Description
Overview:
This crankcase is a Genuine Villiers part for classic JAP petrol engines, providing the main housing for the crankshaft, bearings, and internal rotating assemblies. Built from robust cast metal for strength and dimensional stability, it keeps moving parts aligned and protected while helping to manage lubrication and heat. It is suitable for restoration or maintenance of JAP 4/3 and JAP 4 engines commonly used on compact construction and garden machinery. As unused old stock (vintage), the item may show light tarnishing or storage marks, but it remains serviceable and true to original specification. Choosing a genuine crankcase helps maintain correct fit, sealing surfaces, and bolt patterns, supporting reliable rebuilds and long-term engine performance.
Key Features:
- Genuine Part by Villiers for proven compatibility and quality control
- Correct fitment for JAP 4/3 and JAP 4 petrol engines, preserving original geometry
- Durable cast-metal construction resists distortion under operating loads and temperature
- Machined faces designed to support proper gasket sealing and bearing alignment
- Unused old stock: vintage authenticity with the benefit of zero run-time wear
- Suitable for restorations where originality and service life are priorities
- Helps protect internal components from debris and impact
- Supports efficient lubrication pathways when assembled with the correct gaskets and seals
- Stable mounting points for ancillary components and covers
- A practical replacement to extend the life of legacy plant and garden equipment
Typical Applications:
Used on JAP 4/3 and JAP 4 petrol engines fitted to vintage cement mixers, generators, rotavators, mowers, small pumps, and similar machinery. Ideal for rebuilds where the original crankcase is cracked, worn, or corroded, and for keeping heritage equipment operational in workshops, on site, or in agricultural settings.
Also known as:
JAP engine crankcase, Villiers JAP crankcase housing, engine lower crank housing, crankcase body, crankcase shell for JAP 4 series, JAP 4/3 crankcase casting.
Fits Models:
4/3, 43, JAP 4, JAP4
Product Specifications
| L&S Part No. | 21749 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Villiers |
| OEM No. | 21749 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | JAP |
| Key Features | - Genuine Villiers part ensures compatibility with JAP 4/3 and JAP 4 engines - Durable cast-metal construction resists distortion under load - Machined faces support proper gasket sealing and bearing alignment - Unused old stock maintains vintage authenticity - Suitable for restorations prioritising originality and service life |
| Fits Models | JAP 4, 3 |
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