response.
- Emission and Oil Consumption Control — Worn rings allow oil to enter the combustion chamber, causing smoke and increased oil consumption; replacing with 5100001285 returns the engine to correct operating condition.
A piston ring seals the gap between the piston and the cylinder wall, serving two critical jobs: holding combustion pressure above the piston to generate power, and preventing engine oil from being burned in the combustion chamber. As the ring wears, compression leaks past it, causing the engine to lose power, run roughly, and consume more fuel. In severe cases, oil blow-by leads to excessive smoke from the exhaust and rapid fouling of the spark plug. Replacing the piston ring as part of a routine engine rebuild restores proper compression, controls oil consumption, and brings engine performance back to its original specification.
Part Details
| Part Number | 5100001285 |
|---|---|
| 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.
