Description
Overview:
The Piston Ring Set +040 for Villiers C12 and MK12 engines is a genuine Villiers replacement for worn or damaged rings in small petrol engines commonly found on compact plant and garden machinery. Manufactured from engine‐grade cast iron for stable sealing under heat and load, the set restores cylinder sealing and oil control so the engine starts easily, holds compression, and runs smoothly. The +0.040 in (1.016 mm) oversize suits cylinders that have been rebored or show wear beyond standard size. Supplied as unused old stock, items may show light tarnishing from storage but remain fully serviceable. This OEM set is built for a precise fit and dependable performance, helping extend engine life and maintain reliable operation on C12 and MK12 units.
Key Features:
- Genuine Villiers OEM part for correct fit and performance on C12 and MK12 engines
- +0.040 in (1.016 mm) oversize for use after reboring or where wear exceeds standard size
- Cast iron construction for durable sealing, heat resistance, and long service life
- Restores compression and reduces blow‐by to recover power and fuel efficiency
- Helps control oil consumption and exhaust smoke by re‐establishing ring sealing
- Precision‐ground ring faces for smooth bedding‐in and consistent performance
- Compatible with vintage engines; ideal for sympathetic restorations and regular service work
- Unused old stock; may show minor cosmetic ageing without affecting function
- Supplied as a matched set to replace all piston rings on one piston
- Supports smoother running, easier starting, and reduced emissions when fitted correctly
Typical Applications:
Used during engine overhauls, top‐end refreshes, or repairs on Villiers C12 and MK12 engines fitted to lawn and garden machines, light construction tools, generators, pumps, mixers, and similar equipment. Suitable when cylinders are rebored to +0.040 in (1.016 mm) or when existing rings are worn, broken, or causing low compression.
Also known as:
Piston rings set, cylinder rings, compression and oil control rings, +040 oversize rings, 40‐thou oversize rings (approx. 1.016 mm), engine ring set for Villiers C12/MK12, oversize piston ring kit.
Fits Models:
C12, MK12
Alternate Part Numbers:
C12RS40
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