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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