Description
Overview:
The Gudgeon Pin for Jap Model 4/3 Industrial Engine is a precision steel pin that links the piston to the connecting rod at the small end, ensuring smooth reciprocating motion and reliable load transfer. This Genuine Jap part (OEM No. 9902) is engineered for correct fit and operation in JAP 4 and JAP4 industrial engines. Its durable steel construction and accurately finished surfaces help minimise wear and maintain alignment under sustained use. Supplied as unused old stock, it can show storage-related tarnishing or light marks that do not affect performance. Ideal for routine overhauls, rebuilds, or restoring vintage equipment, it helps maintain engine efficiency, reduces the risk of piston slap, and supports consistent compression and power delivery in hard-working industrial applications.
Key Features:
- Genuine Jap part for assured compatibility and reliability (OEM No. 9902)
- Durable steel construction designed for long service life in industrial duty
- Precision-machined surfaces to promote smooth operation and reduced wear
- Direct replacement to OEM specification for JAP 4/JAP4/Model 4/3 engines
- Helps maintain piston-to-rod alignment, aiding consistent compression and power
- Suitable for rebuilds and restorations of classic JAP industrial engines
- Unused old stock; may show tarnish or storage marks with no impact on function
- Supports dependable engine operation when replacing a worn or scored pin
Typical Applications:
Used during top-end rebuilds, piston replacement, or when addressing wear, rattle, or scoring at the small end. Common in stationary industrial engines found on pumps, compressors, generators, and site equipment. Ideal for keeping legacy JAP engines in service with parts that match original tolerances and function.
Also known as:
Piston pin, wrist pin, piston wrist pin, little-end pin, small-end pin, piston pivot pin. These terms describe the same component that carries the piston on the connecting rod and controls the pivot point at the piston's small end.
Fits Models:
JAP 4, JAP4, Model 4/3
Alternate Part Numbers:
9902
Product Specifications
| L&S Part No. | 9902 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Jap |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | JAP |
| Key Features | - Genuine Jap part for JAP 4/Model 4/3 engines - Durable steel construction for long service life - Precision-machined surfaces reduce wear - Direct replacement to OEM specification - Suitable for rebuilds and restorations of JAP engines |
| Fits Models | JAP 4, 3 |
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