Yanmar 1GM Engine Gasket Set – Genuine OEM (728170-92600)
Yanmar 1GM Engine Gasket Set – Genuine OEM (728170-92600) 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 1GM Engine Gasket Set – Genuine OEM (728170-92600)
Product Details
This is a genuine-quality aftermarket Yanmar 1GM Engine Gasket Set, engineered to meet or exceed OEM specifications for the 1GM marine diesel engine series. It provides a comprehensive solution for engine overhauls or significant repairs, ensuring a reliable seal across all critical components.
This kit serves as a direct replacement for Yanmar OEM part number 728170-92600.
- Includes all necessary gaskets and seals for a complete engine top and bottom end rebuild.
- Manufactured in an ISO 9002 certified facility to ensure quality and reliability.
- Designed for use in marine environments.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yanmar | 728170-92600 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Yanmar | 1GM | 7HP | 4-Stroke | 728170-92600 | Marine Diesel Engine |
Technical Specs
- Product Type
- Complete Engine Gasket Set
- Brand
- Yanmar
- Compatibility
- 1GM Engine Series
- Part Number
- 728170-92600
- Product Height
- 2.0 in
- Product Width
- 21.0 in
- Product Length
- 35.0 in
What’s in the Box
1 x Gasket Set (728170-92600) containing:
- 1 x Gasket, Hydraulic Oil Pump (124240-01882)
- 1 x Gasket, Cylinder Head (128170-01331)
- 1 x Gasket, Timing Cover (128170-01510)
- 1 x Gasket, Oil Pan (128170-01750)
- 1 x O-Ring (105225-02020)
- 1 x Gasket (128170-03070)
- 1 x Gasket, Punch Cover (128170-11310)
- 1 x Gasket (128170-32030)
- 1 x Gasket (128170-42090)
- 1 x Gasket (104211-49160)
- 1 x Gasket, Fuel Lift Pump (121520-01850)
- 1 x Gasket 8, Round (23414-080000)
- 1 x Gasket 10, Round (23414-100000)
- 1 x Gasket 12, Round (23414-120000)
- 1 x O-Ring 1A G-35.0 (24321-000350)
- 1 x Seal Washer 6S (43400-500390)
- 1 x Seal Washer 12S (43400-500450)
- 1 x Seal Washer 24S (43400-500570)
Installation Notes
- Before starting, disconnect the battery and safely drain all engine fluids (oil, coolant).
- Systematically disassemble engine components to access the old gaskets. Label all parts and fasteners to simplify reassembly.
- Thoroughly clean all mating surfaces, ensuring they are free of old gasket material, sealant, oil, and debris.
- Carefully compare each new gasket with its corresponding old one to confirm an exact match in shape and size.
- Install the new gaskets following the engine's service manual. Ensure correct orientation and do not use sealant unless explicitly specified.
- Reassemble all components and tighten bolts to the manufacturer's specified torque sequence and values.
- Refill the engine with fresh fluids, reconnect the battery, and carefully inspect for any leaks before and after starting the engine.
Troubleshooting & FAQ
How do I confirm this gasket set fits my 1GM engine?
This set is specifically designed for the Yanmar 1GM marine diesel engine series. The most reliable method is to verify the part number 728170-92600 is listed for your model. We also strongly recommend comparing the gaskets shown in the product images to your old parts before installation.
What are common signs that my engine gaskets are failing?
Key indicators of gasket failure include external oil or coolant leaks from the engine block, overheating, a loss of compression, or a milky, emulsified appearance in the engine oil, which suggests coolant is mixing with the oil.
Should I use sealant with these gaskets?
These gaskets are designed to seal without the need for additional sealant. However, always defer to your engine's official service manual, as a very thin application of sealant may be recommended in specific locations, such as corner junctions.
When should engine gaskets be replaced?
Gaskets do not have a fixed service interval. They are typically replaced only when a leak is detected, during a partial or complete engine rebuild, or whenever a major component like the cylinder head is removed for service.
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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