Description
Overview:
The Piston 0.50 for Robin/Subaru EH34 Engine (OEM No. 247-23403-13) is a precision-made replacement piston for EH34 petrol engines found in construction and garden machinery. Manufactured from durable cast aluminium alloy, it provides low weight and efficient heat transfer while maintaining strength under heavy load. The 0.50 oversize specification is intended for cylinders that have been professionally re-bored to the next service size, restoring correct clearances and sealing. By reinstating compression and combustion efficiency, it helps recover engine power, smooth running, and reliability. Suitable for EH34-powered equipment commonly used on site and in landscaping, this piston is engineered for consistent performance and dependable service life.
Key Features:
- OEM-referenced replacement: 247-23403-13 for straightforward identification and compatibility
- 0.50 oversize (OS) specification for use after a controlled re-bore to the next service size
- Cast aluminium alloy construction for strength, low mass, and effective heat dissipation
- Precision-machined skirt, ring grooves, and pin bore for stable operation and reliable sealing
- Helps restore compression, power output, and fuel efficiency in worn engines
- Designed for the Robin/Subaru EH34 engine used across a wide range of equipment
- Compatible with matching 0.50 OS piston rings and gudgeon pin as specified by the service manual
- Straightforward to fit for competent users; measure clearances and orientation during assembly to manufacturer specifications
Typical Applications:
Used in EH34 engines fitted to construction and garden equipment such as plate compactors, generators, water pumps, concrete mixers, tillers, and chippers/shredders. Ideal when an engine has been re-bored due to wear or scoring and needs a 0.50 oversize piston to restore performance and reliability.
Also known as:
EH34 0.50 OS piston, 0.50 oversize engine piston for Subaru/Robin EH34, piston assembly 0.50 OS for EH series, Subaru-Robin piston 247-23403-13.
Fits Models:
EH34
Alternate Part Numbers:
RB247-23403-13, 247 23403 13, 247-23403-13, 2472340313
Product Specifications
| L&S Part No. | RB247 23403 13 |
|---|---|
| Manufacturer | Robin/Subaru |
| OEM No. | 247-23403-13 |
| Unit of Sale | 1 |
| Applications | EH34 |
| Machine Type | Engines |
| Fits Brands | Robin |
| Fits Models | EH34 |
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