The Multiquip EMHS12 Piston ST80 HS-12 is a genuine OEM component designed for the ST80 handheld saw. Sourced directly from Multiquip, this piston is built to the same specifications as the original part, ensuring consistent fit and function within the engine assembly. Verified compatible with ST80 series handheld saws, the part is the correct replacement when the original piston shows wear, scoring, or damage that compromises engine compression and cutting performance.
Key Features
- OEM-Grade Dimensional Accuracy — Manufactured to exact bore diameter and ring land tolerances required for proper compression and smooth cylinder travel in the ST80 engine.
- Drop-In Engine Replacement — Engineered to seat correctly within the existing cylinder bore, aligning with the wrist pin and connecting rod without modification.
- Confirmed ST80 Fitment — Specifically validated for the Multiquip ST80 handheld saw; use model code ST80 to confirm compatibility before ordering.
- Restores Full Engine Compression — A worn or damaged piston causes loss of compression, hard starting, and reduced power output; replacing with EMHS12 brings the engine back to proper operating condition.
- Genuine Multiquip OEM Part — Supplied as an authentic Multiquip replacement, meaning materials, coatings, and geometry match the part originally installed at the factory.
The piston is the reciprocating heart of a two-stroke or four-stroke engine, converting combustion pressure into the mechanical force that drives the tool. It must maintain a precise seal against the cylinder wall to sustain compression; if that seal degrades through scoring, ring wear, or physical damage, the engine loses power, runs roughly, or fails to start altogether. Replacing the piston with a correctly dimensioned OEM unit like the part restores the compression seal and returns the saw to full cutting performance.
Part Details
| Part Number | EMHS12 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Piston ST80 HS-12 |
Compatibility & Fitment
| Name | Model |
|---|---|
| ST80 | ST80 |
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.
