The Honda 13102-ZE3-000 Piston (0.25) is a genuine OEM oversize piston designed for GX340 horizontal shaft engines, GXV340 vertical shaft engines, EB5000, EG5000, EM5000, EX4500 generators, EW171 and EXW171 welder generators, H1011, H3011, and H3013 riding mowers, and H5013 and RT5000 multi-purpose tractors. As a genuine Honda part, it is manufactured to the exact dimensions Honda specifies for this 0.25 mm oversize bore application. Because Honda supersedes and updates pistons at serial number breaks, confirm your unit's serial number against the fitment table before ordering to ensure this is the correct oversize grade for your machine.
Key Features
- Genuine OEM Oversize Piston — manufactured by Honda to exacting dimensional tolerances for the 0.25 mm oversize bore, ensuring proper ring land geometry and skirt clearance for this specific rebuild specification
- Broad Equipment Coverage — a single part number covers GX340 and GXV340 engines, EB5000, EG5000, EM5000, and EX4500 generators, EW171 and EXW171 welder generators, H1011, H3011, and H3013 riding mowers, and H5013 and RT5000 multi-purpose tractors; confirm your model and serial number before ordering
- Oversize Variant — Verify Before You Order — the (0.25) designation identifies this as an oversize piston for a bored cylinder; match this grade to your cylinder's actual bore measurement to confirm the correct fit for your rebuild
- Compression and Power Restoration — a correctly sized piston seals the combustion chamber, maintains compression, and allows the engine to develop full power output; a worn or improperly sized piston causes blow-by, oil consumption, and loss of power
The piston is the reciprocating component at the heart of the engine's combustion cycle. It travels up and down inside the cylinder bore, compressing the air-fuel mixture on the upstroke and transmitting the force of combustion through the connecting rod to the crankshaft on the power stroke. When a cylinder is bored out to remove wear or scoring, a standard-dimension piston will no longer seal the bore correctly — an oversize piston such as this 0.25 mm grade is required to restore the running clearance between the piston and the cylinder wall. A piston that is undersized for the bore allows combustion gases to bypass into the crankcase, robbing the engine of compression, increasing oil consumption, and causing rough or hard starting.
Part Details
| Part Number | 13102-ZE3-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Piston (0.25) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB5000, EG5000, EM5000, EX4500 | All |
| Horizontal Shaft Engine | GX340 | All |
| Multi-Purpose Tractor | H5013, RT5000 | All |
| Riding Mower | H3011, H3013 | 1000001-2104755 |
| Riding Mower | H1011 | All |
| Vertical Shaft Engine | GXV340 | All |
| Welder Generator | EW171, EXW171 | All |
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.
