The Honda 13101-ZA0-010 Piston (Standard) is a genuine OEM component designed for the GX360 horizontal shaft engine, EL5000 and ES6500 generators, EV4010, EV6010 and EVD4010 RV generators, the EX5500 generator, and H4514, HT3813 and HT4213 lawn tractors. As a genuine Honda part, it is manufactured to the same specifications as the original, ensuring correct bore diameter, ring groove dimensions, and piston-to-wall clearance for a proper fit. Verify your machine's serial number against the fitment table to confirm this is the right piston for your specific unit before ordering.
Key Features
- Correct Bore Geometry — as a genuine OEM piston, the ring grooves, pin bore, and skirt profile match Honda's original dimensions exactly, maintaining the compression and oil-control performance the engine was designed to deliver.
- Standard Displacement — the Standard designation means this piston is sized for a standard, un-bored cylinder; use this part on engines that have not been bored oversize.
- Broad Fitment — fits the GX360 horizontal shaft engine, EL5000, ES6500 and EX5500 generators, EV4010, EV6010 and EVD4010 RV generators, and H4514, HT3813 and HT4213 lawn tractors, including GX360-powered equipment.
- Check Your Serial Number — Honda supersedes internal components at serial breaks; confirm your unit's serial number against the fitment table to make sure part number 13101-ZA0-010 is correct for your production run.
- Restores Lost Compression — a worn or scored piston allows combustion gases to blow past the rings, causing hard starting, loss of power, and increased oil consumption; replacing it with this genuine piston restores proper cylinder pressure.
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 transferring the force of combustion to the connecting rod and crankshaft on the power stroke. The piston's ring grooves carry the compression and oil-control rings that seal combustion gases above and manage oil below, so a correctly dimensioned piston is critical to both power output and engine longevity. When a piston wears, cracks, or becomes scored — whether from overheating, lack of lubrication, or simple high-hour fatigue — compression drops, oil consumption rises, and the engine becomes difficult to start or unable to reach its rated output; replacing the piston returns the engine to its designed operating condition.
Part Details
| Part Number | 13101-ZA0-010 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Piston (Standard) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EL5000, ES6500, EX5500 | All |
| Horizontal Shaft Engine | GX360 | All |
| Lawn Tractor | H4514, HT3813, HT4213 | All |
| RV Generator | EV4010, EV6010, EVD4010 | 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.
