Valve Cover Gasket – Fits Yanmar 4LH/4LHA Series Marine Diesel Engines (Replaces 119100-11360)
Valve Cover Gasket – Fits Yanmar 4LH/4LHA Series Marine Diesel Engines (Replaces 119100-11360) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Valve Cover Gasket – Fits Yanmar 4LH/4LHA Series Marine Diesel Engi...
Product Details
A high-quality Valve Cover Gasket that creates a reliable seal for Yanmar 4LH and 4LHA series 4-cylinder marine diesel engines, commonly found in models from the 1990s through the 2000s. This gasket prevents oil leaks from the valve cover, ensuring optimal engine performance and cleanliness.
This part is a direct replacement for Yanmar OEM part number 119100-11360.
- Installation Type: Direct OEM replacement
- Key Attributes: Heat and oil resistant for long-lasting performance
- Engine Type: Compatible with diesel fuel systems
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yanmar | 119100-11360 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket is designed for the following Yanmar Marine engine models:
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yanmar | 4LH-DTE | 4-Stroke | 119100-11360 | |||
| Yanmar | 4LH-HTE | 4-Stroke | 119100-11360 | |||
| Yanmar | 4LH-STE | 4-Stroke | 119100-11360 | |||
| Yanmar | 4LH-TE | 4-Stroke | 119100-11360 | |||
| Yanmar | 4LHA-DTE | 4-Stroke | 119100-11360 | |||
| Yanmar | 4LHA-DTP | 4-Stroke | 119100-11360 | |||
| Yanmar | 4LHA-DTZE | 4-Stroke | 119100-11360 | |||
| Yanmar | 4LHA-DTZP | 4-Stroke | 119100-11360 | |||
| Yanmar | 4LHA-HTE | 4-Stroke | 119100-11360 | |||
| Yanmar | 4LHA-HTP | 4-Stroke | 119100-11360 | |||
| Yanmar | 4LHA-HTZE | 4-Stroke | 119100-11360 | |||
| Yanmar | 4LHA-HTZP | 4-Stroke | 119100-11360 | |||
| Yanmar | 4LHA-STE | 4-Stroke | 119100-11360 | |||
| Yanmar | 4LHA-STR | 4-Stroke | 119100-11360 | |||
| Yanmar | 4LHA-STZE | 4-Stroke | 119100-11360 | |||
| Yanmar | 4LHA-STZP | 4-Stroke | 119100-11360 |
Technical Specs
- Product Type
- Valve Cover Gasket
- Installation
- Direct OEM replacement
- Fuel Type
- Diesel
- Dimensions (L × W × H)
- 150 mm × 30 mm × 120 mm
- Weight
- 0.02 kg (0.04 lbs)
- Other Attributes
- Heat and oil resistant
What’s in the Box
- 1 x Valve Cover Gasket (Replaces 119100-11360)
Installation Notes
- Ensure the engine is cool and disconnect the battery before starting.
- Clean the area around the valve cover to prevent debris from entering the engine.
- Carefully remove any components blocking access to the valve cover.
- Unscrew the bolts holding the valve cover in place and gently lift it off.
- Remove the old gasket and thoroughly clean both the valve cover and the cylinder head mating surfaces. Ensure they are free of old gasket material, oil, and grime.
- Place the new gasket into the groove on the valve cover. Ensure it is seated correctly.
- Reinstall the valve cover, tightening the bolts in the sequence and to the torque specifications recommended by the engine manufacturer.
- Reconnect any components that were removed and reconnect the battery.
- Start the engine and check for any signs of oil leaks around the valve cover.
Troubleshooting & FAQ
How do I know if my valve cover gasket is failing?
Common signs of a worn or failed valve cover gasket include visible oil leaks around the top of the engine, a smell of burning oil, a low engine oil level, and a dirty or oil-covered valve cover. If you notice any of these symptoms, the gasket should be inspected and replaced if necessary.
Is any sealant required with this gasket?
This gasket is designed to create a seal on its own. However, it is best practice to consult your engine's service manual. Some manufacturers recommend applying a small amount of RTV sealant at sharp corners or joints, such as where the timing cover meets the cylinder head.
What is the recommended replacement interval for this gasket?
There is no fixed replacement interval for a valve cover gasket. It should be replaced whenever it shows signs of leaking or when performing other engine service that requires removing the valve cover. Its lifespan depends on operating conditions and heat cycles.
Will this gasket fit a Yanmar engine not in the compatibility list?
This gasket is specifically designed for the Yanmar 4LH and 4LHA series models listed. While it may fit other engines, we cannot guarantee it. Always verify the OEM part number (119100-11360) matches your engine's requirements before purchasing.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an 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.
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