VST Fuel Filter for Yamaha 115–350 HP Outboards – Replaces Yamaha 63P-13915-00 and Sierra 18-79902
VST Fuel Filter for Yamaha 115–350 HP Outboards – Replaces Yamaha 63P-13915-00 and Sierra 18-79902 is backordered and will ship as soon as it is back in stock.
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VST Fuel Filter for Yamaha 115–350 HP Outboards – Replaces Yamaha 6...
VST Fuel Filter for Yamaha 115–350 HP Outboards – Replaces Yamaha 63P-13915-00 and Sierra 18-79902 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket Vapor Separator Tank (VST) fuel filter is designed for selected Yamaha 4-stroke outboard fuel systems. The company fitment data identifies coverage across Yamaha 115–350 HP applications, including selected F150, F225 Sport, F250, F250B, F300, and F350 V8 models. It is a single replacement filter, not a filter-and-gasket kit.
The filter replaces Yamaha reference 63P-13915-00 and is listed as aftermarket reference Sierra 18-79902. Sierra catalog information identifies 18-79902 as a VST filter associated with Yamaha 63P-13915-00-00 applications.
- VST fuel-system filter for selected Yamaha outboards
- Direct replacement for the applicable original filter
- Aftermarket replacement; not manufactured by Yamaha or Sierra
- One filter supplied
Part Number References
Use the references below to compare the filter with the part being replaced. Part-number references do not replace verification of the exact engine model, year, and serial-number range.
| Brand or source | Reference | Relationship |
|---|---|---|
| Yamaha | 63P-13915-00 | Original-equipment reference listed by the company |
| Yamaha | 63P-13915-00-00 | Catalog-formatted reference associated with the same filter family |
| Sierra | 18-79902 | Aftermarket VST filter reference |
Engine Compatibility
The company fitment record lists selected Yamaha outboards from 115 to 350 HP, including the applications below. Always compare the complete model designation and serial-number information before ordering.
| Brand | Model family or application | Rated HP | Stroke | Fitment note |
|---|---|---|---|---|
| Yamaha | F150 | 150 | 4-Stroke | Selected F150 applications, including F150TXR |
| Yamaha | F225 Sport | 225 | 4-Stroke | Selected F225 Sport applications |
| Yamaha | F250 / F250B | 250 | 4-Stroke | Selected F250 and F250B applications |
| Yamaha | F300 | 300 | 4-Stroke | Selected F300 applications |
| Yamaha | F350 V8 | 350 | 4-Stroke | Selected F350 V8 applications |
| Yamaha | LF250 | 250 | 4-Stroke | Selected LF250 applications, including LF250TXR |
| Yamaha | Other listed applications | 115–350 | 4-Stroke | Verify the exact model before purchase; the company record does not provide a complete year or serial-number range |
Technical Specifications
- Product type
- Vapor Separator Tank (VST) fuel filter
- Application
- Selected Yamaha outboard fuel systems
- Rated engine range
- 115–350 HP, subject to the exact model and application
- Engine type
- 4-stroke outboards
- Installation
- Replacement filter for the applicable original component
- Product status
- Aftermarket replacement, not OEM
What’s in the Box
- 1 x VST fuel filter
Important: This listing does not include a float-chamber gasket or other VST service components unless separately stated. Confirm the gasket and service parts required for your engine before beginning installation.
Installation Notes
- Disconnect the negative battery cable and work in a well-ventilated area away from ignition sources.
- Relieve fuel-system pressure according to the engine service manual and contain any fuel that may be released.
- Locate the VST and remove the cover or access components as specified for your engine.
- Remove the existing filter, noting its orientation and the condition of the surrounding seals.
- Install the replacement filter in the same orientation as the original component.
- Replace any damaged or required gaskets separately; no gasket is included with this single-filter listing.
- Reassemble the VST, reconnect fuel lines and electrical connections, and tighten fasteners according to the service manual.
- Prime the fuel system and inspect carefully for leaks before operating the engine.
Because VST access and service procedures vary by engine, use the Yamaha service information for your exact model. Professional installation is recommended when fuel-system work is unfamiliar.
Troubleshooting & FAQ
What does this product replace?
The company lists Yamaha reference 63P-13915-00. Sierra catalog information identifies Sierra 18-79902 as a VST filter associated with Yamaha 63P-13915-00-00 applications.
Is this a complete VST service kit?
No. This is one replacement VST fuel filter. A float-chamber gasket and other service parts are not included.
Will it fit every Yamaha engine from 115 to 350 HP?
No. The 115–350 HP range is a general range from the company fitment record, not a guarantee for every engine in that range. Verify the exact model, year, and serial-number range before ordering.
Is this an OEM Yamaha part?
No. This is an aftermarket replacement filter intended for the listed applications. Yamaha and Sierra names and part numbers are used only to identify reference applications.
Can I clean and reuse the old filter?
A used filter should be replaced rather than relied on after cleaning. Follow the maintenance procedure for the exact engine and dispose of fuel-contaminated parts responsibly.
Safety & Important Information
- Confirm the complete engine model and serial-number information before purchase.
- Compare the original filter, connections, and installation orientation with the replacement before fitting it.
- Relieve fuel pressure and prevent spills during service.
- Do not operate the engine if fuel leaks are present.
- This is an aftermarket replacement and is not supplied by Yamaha or Sierra.
About Sea Sierra
- Marine Replacement Parts — We supply replacement components for boat and outboard maintenance.
- Application-Focused Listings — Product references and fitment information are provided to help match the correct service part.
- Support for Maintenance — Verify the exact engine application and service requirements before installation.
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