Description
Overview:
Big End Shells Undersize 020 for JAP 5 engines are genuine Villiers OEM bearing shells designed to restore correct clearances on classic JAP 5 petrol engines. Manufactured from durable bearing-grade materials for reliable oil film support, they replace worn big-end shells on the connecting rod to reduce friction, protect the crankpin and stabilise oil pressure. The 0.020 in (0.51 mm) undersize suits crankshafts that have been reground to twenty‐thou undersize. Supplied as unused vintage stock, they may show light tarnishing from age, but performance is unaffected. A precise fit and factory geometry help maintain smooth running and longevity after rebuild. Villiers reference 18473/020. Genuine Part. Suitable for JAP 5/JAP5 restorations where an accurate, period‐correct repair is required.
Key Features:
- Genuine Villiers OEM Part for assured fit and compatibility with JAP 5 engines
- 0.020 in (0.51 mm) undersize for use with reground crank journals to twenty‐thou
- Restores correct oil clearance, supporting oil pressure and smooth running
- Durable materials resist wear and scoring under mixed-load operation
- Accurate machining for consistent bearing geometry across the shell surface
- Direct replacement design for straightforward fitting with standard workshop tools
- Helps reduce knock, vibration and excessive crankpin wear after overhaul
- Unused vintage stock; cosmetic tarnish possible, function remains intact
- Suitable for classic engine rebuilds where authenticity and reliability matter
Typical Applications:
Used during the rebuild of JAP 5 petrol engines after crankshaft regrind to 0.020 in (0.51 mm) undersize. Ideal for vintage engine restorations, periodic overhauls, and returning classic machinery to dependable service in light industrial, agricultural, and heritage equipment settings.
Also known as:
Big-end bearings, con-rod bearings, connecting rod shells, crankpin bearings, rod-end shells, bearing liners, big-end inserts, engine bearing shells.
Fits Models:
JAP 5, JAP5
Product Specifications
| L&S Part No. | 18473/020 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Villiers |
| OEM No. | 18473/020 |
| Unit of Sale | 1 |
| Applications | JAP 5, JAP5 |
| Machine Type | Engines |
| Fits Brands | JAP |
| Fits Models | JAP 5 |
