The Wacker Neuson Piston is a genuine OEM component designed for the BTS 630, BTS 635, and BTS 635S series cut-off saws and floor saws. Sourced directly from Wacker Neuson, this piston is built to the same specification as the part that left the factory, ensuring a correct fit and consistent engine performance. It is confirmed compatible across multiple BTS-series configurations, including the BTS 630S and BTS 635S floor saw variants.
Key Features
- OEM Dimensional Accuracy — Manufactured to Wacker Neuson's exact bore diameter and ring groove tolerances, ensuring proper compression seal and combustion efficiency in the BTS engine.
- Direct Drop-In Replacement — Installs into the cylinder bore using the same orientation and wrist pin configuration as the original, with no adaptation needed to the connecting rod or cylinder.
- Broad BTS-Series Coverage — A single part number covers the BTS 630, BTS 630S, BTS 635, BTS 635S cut-off saw and floor saw lineup, simplifying parts sourcing across your fleet.
- Restored Engine Compression — A worn or scored piston causes hard starting, loss of power, and excessive fuel consumption; replacing it with this OEM unit restores full compression and consistent blade speed under load.
- Fuel System Integrity — Correct piston fit maintains the proper air-fuel ratio within the combustion chamber, supporting safe and efficient operation of this gasoline-powered cut-off saw.
The piston is the core reciprocating component inside the engine cylinder. It compresses the air-fuel mixture on each upstroke and transfers the force of combustion downward through the connecting rod to drive the crankshaft — and ultimately the cutting blade. When a piston becomes worn, scored, or cracked, compression drops sharply, causing hard starts, rough running, overheating, and a noticeable loss of cutting power. Replacing a failed piston promptly prevents further damage to the cylinder wall and connecting rod, keeping repair costs from escalating.
Part Details
| Part Number | 5000213681 |
|---|---|
| Old Part Number | 0213681 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Cut-off saw BTS 635 | BTS 635 | 5000610190, 5000610191 |
| Cut-off saw BTS630 | BTS 630 | 5000610186, 5000610187 |
| Cut-off Saw BTS 635S | BTS 635S | 5000610192, 5000610193, 5000610407 |
| Floor Saw BTS 630S | BTS 630S | 5000610406 |
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.
