Performance Blow off Valve Kit with Vacuum Port Adapter for 2008+ Yamaha SVHO SHO FZR FZS GP1800 Watercraft

Product Description

Upgrade Your Ride’s Supercharger Performance & Longevity

Unlock the full potential of your Yamaha watercraft with our Performance Blow-Off Valve Kit with Vacuum Port Adapter. Specifically engineered for 2008+ Yamaha SVHO, SHO, FZR, FZS, and GP1800 models, this kit is the simple, cost-effective solution to protect your supercharger while enhancing throttle response.

Key Features

✅ IMPROVES SUPERCHARGER RELIABILITY: Relieves unwanted pressure during off-throttle operation, significantly reducing supercharger clutch & gear wear and eliminating heat soak in the discharge tube.
✅ DIRECT BOLT-ON DESIGN: No drilling or modification required. Installs easily in place of the OEM elbow joint using the included high-strength silicone hose with integrated 35mm valve.
✅ HIGH-PERFORMANCE SQV VALVE: Includes a premium 35mm Super Sequential Blow-Off Valve featuring a unique sequential valve structure and differential pressure control system for a broad operating boost range.
✅ VACUUM PORT ADAPTER INCLUDED: Allows easy blow-off valve installation. Comes with (1) 1/8″ and (1) 1/4″ brass barbed fittings, plus 2 extra ports for additional boost/vacuum accessories and block-off fittings for unused ports.
✅ BROAD COMPATIBILITY: Fits Yamaha SVHO, SHO, FZR, FZS, and GP1800 models from 2008 to 2025 (see application list below). A cost-effective upgrade for stock or modified engines running the original intercooler.

Why Upgrade?

During sudden off-throttle conditions, pressure buildup can wreak havoc on your supercharger clutch, gears, and intake components. Our kit solves this by instantly venting unwanted boost, dramatically reducing component wear and preventing performance-robbing heat soak in the discharge tube.

Engineered for Performance

At the heart of this kit is a high-quality 35mm Super Sequential Blow-Off Valve (SQV) . Unlike basic valves, the SQV features a dual-stage sequential structure and a differential pressure control system, allowing it to operate flawlessly across a wide boost range—from low to high pressure.

Simple, Direct Installation

Forget complicated drilling or manifold modifications. This kit replaces the restrictive OEM elbow joint with a high-strength silicone hose that integrates the 35mm valve directly. The included Vacuum Port Adapter simplifies the plumbing, providing 1/8″ and 1/4″ brass barbed fittings, plus two extra ports for additional accessories like boost gauges. Unused ports are sealed with the included block-off fittings.

What’s in the Box:

High-strength silicone hose w/ integrated 35mm valve
• 35mm Super SQV Blow-Off Valve
• Vacuum Port Adapter
• 1/8″ & 1/4″ brass barbed fittings
• 2 extra ports & block-off fittings for unused ports
• All necessary vacuum lines and fittings for SVHO/SHO engines

Keep your supercharger running cooler, longer, and more reliably—on stock or modified engines.

Applications / Fitment Guide (2008–2025)

Fits the following Yamaha Watercraft models (1.8L SVHO/SHO engines):

2021-2025: FX Cruiser SVHO, FX Limited SVHO, FX SVHO, GP SVHO (GP1800R)
• 2017-2020: FX Cruiser SVHO, FX Limited SVHO, FX SVHO, GP1800
• 2013-2016: FX Cruiser SHO (1.8L), FX SHO (1.8L), FZR, FZS, FX SVHO (2015-16)
• 2008-2012: FX Cruiser SHO (1.8L), FX SHO (1.8L), FZR, FZS

(Full compatibility list available in product images – covers all years listed in your original spec)

Material: High-strength silicone hose with integrated 35mm valve
Installation: Direct bolt-on (no drilling/modification)
Includes: Vacuum port adapter & Super SQV blow-off valve
Condition: Aftermarket Performance Part

Add to cart today and experience the difference of a properly protected supercharger system!