Yanmar 121450-11310 Valve Cover Gasket – OEM Replacement for 3GM Series Marine Engines The Yanmar 121450-11310 Valve Cover Gasket is a high-quality OEM replacement gasket designed for Yanmar 3GM-series marine diesel engines , including 3GM, 3GM30, 3GM30F, 3GMD , and related models. It provides a tight, oil-resistant seal between the valve cover and cylinder head, preventing leaks and protecting internal components from contamination. Built from durable rubber/composite materials , this gasket ensures long-lasting performance under marine conditions. It’s an essential part for top-end service, valve adjustments, or engine rebuilds , helping maintain clean, efficient, and reliable engine operation. ⚙️ Compatibility Compatible with the following Yanmar marine engines: 3GM 3GM30 3GM30F 3GM30YEU 3GM30FC 3GMD 3GMD-YEU (Always verify your engine model and serial number before ordering.) 📦 Technical Details Specification Detail Part Number 121450-11310 Type Valve Cover (Bonnet) Gasket Material Rubber / composite for oil resistance Condition New, OEM replacement Compatibility Yanmar 3GM-series engines 💡 When to Replace Oil leaks around the valve cover Oil residue on cylinder head or block During valve adjustments, top-end service, or rebuilds ✅ Why Choose This OEM Replacement Gasket Perfect fit designed to meet Yanmar specifications High-quality rubber/composite materials for long service life Cost-effective alternative to OEM gaskets Simple installation with basic tools 🛒 Available at MarinePartSystem Order the Yanmar 121450-11310 Valve Cover Gasket (OEM Replacement) today from MarinePartSystem , your trusted supplier of Yanmar marine engine parts.
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