Fuel Filter Element – Fits Yanmar 6LY Series Marine Diesel Engines (Replaces 41650-502330, 41650-502330-12)
Fuel Filter Element – Fits Yanmar 6LY Series Marine Diesel Engines (Replaces 41650-502330, 41650-502330-12) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
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Fuel Filter Element – Fits Yanmar 6LY Series Marine Diesel Engines (Replaces 41650-502330, 41650-502330-12) is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket Fuel Filter Element – Fits Yanmar 6LY Series Marine Diesel Engines (Replaces 41650-502330, 41650-502330-12) is engineered to protect your fuel system from contaminants. It is designed for direct compatibility with a wide range of Yanmar 6LY series marine diesel engines, including the 6LY-UTE, 6LY-STE, 6LYA-UTE, 6LYA-STE, 6LY2A-STP, 6LY3-UTP, 6LY3-STP, and 6LY3-ETP models.
It serves as a direct replacement for Yanmar part numbers 41650-502330 and 41650-502330-12, and is also cross-compatible with the aftermarket Kel'thuzad 41650-502330 filter.
- Features a simple spin-on design for quick installation.
- Built to meet or exceed OEM specifications for filtration and performance.
- Effectively filters diesel fuel to protect sensitive engine components.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yanmar | 41650-502330 | Superseded by 41650-502330-12 |
| Yanmar | 41650-502330-12 | Current OEM part number. |
| Kel'thuzad | 41650-502330 | Aftermarket compatible part. |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Yanmar Engines: This filter element is confirmed to fit various 6LY series engines. Please verify your specific model against this list.
| Brand | Model | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|
| Yanmar | 6LY-UTE | 4-Stroke | 41650-502330-12 | Supersedes 41650-502330 |
| Yanmar | 6LY-STE | 4-Stroke | 41650-502330-12 | Supersedes 41650-502330 |
| Yanmar | 6LYA-UTE | 4-Stroke | 41650-502330-12 | Supersedes 41650-502330 |
| Yanmar | 6LYA-STE | 4-Stroke | 41650-502330-12 | Supersedes 41650-502330 |
| Yanmar | 6LY2A-ST(E)(P) | 4-Stroke | 41650-502330-12 | Supersedes 41650-502330 |
| Yanmar | 6LY3-UTP | 4-Stroke | 41650-502330-12 | Supersedes 41650-502330 |
| Yanmar | 6LY3-STP | 4-Stroke | 41650-502330-12 | Supersedes 41650-502330 |
| Yanmar | 6LY3-ETP | 4-Stroke | 41650-502330-12 | Supersedes 41650-502330 |
Technical Specs
- Product Type
- Fuel Filter Element
- Installation
- Spin-on
- Fuel Type
- Diesel
- Connection
- Direct mount to filter housing
- Dimensions
- 14.5 x 11.5 x 12.0 cm
- Weight
- 454 g (16 ounces)
- Fitting Type
- Threaded
- Other Technical Attributes
- Direct-fit aftermarket replacement part
What’s in the Box
- 1 x Fuel Filter Element (41650-502330-12)
Installation Notes
- Ensure the engine is completely cool and the fuel supply valve is closed.
- Place a drain pan under the existing fuel filter to catch any spills.
- Using an appropriate filter wrench, turn the old filter counter-clockwise to loosen and remove it.
- Clean the filter mounting base on the engine, ensuring the sealing surface is free of old gasket material and debris.
- Apply a thin layer of clean diesel fuel or motor oil to the gasket of the new filter.
- Carefully screw the new filter onto the housing by hand until the gasket makes contact.
- Tighten the filter an additional 3/4 to one full turn by hand. Do not overtighten.
- Open the fuel supply valve and prime the fuel system according to your engine manufacturer's instructions.
- Start the engine and check carefully for any leaks around the filter. If leaks are present, stop the engine immediately and re-check the installation.
Troubleshooting & FAQ
How do I know when to replace my fuel filter?
Refer to your Yanmar engine's service manual for the recommended replacement interval, typically based on operating hours or annually. Signs that a filter needs changing include engine hesitation, loss of power, or difficulty starting.
What are the signs of a clogged or failing fuel filter?
Common symptoms include sputtering at high speeds, stalling under load, reduced engine performance, and increased fuel consumption. In severe cases, the engine may not start at all.
Is this filter compatible with gasoline engines?
No, this filter is specifically designed for use with diesel fuel in the listed Yanmar marine diesel engines. Do not use it with gasoline.
Can I install this filter myself?
Yes, changing a spin-on fuel filter is a common maintenance task for boat owners with basic mechanical skills. However, if you are unsure about the procedure, we recommend consulting a professional marine mechanic.
Will using this aftermarket part void my engine's warranty?
In many regions, manufacturers cannot legally void a warranty simply because you used an aftermarket part. However, if the aftermarket part is proven to be defective and causes damage, the warranty claim for that specific failure may be denied. Our filters are built to meet or exceed OEM specifications to ensure reliable performance.
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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