The Wacker Neuson Ring Piston is a genuine OEM component designed for the BTS 1030 and BTS 1035 L3 series gasoline cut-off saws. Sourced directly from Wacker Neuson, this ring delivers the exact dimensions and material spec required to restore proper cylinder sealing and engine compression in your BTS power cutter. It is confirmed to fit multiple BTS 1030 and BTS 1035 L3 configurations, including standard and L3 variants across the full range of machine numbers in this family. When compression drops or oil consumption increases, replacing the piston ring with the correct OEM part gets your cut-off saw back to full cutting power.
Key Features
- OEM Compression Integrity — Manufactured to the exact bore diameter and ring gap tolerances specified for the BTS engine, ensuring consistent cylinder sealing from the first start.
- Direct Drop-In Fit — Matches the original ring groove depth and width, so it seats correctly in the piston without machining or adjustment.
- Broad BTS Series Compatibility — Fits BTS 1030, BTS 1030 L3, BTS 1035, and BTS 1035 L3 cut-off saw models, covering both standard and L3 power cutter configurations.
- Restored Cutting Performance — A worn or broken piston ring causes power loss, hard starting, and excessive fuel consumption; a correctly fitted ring restores full two-stroke output and throttle response.
- Engine Longevity — Proper ring seal prevents combustion gases from bypassing into the crankcase, protecting bearings and other lower-end components from premature wear.
The piston ring is a thin, precision-machined band that sits in a groove around the piston and presses against the cylinder wall to seal the combustion chamber. In a two-stroke engine like the one powering the BTS cut-off saw, this seal is critical — it traps the air-fuel mixture during compression and contains combustion pressure to drive the piston downward with full force. When the ring wears, loses tension, or breaks, compression drops, the engine becomes difficult to start, power output falls noticeably, and the machine may consume excessive oil or emit blue smoke. Replacing the ring restores the combustion seal and returns the engine to its rated performance.
Part Details
| Part Number | 5000108121 |
|---|---|
| Old Part Number | 0108121 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Ring Piston |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Power Cutter BTS 1035 L3 | BTS 1035 L3 | 5000008912, 5000008990, 5000610076, 5000610182 |
| Cut-Off Saws | BTS 1030 L3 | 5000008989, 5000610075 |
| Cut-off Saw with 1in Arbor | BTS 1035 | 5000007975 |
| Cut-off Saw with 20mm Arbor | BTS 1030 | 5000008339 |
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.
