Description
Overview:
The Exhaust Valve EM855 is a genuine Villiers component designed for the Villiers MK40 engine and also used on the F15. Built from heat‐resistant steel, it controls exhaust gas flow out of the combustion chamber and maintains a reliable seal against the valve seat, supporting smooth running, compression, and power output. This part is suited to classic stationary engines found on older garden machinery and small construction equipment. As unused old stock, the valve may show light tarnishing from age, but this does not affect function. It is a direct replacement for worn or pitted valves and is an essential item when overhauling vintage Villiers engines to restore dependable performance and longevity.
Key Features:
- Genuine Villiers part for assured fit and compatibility
- OEM reference: EM855
- Heat‐treated steel construction for high‐temperature durability and wear resistance
- Correct stem and head geometry for reliable sealing and exhaust flow
- Restores compression and exhaust timing in tired engines
- Suitable for valve lapping to achieve a precise seat
- Unused old stock; cosmetic tarnish possible without impact on performance
- Helps reduce blow‐by and improves starting and running quality
- Ideal for vintage engine maintenance and period‐correct restorations
- Compatible with Villiers MK40 and F15 engines
Typical Applications:
Used during engine rebuilds, top‐end refreshes, and routine maintenance on classic Villiers MK40 and F15 engines powering older mowers, rotavators, pumps, generators, and light plant. Suitable when replacing burnt, bent, or pitted exhaust valves to restore sealing, performance, and reliability.
Also known as:
Exhaust poppet valve, outlet valve, valve head and stem, engine exhaust valve, cylinder head exhaust valve, gas outlet valve, motor exhaust component.
Fits Models:
MK40, F15
Alternate Part Numbers:
872513
Product Specifications
| L&S Part No. | EM855 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Villiers |
| OEM No. | EM855 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | Villiers |
| Key Features | - Genuine Villiers part for MK40 and F15 engines - Heat‐treated steel for high‐temperature durability - Correct geometry ensures reliable sealing and exhaust flow - Direct replacement for worn or pitted valves - Suitable for vintage engine maintenance and restorations |
| Fits Models | MK40 |
Reviews
Ask a Question
Compatibility
Customers also bought
-
![]()
Key Steel (Imperial) Length: 12" Assorted Pack of 20£83.17 £69.31 -
![]()
Flat Bar, Sizes: 20 x 3-6mm - Assorted Pack of 10£83.68 £69.73
Related Products
-
![]()
Key Steel (Imperial) Length: 12" Assorted Pack of 20£83.17 £69.31 -
![]()
Flat Bar, Sizes: 20 x 3-6mm - Assorted Pack of 10£83.68 £69.73
