Description
Overview:
This Rocker Arm Spring is a Genuine Villiers component for MK‐series industrial engines, including the MK10 and MK12. Made from high‐grade spring steel with a plain steel finish, it maintains the correct tension on the rocker arm so the valve gear operates smoothly and consistently. By holding stable pressure in the valve train, it helps reduce noise, wear, and the risk of valve float under load. Suitable for small industrial and garden machinery powered by Villiers engines, it is a direct, like‐for‐like replacement to original specification M1047X3. As unused old‐stock, the spring may show light tarnish or storage marks, but this does not affect function. A practical choice for routine servicing or full top‐end rebuilds where dependable, OE‐quality parts are required.
Key Features:
- Genuine Villiers OEM part for accurate fit and function (M1047X3)
- Tough spring‐steel construction for long service life
- Maintains correct rocker arm tension for consistent valve timing
- Helps reduce valvetrain noise and premature wear
- Stable performance across heat cycles and engine speeds
- Direct replacement to original spec; no modifications required
- Straightforward to fit with standard hand tools
- Suitable for single‐spring replacement or full overhaul work
- Unused old‐stock: performance part with possible cosmetic tarnish only
Typical Applications:
Used during maintenance or rebuild of Villiers MK‐series engines in site equipment, generators, pumps, compact plant, and certain garden machinery. Ideal when the original spring has weakened, broken, or when rocker gear shows inconsistent movement, excessive noise, or lash changes. Supports reliable starting, smoother running, and sustained performance in regular trade, hire, and DIY use.
Also known as:
Rocker spring, rocker arm tension spring, rocker arm return spring, valve rocker spring, valve gear spring, rocker shaft spring. These terms describe the same function: keeping consistent preload and return on the rocker to stabilise the valve train.
Fits Models:
MK10, MK12, MK15, MK20, MK25
Alternate Part Numbers:
M1047X3
Product Specifications
| L&S Part No. | M1047X3 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Villiers |
| OEM No. | M1047X3 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | Villiers |
| Key Features | - Genuine Villiers OEM part for MK-series engines - Made from high-grade spring steel - Maintains correct rocker arm tension - Direct replacement; no modifications needed - Suitable for MK10, MK12, MK15, MK20, MK25 models |
| Fits Models | MK10 | MK12 | MK20 | MK25 / C25 | MK15 |
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