In-Line Fuel Filter for Mercury/Mariner 30–200 HP Outboard Engines — Replaces 816296Q03, 816296K2 and 35-816296Q03
In-Line Fuel Filter for Mercury/Mariner 30–200 HP Outboard Engines — Replaces 816296Q03, 816296K2 and 35-816296Q03 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.
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In-Line Fuel Filter for Mercury/Mariner 30–200 HP Outboard Engines ...
In-Line Fuel Filter for Mercury/Mariner 30–200 HP Outboard Engines — Replaces 816296Q03, 816296K2 and 35-816296Q03 is backordered and will ship as soon as it is back in stock.
Product Details
This in-line fuel filter is an aftermarket replacement for selected Mercury and Mariner outboard applications from 30–200 HP. It installs beneath the engine cowl in-line with the existing fuel hose and is intended for applications that specify the replacement references listed below.
Before ordering, compare the part number, fuel-line connection, engine model and serial-number range with your original filter and engine service information. Horsepower alone does not confirm fitment.
- In-line installation under the engine cowl.
- Clear or translucent housing helps allow visual inspection of the filter contents.
- Barbed push-on fuel-line connections.
- Designed for gasoline applications, including commonly used E10 fuel blends.
- Sonically sealed end caps for a sealed filter assembly.
Part Number References
The following numbers are reference numbers used to identify the compatible replacement application. They are not included as separate components.
| Brand or source | Reference number |
|---|---|
| Mercury | 816296Q03 |
| Mercury | 35-816296Q03 |
| Mercury | 35-816296K2 |
| Mercury | 35-164941 |
| Mercury | 35-8162961 |
| Mercury | 35-816296T1 |
| Sierra | 18-7830 |
| Johnson/Evinrude | 398327 |
| Yamaha | 65W-24251-10-00 |
Engine and Model Compatibility
The primary listed application is for selected Mercury and Mariner 2-stroke outboard engines from 30–200 HP. The model and serial-number examples below are provided as application guidance; confirm the exact engine configuration and serial range before installation.
| Brand | Model or application | Rated HP | Stroke | Serial or year condition | Reference number |
|---|---|---|---|---|---|
| Mercury | 30 Jet, 3-cylinder | 30 | 2-Stroke | 0G760300–0T408999 | 816296Q03 |
| Mercury | 30 Jet, 3-cylinder | 30 | 2-Stroke | 0P017000–0P153499 | 816296Q03 |
| Mercury | 40 HP, 3-cylinder | 40 | 2-Stroke | 0G760300–0T979999 | 816296Q03 |
| Mercury | 40 HP, 3-cylinder | 40 | 2-Stroke | 0P017000–0P325499 | 816296Q03 |
| Mercury | 40 HP, 3-cylinder | 40 | 2-Stroke | 0P325500 and newer | 816296Q03 |
| Mercury | 40 HP Jet | 40 | 2-Stroke | 0P094500–0P325499 | 816296Q03 |
| Mercury | 40 HP Jet | 40 | 2-Stroke | 0T178500–0T979999 | 816296Q03 |
| Mercury | 45 HP Jet | 45 | 2-Stroke | 0G760300–0T129554 | 816296Q03 |
| Mercury | 45 HP Jet | 45 | 2-Stroke | 0P017000–0P094499 | 816296Q03 |
| Mercury | 50 HP, 3-cylinder | 50 | 2-Stroke | 0G760300–0T979999 | 816296Q03 |
| Mercury | 50 HP, 3-cylinder | 50 | 2-Stroke | 0P017000–0P325499 | 816296Q03 |
| Mercury | 50 HP, 3-cylinder | 50 | 2-Stroke | 0P325500 and newer | 816296Q03 |
| Mercury | 55 HP, 3-cylinder | 55 | 2-Stroke | 0G760300–0T979999 | 816296Q03 |
| Mercury | 55 HP, 3-cylinder | 55 | 2-Stroke | 0P017000–0P325499 | 816296Q03 |
| Mercury | 60 HP, 3-cylinder | 60 | 2-Stroke | 0G760300–0T979999 | 816296Q03 |
| Mercury | 60 HP, 3-cylinder | 60 | 2-Stroke | 0P017000–0P325499 | 816296Q03 |
| Mercury/Mariner | Other listed applications | 65–200 | 2-Stroke | Primarily 1990s–2000s; verify serial number | 816296Q03 |
Other reference applications: The supplied reference data also lists selected Johnson/Evinrude 2-stroke applications from 25–225 HP using 398327 and selected Yamaha F-series 4-stroke applications using 65W-24251-10-00. Because these applications are not confirmed by the available company catalog record, verify the exact manufacturer part number and physical connection before purchase.
| Brand | Listed models or range | Rated HP | Stroke | Reference number |
|---|---|---|---|---|
| Johnson/Evinrude | Various listed models | 25–225 | 2-Stroke | 398327 |
| Yamaha | F9.9C, FT9.9D, F15A, F20A, F25A, FT25B, F30A, F40B | 9.9–40 | 4-Stroke | 65W-24251-10-00 |
Technical Specifications
- Product type
- In-line fuel filter
- Installation
- Under-cowl, in-line with the fuel hose
- Fuel compatibility
- Gasoline and commonly used ethanol blends, including E10
- Fuel-line connection
- 5/16 inch (approximately 8 mm)
- Connection style
- Push-on barbed connections
- Housing material
- Plastic
- Housing appearance
- Clear or translucent
- Approximate weight
- 30 g (1.06 oz)
- Thread size
- Not applicable; uses barbed connections
- Other attributes
- Sonically sealed end caps and visually inspectable housing
What's in the Box
- 1 × In-line fuel filter
Fuel-line clamps, hoses and other installation hardware are not listed as included components.
Installation Notes
- Turn off the engine and allow it to cool completely. Follow the engine manufacturer's procedure for relieving fuel-system pressure.
- Place an absorbent rag or suitable container beneath the filter to catch residual fuel.
- Note the fuel-flow direction. If an arrow is marked on the filter, it must point toward the engine.
- Loosen the clamps and disconnect the fuel lines from both ends of the old filter.
- Install the replacement filter in the same orientation and confirm that the hose size matches the barbed connections.
- Secure the fuel lines with suitable clamps. Do not overtighten or damage the filter housing.
- Prime the fuel system with the primer bulb, then inspect the filter and all connections for leaks before starting the engine.
Troubleshooting and FAQ
How do I confirm fitment?
Match the number on your existing filter with the reference numbers above, then verify the engine brand, model, horsepower, stroke and serial-number range. Also confirm the fuel-line size and flow direction. Do not rely on horsepower alone.
What are signs that a fuel filter needs replacement?
Possible symptoms include hesitation, sputtering, loss of power, hard starting or stalling. A clear housing may also show sediment, discoloration or water contamination.
How often should the filter be replaced?
Replace the filter according to the engine manufacturer's maintenance schedule. Inspect it more frequently when operating in contaminated fuel, dusty conditions or other severe environments.
Can it be used with ethanol-blended fuel?
The supplied product information lists this filter for gasoline and commonly used E10 blends. Always follow the fuel recommendations for your engine and inspect the filter for deterioration during routine maintenance.
Is this an OEM part?
No. This is an aftermarket replacement filter. The reference numbers identify the applications it is intended to replace; they do not indicate that the product is manufactured by the original engine brand.
What are the shipping and warranty terms?
Shipping availability, delivery estimates, warranty coverage and return eligibility depend on the current order and store policies. Review the applicable policy information at checkout or contact customer support before ordering if these terms are important to your purchase.
Safety and Important Information
- Work in a well-ventilated area away from flames, sparks and other ignition sources.
- Wear suitable eye protection and handle spilled fuel according to local safety requirements.
- Verify the part number, hose size, flow direction and complete engine identification before installation.
- Do not operate the engine if fuel leaks are present.
- Professional installation is recommended if you are not familiar with marine fuel systems.
About Sea Sierra
- Marine replacement parts — Replacement components for routine outboard maintenance and repair.
- Application-focused listings — Use the supplied reference numbers and fitment information to help identify the correct part.
- Customer support — Contact support with your engine model, serial number and existing part number when fitment is uncertain.
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