Description
Overview:
The Conrod Small End Bush is a precision-machined bronze sleeve designed for the JAP 4F Industrial Engine. Fitted into the small end of the connecting rod, it supports the gudgeon pin (wrist pin), helping to maintain correct alignment and reduce friction and wear under load. As a Genuine Jap component with MPN 17421, it offers the right geometry and material specification for dependable service in 4F engines used on plant and machinery. Suitable for routine maintenance or full overhauls, this bush helps restore smooth piston motion, stable clearances, and reliable lubrication at the pin-to-rod interface. Supplied as unused old stock, the part may show cosmetic ageing such as light tarnish, which does not affect performance once correctly installed in the conrod.
Key Features:
- Genuine Jap OEM part (MPN 17421) for assured compatibility with JAP 4F engines
- Durable bronze construction for good load capacity, wear resistance, and heat stability
- Precise small-end location to support the gudgeon pin and maintain correct running clearances
- Helps reduce friction, noise, and vibration, supporting engine efficiency and longevity
- Press-fit design suited to standard workshop practices; sizing/finish may be completed after fitting by a competent engineer
- Unused vintage stock; minor surface tarnish possible, with no impact on service performance
- Reliable choice for repairs, rebuilds, and preventative maintenance on industrial plant
Typical Applications:
Used during servicing or rebuilds of JAP 4F industrial engines found on site equipment such as generators, pumps, lighting sets, mixers, compactors, and other stationary or portable plant. Ideal when restoring correct pin-to-rod alignment, addressing small-end wear, or improving engine smoothness and service life in daily trade or workshop use.
Also known as:
Conrod bush, connecting rod small-end bush, small end bearing bush, little-end bush, gudgeon pin bush, piston pin bush, wrist pin bush.
Fits Models:
4F
Alternate Part Numbers:
17421
Product Specifications
| L&S Part No. | 17421 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Jap |
| Unit of Sale | 1 |
| Applications | 4F |
| Machine Type | Engines |
| Fits Brands | JAP |
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