Description
Overview:
This O-Ring (MPN 114250-01380) is a rubber sealing ring used on Yanmar small diesel engines to maintain a gas- and fluid-tight seal at the cylinder head area. It is sized for a precise fit on engines such as the Yanmar L48N5SJ1 and L48, helping to prevent oil, fuel, coolant, or combustion gas leaks that can reduce performance or cause damage. Made from durable engine-grade rubber, it withstands typical operating temperatures and vibration in compact plant and garden machinery. Typical uses include engines fitted to mixers, generators, pumps, compaction equipment, and light construction tools. Supplied to match the correct profile and groove fit, it supports reliable reassembly during cylinder head service. Dimensions: thickness approx. 2 mm (0.08 inches); width approx. 4.4 mm (0.17 inches).
Key Features:
- Designed to seal the cylinder head interface on Yanmar L48-series engines for dependable leak prevention
- Durable rubber construction suited to engine environments with heat and vibration
- Precision sizing to match the specified groove for a secure, stable fit
- Helps maintain correct compression and fluid containment for efficient running
- Useful during head removal/refit, rebuilds, or routine maintenance
- Dimensions for reference: thickness 2 mm (0.08 inches), width 4.4 mm (0.17 inches)
- Simple to install with basic workshop tools; no modifications required
- Supports long service intervals when installed on a clean, undamaged seat
- Compatible with common Yanmar L48 applications in construction and garden machinery
Typical Applications:
Used when servicing or rebuilding Yanmar L48-family engines, especially during cylinder head removal, decarbonising, gasket replacement, or leak diagnosis. Ideal for restoring sealing integrity on engines powering mixers, generators, water pumps, compactors, and similar compact machinery.
Also known as:
O-ring seal, sealing ring, gasket ring, rubber seal, cylinder head seal, ring gasket, engine O-ring.
Fits Models:
L40AE-S, L40AES, L48, L48N-S, L48N5SJ1, L48NS
Alternate Part Numbers:
114250-01380, 11425001380
Product Specifications
| L&S Part No. | 114250 01380 |
|---|---|
| Manufacturer | Yanmar |
| OEM No. | 114250-01380 |
| Unit of Sale | 1 |
| Applications | L40AE-S, L40AES, L48, L48N-S, L48N5SJ1, L48NS |
| Machine Type | Engines |
| Fits Brands | Yanmar |
| Fits Models | L48N-S (Mixer) | L40AE-S (Mixer) |
