Description
Overview:
This Cylinder Head O-Ring is a non-genuine replacement for Yanmar single-cylinder diesel engines, designed to seal the joint at the cylinder head and help maintain correct compression and oil control. Made from durable, heat- and oil-resistant rubber, it provides a consistent seal that resists hardening and deformation in service. It is suitable for common L-series engines used across small plant and machinery, including Yanmar L75 and L90 models. The O-ring sits in the head or barrel groove (depending on engine design) to prevent leakage of combustion gases and oil. Built for reliable performance and straightforward maintenance, it offers a practical, cost-effective option for workshops, hire fleets, and DIY users who need a dependable seal without the premium cost of OEM parts.
Key Features:
- Non Genuine Part engineered to match OEM fit on popular Yanmar L-series engines
- Robust elastomer construction for resistance to heat, oil, diesel, and vibration
- Helps maintain compression and prevents blow-by and oil seepage at the head joint
- Precision moulded to keep round profile and sealing contact under clamping load
- Easy to fit during top-end servicing; no special tools typically required
- Cost-effective alternative that supports routine maintenance schedules
- Direct cross-reference to OEM 114650-01380 for straightforward identification
- MPN: 320 191 for workshop ordering and stock control
Typical Applications:
Used during cylinder head removal and refitting on small diesel engines found in compactors, generators, water pumps, pressure washers, cement mixers, lawn and garden equipment, and other light construction machinery. Ideal for preventing repeat leaks after head service or decarbonising, and for restoring reliable engine sealing on hard-worked plant.
Also known as:
Cylinder head seal ring, head O-ring, head gasket ring, cylinder head sealing ring, top-end seal, engine seal ring.
Fits Models:
L75, L90, L100, 186F, L90AE
Alternate Part Numbers:
114650-01380
Product Specifications
| L&S Part No. | 320 191 |
|---|---|
| Part Type | Non Genuine Part |
| Unit of Sale | 1 |
| Applications | 186F, L100, L75, L90, L90AE |
| Machine Type | Engines |
| Fits Brands | Chinese, Yanmar |
| Fits Models | L90AE |
