The Wacker Neuson Piston Ring is a genuine OEM Piston Ring designed for the BTS 630, BTS 635, and BTS 635S series cut-off saws and floor saws. As a factory-sourced component, it is manufactured to the exact material and dimensional tolerances specified for these machines, ensuring a drop-in fit with no guesswork. This ring is compatible across multiple BTS 630 and BTS 635 configurations, including the BTS 630S and BTS 635S variants. Keeping the correct Piston Ring in service is one of the most effective ways to protect engine compression and extend the working life of your saw.
Key Features
- OEM-Grade Ring Sealing: — Manufactured to Wacker Neuson's specified ring gap and tension tolerances, delivering the compression seal the BTS engine is engineered around.
- Direct-Fit Replacement: — Sized to match the OEM bore and groove dimensions of the BTS 630 and BTS 635 piston assemblies, so installation follows the standard engine rebuild procedure without any modification.
- Broad BTS Series Coverage: — A single part number covers BTS 630, BTS 630S, BTS 635, BTS 635S cut-off saws and floor saws across multiple production configurations.
- Compression Integrity: — A correctly fitted Piston Ring maintains the combustion seal that keeps the engine pulling full power through abrasive cutting applications; a worn or broken ring leads to loss of compression, hard starting, and excessive oil consumption.
- Fuel System Safety Compliance: — Using the correct OEM ring maintains the combustion chamber seal that prevents unburned fuel blow-by — an important consideration in a gasoline-powered cut-off saw operating near combustible materials.
The Piston Ring forms a gas-tight seal between the piston and the cylinder wall, allowing the engine to build and hold the compression needed for reliable starting and full power output. It also controls oil consumption by preventing lubricant from entering the combustion chamber. When a Piston Ring wears, loses tension, or breaks, compression drops sharply — the engine becomes difficult to start, runs with reduced power, and may emit blue or white smoke. Replacing the ring at the correct service interval restores combustion efficiency and protects the cylinder bore from accelerated wear.
Part Details
| Part Number | 5000213682 |
|---|---|
| Old Part Number | 0213682 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston Ring |
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 |
| BTS635s | BTS635s | 5100005408 |
| BTS635S Cut-off Saw | BTS 635s | 5100005409, 5100005411 |
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.
