HKS Blow Off Valve

Universal Fitment

Part #: 71008-AT021

Overview

The HKS SSQV4 Blow Off Valve is a high-performance aftermarket component designed for enthusiasts seeking to enhance their Toyota Supra A90 with the B58 engine. Engineered to improve the response and sound of your forced induction system, this blow-off valve offers a combination of durability, precise control, and an exhilarating auditory experience. Whether you're aiming for a more aggressive sound profile or seeking to support your vehicle’s performance upgrades, the SSQV4 is an ideal choice for those who demand quality and reliability in their turbocharged setup. This product is perfect for Supra owners and tuning enthusiasts who want to elevate their vehicle’s response and auditory feedback while maintaining a high level of build quality and performance support. The SSQV4 helps manage excess pressure efficiently, reducing compressor surge and protecting your turbocharger during shifts and deceleration, all while delivering a distinctive, sporty sound that enhances your driving experience.

Key Features

The HKS SSQV4 Blow Off Valve combines innovative design with proven performance features to ensure reliable operation and a satisfying sound. Key features include:

• High-quality aluminum construction for durability and heat resistance
• Adjustable spring preload for tuning response and sound characteristics
• Unique piston design for consistent venting and response
• Compact, lightweight profile for easy installation in tight engine bays
• Enhanced sound profile that delivers a sporty, audible boost release
• Designed specifically for turbocharged engines, supporting optimal pressure management
• Compatible with a wide range of aftermarket and stock turbo setups

Construction & Design

The SSQV4 features a precision-machined aluminum body with a durable anodized finish, ensuring longevity and resistance to heat and corrosion. Its piston and spring assembly are engineered for consistent venting performance, providing a reliable and responsive boost release. The compact design allows for straightforward installation in the engine bay, making it a practical upgrade for both street and track applications.

Driving Feel & Feedback

This blow-off valve enhances the auditory feedback during throttle lift, producing a distinctive, sporty sound that elevates the driving experience. It helps improve response by efficiently venting excess pressure, reducing turbo lag and compressor surge, and providing a more engaging and confident feel during spirited driving or tuning sessions.

Installation & Fitment

Installation involves replacing the stock or existing aftermarket blow-off valve with the SSQV4, typically requiring basic hand tools. Fitment should be verified against your specific vehicle setup, but the design is intended to be a direct bolt-on upgrade for the Toyota Supra A90 with B58 engine, supporting a seamless integration into your forced induction system.

What’s Included

The package includes the HKS SSQV4 Blow Off Valve, mounting hardware, and installation instructions to facilitate a straightforward upgrade process. Additional accessories or adapters are not typically required unless specified for custom applications.