Cylinder Head Gasket – Fits Yanmar 3YM30 Marine Diesel Engines (Replaces 119717-01331)
Cylinder Head Gasket – Fits Yanmar 3YM30 Marine Diesel Engines (Replaces 119717-01331) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Cylinder Head Gasket – Fits Yanmar 3YM30 Marine Diesel Engines (Rep...
Product Details
This aftermarket Cylinder Head Gasket – Fits Yanmar 3YM30 Marine Diesel Engines (Replaces 119717-01331) is engineered for Yanmar's 3.0L (29HP), 3-cylinder, 4-stroke diesel engines manufactured from 2004 to the present.
It serves as a direct replacement for Yanmar OEM part numbers 119717-01331 and 728990-92600.
- Installation requires complete engine disassembly.
- Constructed from durable multi-layer metal suitable for marine environments.
- Designed specifically for 3-cylinder marine diesel engine applications.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yanmar | 119717-01331 | Original OEM part number |
| Yanmar | 728990-92600 | Alternative OEM reference |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket is designed for the specified Yanmar 3YM30 series engine. Verify your model and production year before ordering.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yanmar | 3YM30 | 29 | 4-Stroke | 2004–Present | 119717-01331 | Also referenced as 728990-92600 |
Technical Specs
- Product Type
- Cylinder Head Gasket
- Installation
- Engine Disassembly Required
- Fuel Type
- Diesel
- Housing Material
- Multi-Layer Metal
- Dimensions
- 30.0cm L x 19.5cm W x 0.2cm H
- Other Technical Attributes
- Designed for 3-cylinder marine diesel engines
What’s in the Box
- 1 x Cylinder Head Gasket (119717-01331/728990-92600)
Installation Notes
- Disconnect the battery and completely drain the engine coolant and oil.
- Remove the intake and exhaust manifolds, fuel lines, and any other accessories attached to the cylinder head.
- Loosen and remove the cylinder head bolts following the manufacturer's recommended sequence to prevent head warpage.
- Carefully lift the cylinder head from the engine block. Avoid using pry tools that could damage the mating surfaces.
- Remove the old head gasket and thoroughly clean all carbon, sealant, and debris from both the engine block and cylinder head surfaces.
- Place the new gasket into position, ensuring its orientation is correct. Do not use sealant on a multi-layer metal gasket.
- Carefully reinstall the cylinder head. Install and tighten the head bolts in the specified sequence and to the correct torque values.
- Reassemble all previously removed components, manifolds, and fuel lines.
- Refill the engine with fresh oil and coolant, then check for any leaks before starting.
Troubleshooting & FAQ
How do I know if this gasket fits my engine?
This gasket is specifically designed for the Yanmar 3YM30 marine diesel engine (2004–Present). To ensure compatibility, please verify your engine model and confirm that your existing part number matches either 119717-01331 or 728990-92600.
What are the signs of a failing cylinder head gasket?
Common symptoms include engine overheating, white smoke from the exhaust (indicating coolant is burning), milky or foamy engine oil, a noticeable loss of compression or power, or visible coolant leaks around the cylinder head.
Is any sealant required when installing this gasket?
No. This is a multi-layer metal gasket designed for dry installation. Using additional sealants can interfere with its ability to seal properly and may cause premature failure. Always install it on clean, dry surfaces.
What is the recommended replacement interval for this part?
Cylinder head gaskets are not a routine maintenance item. They are typically replaced only when they have failed or during a major engine overhaul. There is no standard replacement interval.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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