Description
Overview:
The Ring Set +040 for Villiers MK40 is a genuine vintage spare part for restoring cylinder sealing and oil control in classic Villiers single-cylinder engines. Made from durable materials suited to high-temperature engine use, the rings replace worn items to recover compression, reduce blow-by, and improve starting and running quality. The +0.040 inch oversize (approximately +1.02 mm) is intended for use with a rebored MK40 cylinder, ensuring correct clearances and reliable operation when the bore has been machined. Well suited to tradespeople, workshop rebuilders, and DIY users caring for older machinery, this set helps extend the service life of equipment powered by the Villiers MK40. Genuine Villiers quality supports proper fit and function in vintage engines used across garden and light construction tools.
Key Features:
- Genuine Villiers part for assured compatibility with the MK40
- +0.040 inch oversize (+1.02 mm) for use after cylinder rebore
- Restores compression and helps reduce smoke and oil consumption
- Improves starting, power delivery, and overall engine efficiency
- Durable construction suitable for the thermal and mechanical loads of combustion
- Designed to seat correctly when installed with proper clearances and honing
- Helps reduce blow-by and stabilise idle and running performance
- Suitable for routine rebuilds or full restorations of vintage equipment
- Easy to fit for competent users with standard engine tools and gauges
- Vintage stock; cosmetic tarnish may be present without affecting function
Typical Applications:
Used during overhaul of Villiers MK40 engines in classic lawn and garden machinery, small generators, pumps, and light site equipment. Ideal after a rebore or when symptoms include low compression, difficult starting, visible exhaust smoke, or high oil use. Common in maintenance, restoration, and preservation of vintage plant where reliable sealing is required.
Also known as:
Piston ring set, engine ring kit, cylinder rings, ring pack, +40 thou rings, 40 thou oversize rings, oversize piston rings for rebored cylinders, compression and oil-control rings for vintage Villiers engines.
Fits Models:
MK40
Product Specifications
| L&S Part No. | MK40RS40 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Villiers |
| OEM No. | MK40RS40 |
| Unit of Sale | 1 |
| Applications | MK40 |
| Machine Type | Engines |
| Fits Brands | Villiers |
| Fits Models | MK40 |
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