The Wacker Neuson Piston Pin is a genuine OEM component designed for a wide range of Wacker Neuson gasoline-powered equipment, including BFS floor saws, BPU reversible vibratory plate compactors, GV portable generators, and the BT48A. As a direct factory replacement, this piston pin is manufactured to the same specifications as the original part, ensuring a consistent, correct fit 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, GV5003A, and BT48A. When a piston pin wears or fails, addressing it immediately with a genuine OEM part protects the integrity of the engine rebuild and keeps the machine performing at full capacity.
Key Features
- Genuine OEM Dimensional Accuracy — Machined to the exact diameter and surface finish tolerances required to maintain proper wrist-pin-to-bore clearance, preventing slop, scoring, and premature engine wear.
- Drop-In Engine Replacement — Engineered to the original piston and connecting rod bore specifications, allowing direct installation without custom fitting or machining during engine service.
- Broad Cross-Family Fitment — A single part number covers BFS floor saws, BPU reversible plate compactors, GV portable generators, and the BT48A — simplifying parts stocking across your fleet.
- Protects Rebuilt Engine Performance — A correctly sized piston pin maintains the precise piston-to-crank geometry needed for full compression, consistent power output, and smooth operation under load.
- Critical Rebuild Component — Using the correct OEM pin during a top-end or short-block rebuild prevents misalignment between the piston and connecting rod, which can lead to catastrophic engine failure if overlooked.
The piston pin — also called a wrist pin — is a hollow cylindrical shaft that forms the pivot connection between the piston and the small end of the connecting rod inside a gasoline engine. It transfers the combustion force from the piston down through the connecting rod to rotate the crankshaft, making it one of the most mechanically stressed components in the engine. When a piston pin wears beyond tolerance, it produces a characteristic knocking noise under load, allows the piston to rock laterally in the bore, and can ultimately cause piston, ring, or cylinder wall damage if the engine continues to run.
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.
