HKS 71004-AF008 Racing Ssqv Sequential Blow Valve Bov EJ207

( Brand: Hks ), ( Manufacturer Part Number: 71004-AF008 ), ( Type: Blow Off Valve ), ( Fitment Type: Performance/custom ), ( Placement On Vehicle: Front )

Review HKS Racing Ssqv Sequential Blow Off Valve Bov fits EJ205

The HKS 71004-AF008 Racing SQV (Sequential Blow-Off Valve) is a must-have performance accessory for Subaru EJ205 and EJ207 engine models. This high-performance blow-off valve is designed to enhance the engine's response, maximize power output, and provide better control during aggressive driving.

The SQV valve utilizes a sequential operation, which means it opens progressively in a predetermined sequence, allowing for optimal boost pressure management. This results in a more linear power delivery and a more responsive driving experience.

The HKS Racing SQV is constructed from high-quality materials, including a machined aluminum housing and stainless steel components. These materials not only ensure durability and reliability but also contribute to the valve's sleek and stylish appearance.

The valve features a 44mm diameter intake port and a 32mm diameter exhaust port, which maximizes the airflow capacity for enhanced engine performance. The valve is also equipped with a blow-off pressure adjustment mechanism, allowing users to fine-tune the valve's operation to suit their specific engine setup and driving preferences.

The HKS Racing SQV also comes with a unique and innovative "V-configured" diaphragm design. This design helps to minimize the impact of pulsation waves generated during boost pressure surges, reducing the load on the engine and improving overall engine efficiency.

The installation process of the HKS Racing SQV is relatively straightforward and can be done with common hand tools. The valve also comes with all necessary hardware and instructions to make the process as smooth as possible.

In summary, the HKS 71004-AF008 Racing SQV is a top-performing blow-off valve that offers improved engine response, enhanced power output, and better control during aggressive driving. Its high-quality construction, sequential operation, and innovative design make it a valuable addition to any Subaru EJ205 or EJ207 engine setup.

The HKS 71004-AF008 Racing SQV (Sequential Blow-Off Valve) is a popular aftermarket upgrade for Subaru engines like the EJ205 and EJ207. This device is designed to improve the engine's performance and response by managing the blow-off gas produced during the engine's transition from overboost to normal boost conditions. Here are some pros and cons that can help you make an informed decision about purchasing this component.

1. Enhanced Engine Responsiveness: By efficiently managing the blow-off gas, the HKS SQV valve helps to reduce backpressure in the intake system, allowing the engine to respond more quickly and effectively.

2. Improved Throttle Response: The quicker response of the engine translates to improved throttle response, making your vehicle feel more lively and responsive.

3. Reduced Turbo Lag: The HKS SQV valve helps to minimize turbo lag by allowing the turbocharger to build boost pressure more efficiently, making your vehicle feel more responsive, especially during acceleration.

4. Enhanced Engine Sound: The HKS SQV valve produces a distinct sound when it opens and closes, which some enthusiasts find appealing and indicative of a well-tuned engine.

5. Durability: HKS is a well-respected manufacturer of high-performance automotive components, and their SQV valve is designed to withstand the rigors of high-performance driving.

1. Cost: The HKS SQV valve is a premium component, and its cost may be a deterrent for some buyers.

2. Complex Installation: Installing the HKS SQV valve may require professional assistance or advanced mechanical skills, as it involves modifying the intake system and wiring.

3. Potential for Check Engine Light: In some cases, installing a blow-off valve like the HKS SQV may trigger the check engine light, as the vehicle's onboard diagnostics system may not recognize the aftermarket component.

4. Noisy Operation: Some drivers may find the sound of the HKS SQV valve to be excessive or intrusive, particularly during normal driving conditions.

The HKS 71004-AF008 Racing SQV sequential blow-off valve is an excellent upgrade for Subaru EJ205 and EJ207 engines, offering enhanced engine responsiveness, improved throttle response, reduced turbo lag, and an appealing exhaust note. However, it comes with some drawbacks, including its cost, complex installation, potential check engine light triggering, and noise level. Ultimately, the decision to purchase the HKS SQV valve depends on your budget, mechanical skills, and priorities as a performance enthusiast. If you are willing to invest in a high-quality component that can significantly improve your engine's performance and response, the HKS SQV valve is an excellent choice. However, if you are on a tight budget or prefer a more discreet driving experience, you may want to consider alternative options.

If you decide to purchase the HKS 71004-AF008 Racing SQV sequential blow-off valve, make sure to have it installed by a professional mechanic or follow a reliable installation guide to ensure a proper and safe installation. Additionally, consider purchasing a high-quality aftermarket intake system to maximize the performance benefits of the HKS SQV valve. Lastly, be prepared for the potential for a check engine light and the distinctive exhaust note produced by the valve.

Details:

Comes from a non smoking home with small dog. This was on my car from 2008 to 2019. I had it on my EJ205. Since 2019 the bov has been in my garage box and now needs a new home.

I aim to ship same day when possible. I cleaned this up as best could. With the HKS brand reputation for quality and durability, this Sequential Blow Off Valve ensures better throttle response quicker turbocharger spool-up times, making it a popular choice among car enthusiasts looking to enhance their vehicles performance. I wish this was on my current car.

The HKS Racing SSQV Sequential Blow Off Valve BOV 71004-AF008 is a high-performance aftermarket accessory designed for the EJ205 / EJ207 engines. This product is a front-mounted blow off valve that custom fit for improved performance. I'm happy to answer questions and provide more photos. Worked perfectly when it was last on.

part #: 71004af008 prices

• $239.11-$281.97

specifications turbiparts:

• for models: Ej205
• brand: Hks
• mpn: 71004-af008
• type: Blow Off Valve
• fitment type: Performance/custom
• placement on vehicle: Front

returns turbiparts:

• policy: No Returns

offer turbiparts:

• availability: In Stock
• started: December 3, 2025
• sold: 0
• best offers: True
• options: Ship-to-home
• quantity: 1

seller turbiparts:

• rating: 97.1%
• city: Morrison, Colorado
• # reviews: 592

payments turbiparts:

• credit card: Mastercard
• wallet: Apple-pay
• other
• money order

shipping turbiparts:

• transit: 3-8 Days
• class: Standard
• type: Calculated
• carrier: USPS
• cost: $8.58
• service: USPS Ground Advantage

general turbiparts:

• condition: Used
• Air Fuel Delivery > Turbos, Superchargers Intercoolers > Turbos Parts

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