Sierra 18-79953 VST Filter Kit for Yamaha Z150-Z300 and VZ150-VZ300 Outboard Engines

The Sierra 18-79953 VST Filter Kit is a direct-replacement fuel filter kit built for Yamaha 4-stroke outboard engines. It restores clean, consistent fuel delivery to the vapor separator tank (VST) system, protecting the engine from debris and contaminants that can clog injectors and foul carburetion. Sierra engineers this kit to match OEM fit and function, so installation is a straightforward swap without modification.

Sierra filters in this line are tested and approved for use with ethanol-blended fuels, addressing a common failure point in older filter designs that were not built to handle modern ethanol content. This makes the kit a reliable choice for boat owners running E10 or similar blends who want to avoid premature filter breakdown and the fuel system damage that can follow.

This kit is designed for Yamaha outboard models including the LZ150, Z150, LZ200, VZ150, Z200, LZ250, Z250, LZ300, Z300, VZ175, VZ200, VZ225, VZ250, VZ300, and Z175 engine families, with specific year ranges noted below. It is manufactured in the United States and backed by a limited warranty.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-79953
• Product Category: Yamaha Outboard Fuel Filter (VST Kit)
• Engine Type: 4 Stroke
• Fuel Type: Gasoline
• Mounting Type: Engine Mount
• Weight: 0.04 pounds
• Package Dimensions: 10 inches L x 12 inches H x 11 inches W
• UPC: 808282300951
• GTIN: 00808282300951
• Country of Origin: Made in United States
• Warranty: Limited warranty

Fitment

• Yamaha LZ150
• Yamaha Z150 (00-05)
• Yamaha LZ200
• Yamaha VZ150
• Yamaha Z200 (00-11)
• Yamaha LZ250
• Yamaha Z250 (03-05)
• Yamaha LZ300
• Yamaha Z300 (04-06)
• Yamaha VZ175 (01-11)
• Yamaha VZ200 (01-09)
• Yamaha VZ225
• Yamaha VZ250 (03-09)
• Yamaha VZ300 (04-09)
• Yamaha Z175 (01-05)

Frequently Asked Questions

What engines does the Sierra 18-79953 VST filter kit fit? The Sierra 18-79953 kit is designed for Yamaha outboard models including the LZ150, Z150 (00-05), LZ200, VZ150, Z200 (00-11), LZ250, Z250 (03-05), LZ300, Z300 (04-06), VZ175 (01-11), VZ200 (01-09), VZ225, VZ250 (03-09), VZ300 (04-09), and Z175 (01-05).

Is this a genuine OEM part or an aftermarket replacement? The 18-79953 is a Sierra-manufactured replacement filter kit built to match OEM fit and function for the listed Yamaha outboard models, rather than a part sourced directly from Yamaha.

How much does the 18-79953 filter kit weigh? This Sierra VST filter kit weighs 0.04 pounds.

Will this filter work with ethanol-blended gasoline? Yes, the Sierra 18-79953 VST filter kit is tested and approved for use with ethanol-based fuels, which helps prevent the fuel system breakdown that can occur with filters not rated for ethanol blends.

What type of engine is this fuel filter designed for? Part number 18-79953 is designed for 4-stroke Yamaha outboard engines running on gasoline.

How does the filter mount on the engine? The 18-79953 VST filter kit uses an engine-mount configuration, fitting into the vapor separator tank fuel system of the supported Yamaha outboards.

What is included with the Sierra 18-79953 kit? The kit includes the Yamaha VST filter components needed to replace the fuel filter in the vapor separator tank assembly on the applicable outboard models.

Does the 18-79953 kit come with a warranty? Yes, the Sierra 18-79953 VST filter kit is backed by a limited warranty.

Where is the Sierra 18-79953 filter kit made? The 18-79953 VST filter kit is made in the United States.

Why would I need to replace the VST filter on my Yamaha outboard? The VST filter in Yamaha outboards like the Z150, Z200, Z250, and Z300 families traps debris and contaminants before fuel reaches the injectors; a worn or clogged filter, part number 18-79953 for these models, should be replaced to maintain reliable fuel delivery.