Description
Overview:
The Sleeve Fitted to JAP 4/44 Engines (OEM 20997) is a genuine JAP cylinder sleeve designed to restore the working bore of vintage JAP stationary engines, including JAP 4/44 and JAP 3. Made from durable, precision‐machined metal, it provides a stable running surface for piston rings, helping maintain compression, reduce oil consumption, and manage heat transfer. Supplied as unused old stock, it keeps original factory specification and authenticity, though minor age-related marks may be present. This sleeve is suitable for use during rebuilds and repairs of heritage plant, agricultural and garden machinery powered by JAP engines. It is an ideal choice for owners and restorers who want a correct-fit component that supports reliable performance while preserving originality.
Key Features:
- Genuine JAP part for assured fit and compatibility
- OEM number 20997 for easy identification and ordering
- Unused old stock to preserve authenticity in restorations
- Robust metal construction for long service life
- Precision-machined bore supports correct ring seating and compression
- Helps recover power, efficiency and smooth running
- Suitable for JAP 4/44 and JAP 3 engine families
- Precision component; competent installation and correct clearances advised
- Ideal where bore wear, scoring or ovality is present
- Supports routine overhauls and full restorations of classic engines
Typical Applications:
Used during engine rebuilds and repairs on vintage JAP-powered equipment found in small plant, pumps, generators, and period horticultural or agricultural machinery. Replaces a worn liner to restore compression, stabilise temperatures, reduce oil consumption, and extend service life for dependable day-to-day running.
Also known as:
Engine liner, cylinder sleeve, cylinder liner, engine insert, barrel liner.
Fits Models:
JAP 3, JAP 4, JAP 4/44, JAP 444
Alternate Part Numbers:
20997
Product Specifications
| L&S Part No. | 20997 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | JAP |
| OEM No. | 20997 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | JAP |
| Key Features | - Genuine JAP part ensures fit for JAP 4/44 and JAP 3 engines - OEM number 20997 simplifies identification and ordering - Unused old stock maintains authenticity in restorations - Precision-machined metal supports correct ring seating and compression - Suitable for vintage engine rebuilds and repairs |
| Fits Models | JAP 4, 3 |
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