The Wacker Neuson Piston is a genuine OEM component designed for a broad range of Wacker Neuson BFS floor saws, BPU reversible vibratory plate compactors, and GV5000A/GV5003A portable generators. Sourced directly from Wacker Neuson, part meets the exact tolerances required for proper engine combustion and compression across all compatible models. Confirmed fitment spans the BFS 914A, BFS 914AB, BFS 935AB, BFS 940, BFS 940A, BPU 3050A, BPU 3050A US, BPU 3750Ats, BPU 3750Ats US, BPU 4045A, BPU 4045A US, GV5000A, and GV5003A. When a worn or damaged piston is the cause of lost compression or poor engine performance, replacing it with the correct OEM part restores the machine to full working specification.
Key Features
- OEM Compression Integrity — Manufactured to Wacker Neuson's exact bore diameter and ring-groove tolerances, ensuring the compression seal this engine was designed to deliver.
- Drop-In Engine Replacement — Engineered to the original piston profile and pin dimensions, so it installs directly into the cylinder bore without machining or fitting adjustments.
- Wide Multi-Model Fitment — A single part number covers BFS floor saws, BPU 3050A/3750Ats/4045A reversible plate compactors, and GV5000A/GV5003A portable generators, consolidating your service inventory.
- Restored Engine Power Output — A correctly fitted piston maintains the combustion pressure needed for full power delivery; a worn piston causes blow-by, oil burning, and loss of cutting or compaction force.
- Fuel System Safety Compliance — Proper piston sealing prevents unburned fuel from passing into the crankcase, reducing the risk of oil dilution and uncontrolled combustion events during operation.
The piston is the reciprocating heart of a four-stroke engine, converting the force of combustion into the rotational power that drives the blade, eccentric weight, or generator output. It travels up and down inside the cylinder bore thousands of times per minute, compressing the air-fuel mixture on the upstroke and transmitting combustion energy to the crankshaft on the power stroke. When a piston wears, cracks, or loses its ring seal, compression drops sharply — the engine becomes hard to start, loses power, burns oil, and can suffer catastrophic internal damage if operation continues. Replacing the 5100000369 Piston with a genuine OEM part restores the correct compression ratio and ensures the engine runs cleanly and at rated output.
Part Details
| Part Number | 5100000369 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston |
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.
