Description
Overview:
The Villiers Breather Valve Ball (5/16 in / approx. 7.94 mm) is a small, precision steel ball used in the crankcase breather assembly of classic Villiers engines. As the moving element in the one‐way breather, it helps control ventilation and prevent excess pressure build‐up, supporting smoother running and reduced oil mist. Made to original specifications as a Genuine Villiers part (MPN: EM2161), it is suitable for vintage engines such as the MK15 and MK7 found in garden machinery, small plant, and stationary equipment. Supplied singly for accurate replacement, it is ideal when refurbishing an original breather or restoring an engine to factory performance using authentic components.
Key Features:
- Genuine Villiers part for correct fit and function (MPN: EM2161)
- Precision steel ball for dependable sealing and consistent breather action
- Helps prevent crankcase pressure build‐up and oil leaks
- Diameter: 5/16 in (approx. 7.94 mm) to match original specification
- Durable construction for long service life in vintage engines
- Suitable for routine maintenance or full restorations
- Supplied individually for targeted replacements without waste
- Unused old‐stock vintage item; minor tarnish or age marks may be present
Typical Applications:
Used in the breather valve of classic Villiers engines to regulate crankcase ventilation on equipment such as mowers, rotavators, generators, pumps, and light construction machinery. Commonly installed during engine overhauls, leak cures, or preventative maintenance to restore correct breathing and stable idle.
Also known as:
Breather ball, crankcase breather ball, breather check ball, valve ball for breather assembly, engine breather one‐way ball.
Fits Models:
MK15, MK7
Alternate Part Numbers:
EM2161
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