Cylinder Head Gasket – Fits Yanmar 4JH3 Series Diesel (Replaces 129693-01331)
Cylinder Head Gasket – Fits Yanmar 4JH3 Series Diesel (Replaces 129693-01331) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Cylinder Head Gasket – Fits Yanmar 4JH3 Series Diesel (Replaces 129...
Product Details
This Cylinder Head Gasket – Fits Yanmar 4JH3 Series Diesel (Replaces 129693-01331) is engineered for a precise fit on Yanmar 4JH3 series marine diesel engines. It is compatible with various models from 75 to 125 HP, including the 4JH3-TE (75 HP), 4JH3-HTE (100 HP), and 4JH3-DTE (125 HP).
It functions as a direct replacement for Yanmar OEM part number 129693-01331, ensuring reliable sealing and performance.
- Designed for direct replacement installation.
- Built to withstand demanding marine diesel environments.
- Includes one OEM-spec replacement gasket for cylinder head sealing.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yanmar | 129693-01331 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Yanmar | 4JH3-TE | 75 HP | 4-Stroke | 129693-01331 | |
| Yanmar | 4JH3-HTE | 100 HP | 4-Stroke | 129693-01331 | |
| Yanmar | 4JH3-DTE | 125 HP | 4-Stroke | 129693-01331 | |
| Yanmar | 4JH3-TCE | 4-Stroke | 129693-01331 | Cited by Marine Energy |
Technical Specs
- Product Type
- Cylinder Head Gasket
- Installation
- Direct replacement
- Fuel Type
- Diesel
- Dimensions
- 43.55" L x 19.0" W x 0.5" H
- Warranty
- Varies by supplier (typically 12 months)
- Other Technical Attributes
- OEM-spec replacement gasket for cylinder head sealing
What’s in the Box
- 1 x Cylinder Head Gasket (129693-01331)
Installation Notes
- Disconnect the battery and allow the engine to cool completely before starting work.
- Drain the engine coolant and disconnect all hoses, wiring, and components attached to the cylinder head.
- Carefully remove the cylinder head bolts in the reverse order of the manufacturer's tightening sequence.
- Clean both the engine block and cylinder head surfaces meticulously. Ensure they are free of old gasket material, oil, and debris.
- Place the new head gasket onto the engine block, ensuring correct orientation with dowel pins. Do not use sealant unless specified by the engine manufacturer.
- Carefully lower the cylinder head into place.
- Install and tighten the head bolts in the sequence and to the torque specifications recommended in your engine's service manual. This is critical for a proper seal.
- Reconnect all components and refill the cooling system.
Troubleshooting & FAQ
How do I confirm this gasket fits my Yanmar engine?
This gasket is for the 4JH3 series. Please verify your exact model (e.g., 4JH3-TE, 4JH3-HTE) and cross-reference the OEM part number 129693-01331. Check the compatibility table and your engine's service manual to ensure a match.
What are the signs of a faulty head gasket?
Common symptoms include engine overheating, loss of power, white smoke from the exhaust (coolant burning), milky or frothy engine oil, or external coolant/oil leaks from the seam between the cylinder head and block.
Is any gasket sealant or adhesive required for installation?
Generally, modern head gaskets like this one are designed to be installed dry. Using sealants can interfere with the gasket's ability to seal properly. Always follow the specific instructions in your Yanmar service manual.
How often should a head gasket be replaced?
A head gasket is not a routine maintenance item. It should only be replaced when it fails or during a complete engine overhaul. Its lifespan depends on operating conditions, maintenance, and proper installation.
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.
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