What is the difference between this Dual Port BOV and a vent-to-atmosphere BOV?

The Dual Port design vents some compressed air back into the intake system for quieter operation during normal driving. It also vents some air to the atmosphere, which creates the audible 'pssh' sound when you release the throttle under boost.

What makes this BOV better than the stock one?

This Turbosmart unit is constructed from solid billet aluminum, making it much stronger and more reliable under higher boost pressures than the factory plastic valve. It also offers a more distinct sound and can improve throttle response.

Turbosmart BOV Kompact Dual Port - Honda Civic RS 1.5L/Honda Civic Type-R

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Specifications

Brand: Turbosmart
Part #: TS-0203-1017
UPC: 9329677017397

Turbosmart BOV Kompact Dual Port - Honda Civic RS 1.5L/Honda Civic Type-R

Name: Turbosmart BOV Kompact Dual Port - Honda Civic RS 1.5L/Honda Civic Type-R
Brand: Turbosmart
Price: 246.95 USD
Availability: InStock

$246.95

On Backorder — Expected to ship by Apr 9, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2017-2021 Honda Civic. Turbosmart Kompact Dual Port BOV replaces the factory unit for improved performance and sound.

Key Features

Fits 2017-2021 Honda Civic Type R and RS 1.5L.
Direct-fit replacement for the factory blow-off valve.
Dual Port design vents to atmosphere and recirculates air.
All billet CNC construction from aerospace-grade aluminum.
Features high-temperature seals for durability.
Provides improved performance and a distinct blow-off sound.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Fits this vehicle

Honda Civic 2017-2021

Product Details

If you're looking to get a bit more sound and responsiveness from your turbocharged Honda Civic Type R or RS 1.5L, this Turbosmart Kompact Dual Port Blow Off Valve is a solid option. It's designed as a direct replacement for the stock plastic valve, meaning it fits right in without needing any modifications to your existing plumbing.

This Kompact BOV is built from solid billet aerospace-grade aluminum, which is much stronger than the factory plastic part and can handle higher boost pressures without leaking. It features a Dual Port design that vents some air back into the intake for quieter operation during normal driving, and also vents some to the atmosphere, giving you that characteristic blow-off sound when you lift off the throttle. The high-temperature seals ensure it holds up under the heat of the engine bay.

Because this is a direct-fit upgrade, installation is pretty straightforward. Just remember that this part is not CARB approved and cannot be shipped to California.