The Wacker Neuson Cylinder and Piston Complete is a genuine OEM assembly designed for the BTS 630 and BTS 635S series gasoline cut-off saws. Sourced directly from Wacker Neuson, this part carries the same specification as the original component installed at the factory, ensuring a correct, drop-in fit with no guesswork on compatibility. It covers a broad range of BTS 630 and BTS 635S configurations, including standard cut-off saw and floor saw variants. When your saw loses compression, overheats, or shows signs of excessive wear in the bore, replacing the cylinder and piston as a complete assembly restores full engine performance and extends the service life of the machine.
Key Features
- Genuine OEM Compression Integrity — Matched bore-to-piston tolerances maintain correct compression ratio, so the engine starts reliably and delivers full cutting power.
- Complete Assembly — Cylinder and piston supplied together as a single unit, simplifying the rebuild process and eliminating the need to source and match components separately.
- Broad BTS Series Fitment — Verified for BTS 630, BTS 630S, BTS 635S, and BTS 635S cut-off saw and floor saw variants across multiple machine configurations.
- Restored Engine Output — A worn cylinder or scored piston causes power loss, hard starting, and excessive fuel consumption; a fresh OEM assembly brings the engine back to full operating spec.
- Fuel System Safety — Correct piston-to-cylinder clearance prevents blow-by, reducing the risk of fuel contamination in the crankcase and maintaining safe combustion conditions on a fuel-powered saw.
The cylinder and piston are the core of a two-stroke engine's power cycle. The piston moves up and down inside the cylinder bore, compressing the air-fuel mixture and transferring combustion energy to the crankshaft to drive the cutting wheel. Over time, the cylinder bore can score or wear out of round, and the piston rings lose their seal, causing a drop in compression that leads to hard starting, weak cutting performance, and rough running. Replacing both components together as a complete assembly ensures the bore and piston are properly matched, restoring the tight seal needed for efficient combustion and consistent power delivery.
Part Details
| Part Number | 5100005808 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Cylinder and Piston Complete |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 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.
Wacker Neuson
Wacker Neuson 5000213580 Cylinder Complete
