HKS Blow Off Valve

Part #: 71008-AH010

Overview

The HKS SSQV4 Blow Off Valve with Recirculation Kit is a high-performance aftermarket component designed for turbocharged vehicles. Specifically engineered for Honda Civic models from 2017 to 2021 with 1.5T engines, this blow-off valve enhances your vehicle’s response and sound while maintaining reliable operation across a wide range of boost levels. Its advanced sequential valve structure and differential pressure control system ensure smooth, stable venting of excess boost pressure, supporting both stock and heavily tuned setups. Whether you're looking to improve throttle response, reduce compressor surge, or achieve a more aggressive turbo sound, this BOV is an excellent upgrade for enthusiasts seeking durability and performance consistency. Designed with precision and quality materials, the SSQV4 features a pull-type relief design that adapts seamlessly to various boost pressures. Its robust construction ensures long-lasting performance under demanding conditions, making it suitable for daily driving, spirited street use, or track days. The included recirculation kit allows for quiet operation and compatibility with factory ECU systems, helping to maintain optimal driveability and emissions performance.

Key Features

The HKS SSQV4 Blow Off Valve is built to deliver consistent, reliable venting with a focus on durability and performance. Key features include:

• Sequential valve design for smooth venting across all boost levels
• Differential pressure control system for stable operation
• Pull-type relief mechanism for consistent response
• High-quality, durable materials for long-term reliability
• Recirculation kit included for quiet operation and factory compatibility
• Designed specifically for turbocharged Honda Civic 1.5T models (2017-2021)
• Supports a wide operating range from low to high boost pressures

Construction & Design

The SSQV4 features a precision-machined aluminum body with a durable, high-flow valve mechanism. Its compact, lightweight design ensures minimal interference with engine bay components while providing maximum venting efficiency. The recirculation port is engineered for seamless integration with factory intake systems, helping to preserve factory emissions and driveability.

Driving Feel & Feedback

This blow-off valve helps improve throttle response and reduces compressor surge, resulting in a more immediate and confident turbocharged driving experience. Its stable venting operation contributes to a smoother boost curve and a more refined engine sound, enhancing overall driving engagement.

Installation & Fitment

Installation involves replacing the factory blow-off valve with the HKS SSQV4 unit and connecting the included recirculation hose. Compatibility with Honda Civic 1.5T models from 2017 to 2021 makes it a straightforward upgrade for enthusiasts familiar with basic turbo system modifications. Proper fitment should be verified against vehicle specifications and part number.

What’s Included

The package includes the HKS SSQV4 Blow Off Valve, recirculation kit, and necessary hardware for installation. Additional clamps or tools are not typically required but should be prepared based on your specific vehicle setup.