Description
Overview:
This 35 mm diameter piston ring is a Genuine JAP part designed specifically for the JAP (J.A. Prestwich) Model 34 engine. It sits in the piston groove to seal the combustion chamber, maintain compression and help control oil on the cylinder walls. Made from a hardened iron alloy for strength and wear resistance, it is suitable for the operating temperatures and loads found in small vintage petrol engines used in plant and garden machinery. Supplied as genuine OEM No. 20927, it provides the correct profile and fit for reliable operation. Please note: this is unused old stock from a vintage range and may show storage-related tarnish, light marks or dirt consistent with age.
Key Features:
- Genuine JAP OEM part (No. 20927) for accurate fit on Model 34 engines
- 35 mm bore size for correct sealing and compression restoration
- Hardened iron alloy construction for durability under heat and load
- Helps reduce blow-by and oil consumption, improving starting and performance
- Precisely machined ring geometry for stable end gap and smooth running
- Compatible with standard 35 mm cylinder bores; check ring end gap and groove condition during fitting
- Suitable for vintage petrol engines with cast iron cylinders commonly used by JAP
- Unused old stock; may show cosmetic tarnish or storage marks due to age
Typical Applications:
Used during engine rebuilds, top-end refreshes, and compression loss repairs on JAP Model 34 engines found in compact plant and horticultural equipment. Typical equipment includes small cement mixers, portable generators, water pumps, rotavators and mowers where a dependable seal is required to restore performance and reliability.
Also known as:
Engine compression ring, piston sealing ring, cylinder ring, 35 mm bore piston ring, JAP Model 34 piston ring, J.A. Prestwich piston ring, OEM 20927 ring, replacement compression ring for vintage JAP engines.
Product Specifications
| L&S Part No. | 20927 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | JAP |
| OEM No. | 20927 |
| Unit of Sale | 1 |
| Key Features | - Genuine JAP OEM part for Model 34 engines - 35 mm bore size ensures correct sealing - Hardened iron alloy for durability - Reduces blow-by and oil consumption - Suitable for vintage petrol engines with cast iron cylinders |
| Fits Models | 34 |
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