Description
Overview:
This exhaust valve is a replacement part for classic Villiers stationary engines, designed to control hot gas flow from the combustion chamber and maintain a proper seal on the exhaust stroke. Built from durable metal with a smooth stem and tulip-style head, it suits restoration and routine maintenance where a worn or burnt valve is affecting performance. Supplied as a single valve for the exhaust side, it is intended for Villiers MK20 and MK25 engines used in lawn and garden machinery, small plant, and other vintage equipment. As unused old stock, it retains original manufacturing quality and may show minor tarnishing or storage marks that do not affect function. A correct-fitting exhaust valve helps restore compression, smooth running, and reliable starting on classic Villiers-powered machines.
Key Features:
- Durable metal construction for heat and wear resistance in the exhaust port
- Correct fitment for Villiers MK20 and MK25 cylinder heads
- Unused old stock with original factory finish; may show storage tarnish only
- Helps restore compression sealing and exhaust flow for smoother running
- Direct replacement for a worn, pitted, or burnt exhaust valve
- Suitable for engine overhauls, decokes, and preventative maintenance
- Precision-ground seating surfaces for consistent sealing when lapped in
- Compatible with standard Villiers valve train components (springs, collets, retainers) already on the engine
- Straightforward installation for competent DIY users and trades with basic engine tools
- Supports longevity of vintage machinery by maintaining correct valve timing and gas exchange
Typical Applications:
Used during rebuilds or repairs of Villiers MK20/MK25 engines powering vintage mowers, cultivators, generators, pumps, and small construction or garden equipment. Ideal when addressing poor compression, difficult starting, misfiring, loss of power, or visible valve face/seat damage. Suitable for restoration projects where original-spec components are preferred.
Also known as:
Exhaust poppet valve, cylinder head exhaust valve, valve head and stem, exhaust outlet valve, replacement valve for exhaust side, MK20/MK25 exhaust component.
Fits Models:
MK20, MK25
Product Specifications
| L&S Part No. | EM 393 |
|---|---|
| Manufacturer | Villiers |
| OEM No. | EM 393 |
| Unit of Sale | 1 |
| Applications | MK20, MK25 |
| Machine Type | Engines |
| Fits Brands | Villiers |
| Fits Models | MK20 |
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