Description
Overview:
The Cylinder Head Gasket to suit JAP 4/3 petrol engines is a Genuine Part supplied under the Villiers brand, made for dependable sealing between the cylinder head and the engine block. Manufactured from durable gasket material suitable for high temperatures and petrol use, it helps maintain correct combustion pressure and prevents gas and oil seepage at the head joint. This gasket is a direct-fit replacement for classic JAP engines commonly found in older construction and garden machinery. It is designed for accurate alignment with head and barrel passages to support consistent performance and easy assembly. Ideal for maintenance or full rebuilds on JAP 3 and JAP 4 engines, it restores a clean, reliable seal after head removal or when addressing loss of compression. Part reference: 21635.
Key Features:
- Genuine Part for correct fit and long service life
- Designed for JAP 4/3 pattern; direct replacement for JAP 3 and JAP 4 engines
- Heat- and fuel-resistant gasket material suited to petrol engines
- Precision-cut for flatness and accurate port and stud locations
- Helps restore compression and prevents blow-by at the head joint
- Resists oil and combustion by‐products to limit leaks and staining
- Smooth sealing faces to bed in evenly under correct torque
- Works with the original studs, nuts, and standard torque settings (refer to engine manual)
- Suitable for routine head servicing, decokes, and full overhauls
- Supplied as a single cylinder head gasket
Typical Applications:
Used during engine rebuilds, head gasket replacement, or top‐end servicing on JAP 3 and JAP 4 petrol engines powering older plant and garden machinery. Common on classic plate compactors, site mixers, pumps, generators, and mowers where a reliable head seal is needed to maintain smooth starting, steady idle, and full power under load.
Also known as:
Top-end gasket, combustion gasket, head-to-barrel gasket, cylinder-head seal, engine top gasket, combustion chamber seal, head face gasket, barrel gasket.
Fits Models:
JAP 3, JAP 4
Product Specifications
| L&S Part No. | 21635 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Villiers |
| OEM No. | 21635 |
| Unit of Sale | 1 |
| Applications | JAP 3, JAP 4, JAP3, JAP4 |
| Machine Type | Engines |
| Fits Brands | JAP |
| Fits Models | JAP 4, 3 |
