The Honda 13104-889-010 is a genuine OEM Piston (0.75) designed for a wide range of Honda equipment, including G300 horizontal shaft engines, E2500, EB3000, and EM3000 generators, FR500 and FR700 tillers, the HS70 two-stage snow blower, WT20 and WT30 water pumps. This is an oversize piston — the (0.75) designation indicates it is sized 0.75 mm over the standard bore, intended for use following a cylinder rebore. Because Honda supersedes and revises parts across serial breaks, confirm your unit's serial number against the fitment table before ordering to ensure part number 13104-889-010 is the correct specification for your machine. As a genuine Honda OEM component, it is manufactured to the same tolerances.
Key Features
- Oversize Bore Specification — the (0.75) designation means this piston is 0.75 mm over standard; it is intended for use in a cylinder that has been bored or honed to the matching oversize, restoring correct compression and oil control.
- Genuine OEM Component — manufactured by Honda to the same dimensional tolerances as the original, ensuring proper ring land geometry, pin bore alignment, and skirt clearance for the engines it is designed for.
- Broad Cross-Equipment Fitment — a single part number covering G300 horizontal shaft engines, E2500, EB3000, and EM3000 generators, FR500 and FR700 tillers, the HS70 two-stage snow blower, and WT20 and WT30 water pumps; confirm your serial number and bore size before installing.
- Serial Number Verification Recommended — Honda revises piston specifications at production breaks; check your machine's serial number against the fitment table to confirm this oversize is correct for your unit.
- Compression and Power Restoration — a worn or scored piston allows combustion gases to bypass the rings, causing loss of compression, increased oil consumption, and hard starting; a correctly fitted replacement restores the cylinder seal that efficient combustion depends on.
The piston is the reciprocating component at the heart of the 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 to the crankshaft via the connecting rod on the power stroke. The piston rings seal combustion gases above the piston and regulate the oil film on the cylinder wall below it. When a piston is worn, scuffed, or out of round, that seal breaks down: compression drops, oil burns off faster than it should, and the engine becomes difficult to start and low on power. An oversize piston like this one is used after the cylinder has been bored to remove scoring or taper, bringing the bore-to-piston clearance back into specification and returning the engine to full performance.
Part Details
| Part Number | 13104-889-010 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Piston (0.75) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | E2500, EB3000, EM3000 | All |
| Horizontal Shaft Engine | G300 | All |
| Tiller | FR500, FR700 | All |
| Two-Stage Snow Blower | HS70 | All |
| Water Pump | WT20, WT30 | 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.
