The Wacker Neuson Piston Pin is a genuine OEM component designed for a wide range of Wacker Neuson BFS floor saws, BPU reversible vibratory plate compactors, GV portable generators, and BT series equipment. As a direct factory replacement, this piston pin is manufactured to the same tolerances as the original part, ensuring a proper fit within the engine assembly. Compatible models include the BFS 914A, BFS 935AB, BFS 940 and BFS 940A floor saws, the BPU 3050A, BPU 3050A US, BPU 3750Ats, BPU 3750Ats US, BPU 4045A, and BPU 4045A US reversible plate compactors, the GV5000A and GV5003A portable generators, and the BT48A. Sourcing part number directly through an authorized Wacker Neuson parts channel means you receive the genuine article — no guesswork on fitment across this broad equipment lineup.
Key Features
- Genuine OEM Dimensional Accuracy — Manufactured to Wacker Neuson's original bore diameter and surface finish specs, ensuring correct wrist-pin clearance and smooth articulation between piston and connecting rod.
- Drop-In Engine Fit — Engineered to the same length, diameter, and retention groove profile as the original, allowing direct installation without machining or shimming.
- Broad Cross-Family Compatibility — A single part number covers BFS floor saws, BPU reversible plate compactors, GV portable generators, and BT series equipment, simplifying parts stocking for multi-machine fleets.
- Engine Integrity Restored — A worn or seized piston pin causes piston slap, accelerated cylinder wear, and power loss; replacing it with the correct OEM pin restores the engine's rated compression and output.
- Critical Fuel-System Adjacent Safety — Proper piston pin fit prevents uncontrolled combustion irregularities that can stress engine castings — important on fuel-powered equipment operating in demanding site conditions.
The piston pin — also called a wrist pin — is the hardened cylindrical pin that connects the piston to the small end of the connecting rod inside a reciprocating engine. It acts as the pivot point that transfers combustion force from the piston down through the connecting rod to the crankshaft, converting it into rotational power. When a piston pin wears, becomes loose, or seizes in its bore, it produces a distinctive knocking noise, causes uneven piston movement, and can lead to rapid destruction of the piston, rod, and cylinder wall if not addressed promptly.
Part Details
| Part Number | 5100000373 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston Pin |
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 |
| BT48A | BT48A | 5100081471 |
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.
