Description
Overview:
The Rocker Cover Gasket for Yanmar small diesel engines is a Non Genuine Part designed to seal the rocker (valve) cover and prevent oil leaks. Made from a durable, oil-resistant rubber compound, it provides a consistent, compressible seal around the cover perimeter to maintain crankcase containment and clean running. It is suitable for compact plant and garden machinery powered by Yanmar L-series engines, such as generators, plate compactors, pumps, and mixers. This gasket is a direct replacement for OEM number 114250-11310 and is supplied under MPN 320 053. It is a practical service item for routine maintenance or leak repair on engines like the Yanmar L40 and L48, helping restore reliability without the cost of a full overhaul.
Key Features:
- Non Genuine replacement for Yanmar L-series engines; replaces OEM 114250-11310
- Oil-resistant rubber construction for dependable sealing and long service life
- Helps stop oil seepage and misting from the rocker/valve cover
- Stable sealing under heat and vibration typical of single-cylinder diesel engines
- One-piece design for straightforward fitting and alignment
- Compatible with multiple L-series models for broad fleet coverage
- Suitable for routine maintenance or leak rectification without special tools
- Clean, precise edges to seat neatly in the cover groove and on the head
- Supports engine efficiency by maintaining correct crankcase pressure and oil control
- Practical choice for workshops, site repairs, and DIY users
Typical Applications:
Used during service or repair of Yanmar-powered machinery including plate compactors, generators, water pumps, cement mixers, pressure washers, and small agricultural or garden equipment. Ideal when a rocker cover has been removed for valve clearance checks or when oil leakage is seen around the cover perimeter, restoring a clean, tight seal.
Also known as:
Valve cover gasket, rocker box gasket, tappet cover gasket, cam cover gasket, cylinder head cover seal, rocker cover seal, top cover gasket.
Fits Models:
170F, 178F, L40, L40AE, L48, L60, L60AE, L70
