Description
Overview:
The Top Collar for Valve Spring is a Genuine JAP part for classic JAP petrol engines. Made from robust steel, it sits at the top of the valve spring to locate and retain the spring securely, helping to keep valve motion stable and reducing wear in the valve train. Correct support and alignment of the spring are vital for maintaining compression, smooth running, and reliable starting. This collar is designed specifically for JAP 4/3 applications and is suitable for use on JAP 3 and JAP 4 engines often found in older small plant, pumps, mowers, and other light industrial equipment. Marked with OEM No. 16720, it provides an accurate fit that matches the original specification and is well suited to engine servicing, repair, or full rebuilds.
Key Features:
- Genuine JAP part for assured compatibility and reliability (OEM No. 16720)
- Steel construction for strength and long service life in demanding engine environments
- Precision fit for JAP 4/3 applications to maintain correct valve spring position and geometry
- Helps reduce valve train wear, misalignment, and vibration for steadier engine performance
- Suitable for rebuilds and routine maintenance; straightforward to install with standard tools
- Consistent dimensions to replace worn or missing retainers without modification
- Supports efficient running and longevity of JAP 3 and JAP 4 engines
Typical Applications:
Used during valve servicing, top-end refreshes, and full engine rebuilds on JAP 3 and JAP 4 engines. Ideal when replacing a damaged or fatigued spring retainer to restore proper spring seating, improve valve control, and help maintain compression and smooth idle on small machinery and stationary engine setups.
Also known as:
Valve spring retainer, spring collar, valve spring cap, retaining cap, top hat, valve spring keeper. These terms refer to the same component that secures and locates the valve spring at the upper end of the valve assembly.
Fits Models:
JAP 3, JAP 4
Product Specifications
| L&S Part No. | 16720 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | JAP |
| OEM No. | 16720 |
| Unit of Sale | 1 |
| Applications | JAP 3, JAP 4, JAP3, JAP4 |
| Machine Type | Engines |
| Fits Brands | JAP |
| Fits Models | JAP 4, 3 |
