Cylinder Head Gasket – Fits Yanmar 4JH Series Marine Engines (Replaces 129553-01350)
Cylinder Head Gasket – Fits Yanmar 4JH Series Marine Engines (Replaces 129553-01350) 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 4JH Series Marine Engines (Repla...
Product Details
This high-quality Cylinder Head Gasket – Fits Yanmar 4JH Series Marine Engines (Replaces 129553-01350) is designed to create a perfect seal between the cylinder head and the engine block. It is engineered for a precise fit on a range of Yanmar Marine 4JH Series 4-stroke diesel engines, including the 4JH-DTE, 4JH-E, 4JH-HTE, and 4JH-TE models, among other variants.
This aftermarket part is a direct replacement for Yanmar part number 129553-01350 and Poseidon Marine RM129553-01350.
- Installation Location: Mounts between the cylinder head and engine block.
- Material Construction: Made from a durable multi-layer steel/composite for a reliable, long-lasting seal.
- 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 | 129553-01350 |
| Poseidon Marine | RM129553-01350 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket is designed for various Yanmar marine diesel and industrial/tractor engines.
| Brand | Model | Stroke | OEM Part No. |
|---|---|---|---|
| Yanmar | 4JH-DTE | 4-Stroke | 129553-01350 |
| Yanmar | 4JH-E | 4-Stroke | 129553-01350 |
| Yanmar | 4JH-HTE | 4-Stroke | 129553-01350 |
| Yanmar | 4JH-HTZ | 4-Stroke | 129553-01350 |
| Yanmar | 4JH-HTZAE | 4-Stroke | 129553-01350 |
| Yanmar | 4JH-TE | 4-Stroke | 129553-01350 |
| Yanmar | 4JH-TZ | 4-Stroke | 129553-01350 |
| Yanmar | 4JH-TZ1 | 4-Stroke | 129553-01350 |
| Yanmar | 4JH-TZ2 | 4-Stroke | 129553-01350 |
| Yanmar | 4JH-TZA | 4-Stroke | 129553-01350 |
| Yanmar | 4JH-TZAE | 4-Stroke | 129553-01350 |
| Yanmar | 4JH-TZAY | 4-Stroke | 129553-01350 |
| Yanmar | 4JHE | 4-Stroke | 129553-01350 |
| Yanmar | 4JHL-HTN | 4-Stroke | 129553-01350 |
| Yanmar | 4JHL-N | 4-Stroke | 129553-01350 |
| Yanmar | 4JHL-TN | 4-Stroke | 129553-01350 |
| Yanmar | 4JHYE | 4-Stroke | 129553-01350 |
| Yanmar | 4JHZ | 4-Stroke | 129553-01350 |
| Yanmar | 4JHZAE | 4-Stroke | 129553-01350 |
| Yanmar | 4JH2 (B)E | 4-Stroke | 129553-01350 |
| Yanmar | 4JH2 T(B)E | 4-Stroke | 129553-01350 |
| Yanmar | 4JH2 HT(B)E | 4-Stroke | 129553-01350 |
| Yanmar | 4JH2 DT(B)E | 4-Stroke | 129553-01350 |
Note: This gasket does not fit Yanmar 4JH2UT(B)E engines.
| Brand | Model | Stroke | OEM Part No. |
|---|---|---|---|
| Yanmar | 4TN78TL-DB | 4-Stroke | 129553-01350 |
| Yanmar | 4TN78TL-RB | 4-Stroke | 129553-01350 |
| Yanmar | 4TNA78TL-DB | 4-Stroke | 129553-01350 |
| Yanmar | 4TNA78TL-DBW | 4-Stroke | 129553-01350 |
| Yanmar | 4TNA78TL-RB | 4-Stroke | 129553-01350 |
| Yanmar | 4TNA78TL-RBW | 4-Stroke | 129553-01350 |
Technical Specs
- Product Type
- Cylinder Head Gasket
- Installation
- Between cylinder head and engine block
- Fuel Type
- Diesel
- Housing Material
- Multi-layer steel/composite
- Dimensions
- 40.0" L x 16.0" W x 0.1" H
- Thickness
- 1.4 mm
- Other Technical Attributes
- OEM-quality replacement for Yanmar engines
What’s in the Box
- 1 x Cylinder Head Gasket (129553-01350)
Installation Notes
- Ensure the engine is cool and disconnect the battery. Drain the engine coolant completely.
- Remove the exhaust and intake manifolds, fuel lines, and any other components obstructing the cylinder head.
- Carefully loosen and remove the cylinder head bolts in the sequence recommended by the manufacturer's service manual.
- Lift the cylinder head off the engine block and remove the old gasket.
- Thoroughly clean both the engine block and cylinder head mating surfaces. Ensure they are free of old gasket material, oil, and debris.
- Position the new head gasket correctly on the engine block. Do not use any sealant unless specified by the engine manual.
- Carefully place the cylinder head back onto the block and gasket.
- Install the head bolts and tighten them in the specified sequence and torque stages according to your engine's service manual. This step is critical for a proper seal.
- Reassemble all other components in the reverse order of removal.
- Refill the cooling system, reconnect the battery, and check for leaks after starting the engine.
Troubleshooting & FAQ
How do I know if my head gasket is failing?
Common signs of a blown head gasket include visible coolant leaks from the engine, persistent engine overheating, milky or discolored engine oil (coolant contamination), or white smoke from the exhaust (burning coolant).
Does this gasket require any sealant during installation?
No, this multi-layer steel (MLS) gasket is designed for a dry installation. Applying sealants can interfere with its ability to seal correctly. Always follow the specific instructions in your engine's service manual.
Will this fit a Yanmar 4JH2UT(B)E engine?
No, this gasket is explicitly not compatible with the Yanmar 4JH2UT(B)E model. Please verify your exact engine model number before purchasing to ensure correct fitment.
What is the correct torque sequence for the head bolts?
The torque values and tightening sequence are specific to your Yanmar 4JH engine model and are critical for a lasting repair. You must refer to the official Yanmar service manual for your engine to get the correct specifications.
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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