HKS Blow Off Valve

Universal Fitment

Part #: 71008-AF013

Overview

The HKS SSQV4 Blow Off Valve is a high-performance aftermarket component designed for turbocharged vehicles, particularly suited for Subaru WRX STI models from 2008 to 2021. This advanced blow off valve features a unique sequential valve structure combined with a differential pressure control system, enabling it to operate efficiently across a wide range of boost levels. Its purpose is to provide a stable and responsive venting solution that enhances the overall turbo system performance while maintaining durability and aesthetic appeal. Crafted with a high-quality aluminum die-cast body, the SSQV4 not only performs reliably under demanding conditions but also adds a sleek, silver-coated finish to your engine bay, elevating its visual appeal. This product is ideal for enthusiasts seeking a reliable, durable, and visually striking blow off valve that supports high-performance turbo setups. It helps improve throttle response, reduces compressor surge, and provides a distinctive sound that complements the turbocharged experience. Whether upgrading for better response or aesthetic enhancement, the SSQV4 is designed to meet the demands of modern turbocharged engines.

Key Features

The HKS SSQV4 Blow Off Valve combines innovative design with practical functionality to support your vehicle’s turbo system. Key features include:

• Unique sequential valve structure for smooth venting
• Differential pressure control system for wide operating range
• Pull-Type relief design for stable operation under varying boost pressures
• High-quality aluminum die-cast body for durability and heat resistance
• Silver-coated finish for corrosion resistance and aesthetic appeal
• Supports a broad spectrum of turbocharged applications
• Designed for easy installation and reliable performance

Construction & Design

Constructed with a durable aluminum die-cast body, the SSQV4 features a precision-machined internal valve system that ensures consistent venting performance. The silver-coated exterior not only enhances its visual appeal but also provides resistance against corrosion and heat, making it suitable for high-stress engine environments. The compact, lightweight design allows for straightforward installation in a variety of turbo setups.

Driving Feel & Feedback

This blow off valve delivers a crisp, audible release that enhances the turbocharged driving experience. Its stable operation minimizes compressor surge and maintains consistent boost pressure, contributing to improved throttle response and driving confidence. The sound profile adds an engaging auditory element that enthusiasts appreciate.

Installation & Fitment

Installation involves replacing the factory blow off valve with the SSQV4 unit, typically requiring standard tools and basic mechanical knowledge. Fitment is designed to be straightforward for compatible turbocharged Subaru WRX STI models from 2008 to 2021, but verification against your vehicle’s specific setup is recommended.

What’s Included

The package includes the HKS SSQV4 Blow Off Valve unit, mounting hardware, and installation instructions, ensuring a complete upgrade for your turbo system.