Description
Overview:
These Big End Shells U/S 040 are precision bearing shells for the connecting rod big end on the Jap Model 5 industrial engine. They provide a smooth, durable bearing surface for the crankshaft journal to rotate on, helping to maintain correct oil film, reduce wear, and keep the engine running smoothly. Manufactured from robust bearing-grade metal, they are sized U/S 0.040 in (approx. 1.02 mm), intended for use with a crankshaft ground 0.040 in undersize. Supplied as a pair to service one conrod, they are a Genuine Jap part with MPN 18473/040, ensuring correct fit and reliable performance on JAP 5 and JAP5 engines. As unused old stock for vintage machinery, they may show light tarnishing or storage dirt, but remain fully functional.
Key Features:
- Genuine Jap OEM part for assured compatibility and quality
- U/S 0.040 in (approx. 1.02 mm) size for re-ground crankpins
- Supplied as a matched pair to service one connecting rod
- Durable construction for long service life under load
- Precision finish to support stable oil film and smooth rotation
- Helps restore oil pressure and reduce big-end knock
- Suitable for vintage engine rebuilds and sympathetic restorations
- New old stock; cosmetic tarnish or storage marks do not affect function
- Clear identification: MPN 18473/040
- Typically fitted during an engine overhaul with standard workshop tools
Typical Applications:
Used during maintenance or complete rebuilds of Jap Model 5 industrial engines to replace worn big-end bearings after crankshaft regrind. Suitable for engines used in plant, agricultural, and stationary equipment where reliability and correct clearance are essential for smooth running and longevity.
Also known as:
Big-end bearings, conrod shells, connecting rod bearings, crankpin bearings, bearing inserts, BE shells, engine big-end shells.
Fits Models:
JAP 5, JAP5
Product Specifications
| L&S Part No. | 18473/040 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Jap |
| OEM No. | 18473/040 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Key Features | - Genuine Jap OEM part for JAP 5 engines - U/S 0.040 in size for re-ground crankpins - Supplied as a matched pair for one conrod - Durable bearing-grade metal construction - Precision finish supports stable oil film |
| Fits Models | JAP 5 |
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