The Wacker Neuson Piston Pin is a genuine OEM component designed for a wide range of Wacker Neuson equipment, including BFS floor saws, BPU reversible vibratory plate compactors, GV portable generators, and the BT48A. As a direct-source OEM part, the is manufactured to the same tolerances as the original, ensuring a correct fit within the engine assembly without modification. This piston pin services multiple machine families — from the BFS 914A, BFS 935A, BFS 940, and BFS 940A floor saws to the BPU 3050A, BPU 3750Ats, and BPU 4045A compactor series, as well as GV5000A and GV5003A generators. Choosing the genuine OEM means you are restoring the engine to its original operating specification and protecting the investment in your equipment.
Key Features
- Genuine OEM Dimensional Accuracy — Manufactured to exact bore and pin-diameter tolerances, ensuring proper load transfer between the piston and connecting rod without play or binding.
- Drop-In Engine Replacement — Matches the original pin dimensions and retaining configuration, allowing direct installation into the engine assembly without machining or adaptation.
- Broad Multi-Family Fitment — Compatible with BFS floor saws (914A, 935A, 940, 940A), BPU reversible plate compactors (3050A, 3750Ats, 4045A), GV5000A and GV5003A portable generators, and the BT48A.
- Engine Integrity Under Load — A correctly fitted piston pin maintains the alignment of the piston in the cylinder bore, preserving compression, fuel efficiency, and consistent power output across all supported machines.
- Critical Wear Component — A worn or damaged piston pin causes piston slap, accelerated cylinder wear, and loss of compression — replacing it promptly with the correct OEM part prevents further internal engine damage.
The piston pin — also known as a wrist pin — connects the piston to the small end of the connecting rod, allowing the rod to pivot as the piston travels up and down within the cylinder bore. It is one of the highest-stress components in a small engine, transmitting the full combustion force from the piston into rotational motion at the crankshaft. When a piston pin wears, develops play, or fails, it produces a characteristic knocking sound, causes uneven piston movement, and leads to rapid deterioration of the piston, connecting rod, and cylinder wall — making timely replacement with a correctly specified part essential to restoring engine performance.
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.
