Yanmar Gasket Kit – Fits 6LP & 6LPA Marine Engine Series (Replaces REC040122)
Yanmar Gasket Kit – Fits 6LP & 6LPA Marine Engine Series (Replaces REC040122) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Yanmar Gasket Kit – Fits 6LP & 6LPA Marine Engine Series (Repla...
Product Details
This aftermarket Yanmar Gasket Kit – Fits 6LP & 6LPA Marine Engine Series (Replaces REC040122) is designed for Yanmar 6LP and 6LPA series marine diesel engines. It provides a comprehensive set of gaskets for engine servicing, excluding the cylinder head gasket. It is compatible with models including 6LP-STE, 6LP-STP, 6LP-STZE, 6LP-STZE1, 6LPA-STE, 6LPA-STP, and 6LPA-STZP.
This kit serves as a direct replacement for REC040122 and AM040122 part numbers.
- Includes all essential engine gaskets except for the cylinder head gasket.
- Engineered to meet or exceed OEM specifications for fit and function.
- Ensures a reliable seal for various engine components during maintenance or rebuilds.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Aftermarket | REC040122 |
| Aftermarket | AM040122 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket kit is designed for the following Yanmar engine models.
| Brand | Model | Stroke | Notes |
|---|---|---|---|
| Yanmar | 6LP-STE | 4-Stroke | - |
| Yanmar | 6LP-STP | 4-Stroke | - |
| Yanmar | 6LP-STZE | 4-Stroke | - |
| Yanmar | 6LP-STZE1 | 4-Stroke | - |
| Yanmar | 6LPA-STE | 4-Stroke | - |
| Yanmar | 6LPA-STP | 4-Stroke | - |
| Yanmar | 6LPA-STZP | 4-Stroke | - |
Technical Specs
- Product Type
- Engine Gasket Kit (Cylinder Head Not Included)
- Package Dimensions
- 38.0 cm × 11.0 cm × 4.0 cm
- Weight
- 0.28 kg (0.62 lbs)
- Contents
- Multiple gaskets for 6LP/6LPA engines
- Manufacturer
- Aftermarket
- Compatibility
- Yanmar 6LP and 6LPA marine diesel engines
What’s in the Box
- 1 x Aftermarket Gasket Kit for Yanmar 6LP & 6LPA Series
Installation Notes
- Disconnect the battery and ensure the engine is cool before starting work.
- Drain relevant fluids, such as engine oil and coolant, into appropriate containers.
- Carefully disconnect and remove components to access the old gaskets. Keep track of all fasteners.
- Thoroughly clean all mating surfaces to remove any old gasket material, sealant, or debris.
- Install the new gaskets on clean, dry surfaces. Refer to your service manual for torque specifications and sealant requirements.
- Reassemble all components in the reverse order of removal, tightening fasteners to the specified torque.
- Refill the engine with fresh oil and coolant to the correct levels.
- Reconnect the battery, start the engine, and carefully check for any leaks.
Troubleshooting & FAQ
Does this kit include the cylinder head gasket?
No, this gasket kit is comprehensive for the listed engines but specifically excludes the cylinder head gasket. Please source it separately if needed.
How do I confirm this kit will fit my Yanmar engine?
This kit fits models in the Yanmar 6LP and 6LPA series. Please verify your specific engine model against the compatibility list provided on this page to ensure a perfect match.
What are common signs of a failing engine gasket?
Symptoms of gasket failure include external coolant or oil leaks from the engine, engine overheating, reduced performance or compression, and milky, emulsified engine oil indicating fluid mixing.
Should I use sealant with these gaskets?
Most gaskets in this kit are designed to be installed on clean, dry surfaces without additional sealant. However, always consult your engine’s official service manual for specific instructions and torque specifications for each component.
When should engine gaskets be replaced?
Gaskets should be replaced whenever a component is removed for service, during an engine rebuild, or if there are any signs of leaks or failure. They do not have a fixed time-based replacement interval.
What is the difference between OEM and aftermarket parts?
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.
How fast is shipping and what does it cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
What is the warranty and return policy?
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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