Turbo Gasket – Fits Yanmar 4LH, 4LHA, 6LP Series (Replaces 128300-13230)
Turbo Gasket – Fits Yanmar 4LH, 4LHA, 6LP Series (Replaces 128300-13230) 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
Turbo Gasket – Fits Yanmar 4LH, 4LHA, 6LP Series (Replaces 128300-1...
Product Details
Designed for Yanmar marine diesel engines, this precision-engineered Turbo Gasket provides a reliable seal between the turbocharger and manifold. It is compatible with multiple Yanmar engine families including the 4LH, 4LHA, and 6LP series marine diesel engines.
This part is a direct replacement for Yanmar part number 128300-13230.
- Engineered for an OEM-level fit and function.
- Compression gasket fitting type ensures a tight seal.
- Direct replacement for a hassle-free installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yanmar | 128300-13230 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket is designed for a wide range of Yanmar marine diesel engines.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yanmar | 4LH-DTE | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LH-DTZ | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LH-HT | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LH-HTE | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LH-HTZ | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LH-HTZAY | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LH-ST | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LH-STE | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LH-STZ | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LH-STZAY | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LH-TE | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LH-UT | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LH-UTZ | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LH-UTZAY | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LH-WST | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LH-WSTZY | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LHA-DTE | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LHA-DTP | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LHA-DTZE | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LHA-DTZP | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LHA-HTE | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LHA-HTP | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LHA-HTZE | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LHA-HTZP | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LHA-STE | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LHA-STP | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LHA-STZE | 4-Stroke | 128300-13230 | |||
| Yanmar | 4LHA-STZP | 4-Stroke | 128300-13230 | |||
| Yanmar | 6LP-DT | 4-Stroke | 128300-13230 | |||
| Yanmar | 6LP-DTE | 4-Stroke | 128300-13230 | |||
| Yanmar | 6LP-DTZE | 4-Stroke | 128300-13230 | |||
| Yanmar | 6LP-DTZE1 | 4-Stroke | 128300-13230 | |||
| Yanmar | 6LP-DTZY | 4-Stroke | 128300-13230 | |||
| Yanmar | 6LP-ST | 4-Stroke | 128300-13230 | |||
| Yanmar | 6LP-STE | 4-Stroke | 128300-13230 | |||
| Yanmar | 6LP-STZE | 4-Stroke | 128300-13230 | |||
| Yanmar | 6LP-STZE1 | 4-Stroke | 128300-13230 | |||
| Yanmar | 6LP-STZY | 4-Stroke | 128300-13230 | |||
| Yanmar | 6LP-STZYJ | 4-Stroke | 128300-13230 |
Technical Specs
- Product Type
- Turbo Gasket
- Installation
- Direct Replacement
- Fuel Type
- Diesel
- Fitting Type
- Compression Gasket
- Dimensions
- 10.1 x 10.1 x 0.1 (L x W x H)
- Other Technical Attributes
- OEM-level fit and function
What’s in the Box
- 1x Gasket Silencer (128300-13230)
Installation Notes
- Ensure the engine is off and completely cool before beginning work.
- Carefully remove the old turbo gasket. Clean both the manifold and turbocharger mounting surfaces thoroughly to remove any old gasket material or carbon buildup.
- Place the new gasket into position, ensuring it aligns perfectly with the bolt holes.
- Reinstall the turbocharger and tighten the mounting bolts to the engine manufacturer’s specified torque settings and sequence.
- Once installed, start the engine and carefully check for any exhaust leaks around the new gasket.
Troubleshooting & FAQ
How do I know if my turbo gasket is failing?
Common signs include a distinct hissing sound from the engine bay, a noticeable loss of turbo boost or engine power, reduced fuel efficiency, and visible black soot tracks around the turbocharger to manifold connection.
Can I reuse my old turbo gasket?
No. Turbo gaskets are designed as single-use, crush-style components. Reusing an old gasket will almost certainly lead to an improper seal, resulting in dangerous exhaust leaks and poor performance.
Is this gasket compatible with all Yanmar 4LH engines?
This gasket fits a majority of models within the Yanmar 4LH, 4LHA, and 6LP series. However, you should always confirm compatibility by checking the specific model against our list and verifying that your original part number is 128300-13230.
What is the recommended replacement interval for this gasket?
There is no standard service interval for a turbo gasket. It should be replaced every time the turbocharger is removed for maintenance or if any signs of failure or leakage are detected.
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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