Description
Overview:
The Valve Collar Top is a Genuine Jap component for JAP Model 4F engines, supplied to OEM specification under part number 16044. Made from durable steel for stability under heat and load, it sits at the top of the valve spring to secure the valve assembly and maintain correct valve train geometry. This part helps prevent valve float and premature wear, supporting smooth running and compression. It is unused old stock from the original manufacturer, so cosmetic tarnishing from storage may be present, but function remains unaffected. Designed specifically for the JAP 4F stationary engine often found in vintage construction, agricultural, and garden machinery, it is a practical replacement for restorations, servicing, and keeping heritage equipment working as intended.
Key Features:
- Genuine Jap part for assured compatibility with JAP 4F engines (OEM 16044)
- Steel construction for strength, heat resistance, and long service life
- Precisely machined seating surfaces to hold the valve spring securely
- Helps maintain correct valve timing, compression, and running efficiency
- Suitable for restoration projects and routine overhaul work on vintage engines
- Unused old stock; may show age-related tarnish that does not affect performance
- Direct-fit design for straightforward replacement with standard workshop tools
- Stable under cyclic loading to reduce risk of valve train noise and wear
- Supports reliable operation in continuous-duty applications common to stationary engines
Typical Applications:
Used on JAP 4F engines fitted to older construction, industrial, and horticultural equipment, such as site mixers, pumps, small generators, and compressors. Ideal when rebuilding cylinder heads, replacing worn valve gear, or addressing valve float and loss of compression. Suitable for preventative maintenance to keep heritage machinery dependable on site or in the workshop.
Also known as:
Valve spring retainer, valve spring cap, top collar, retaining cap, keeper plate, valve top collar, spring seat (upper), valve spring top, cam follower retainer (colloquial).
Fits Models:
JAP Model 4F
Product Specifications
| L&S Part No. | 16044 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Jap |
| Unit of Sale | 1 |
| Machine Type | Engines |
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