Key Features & Benefits – Sequential blow off valve SQV4 style silver
Sequential blow off valve SQV4 style silver, following the well-known HKS SQV4 design language. It is universal for turbocharged and supercharged builds where the final connection and mounting are custom.
The valve uses a dual-stage pull-type mechanism and a CNC-machined, anodized aluminum housing. The Triple Fin layout shapes the vent sound character, and the kit includes an O-ring, mounting hardware, plus a 2.5” adapter flange.
When is this useful?
It can be used to manage boost-system pressure spikes on throttle lift, especially with custom charge piping and bespoke mounting points. It fits projects where an SQV4-style sequential valve is required and the installation is tailored to the specific layout.
Technical specs
- Brand: EPMAN
- Operation: sequential, dual-stage pull-type mechanism
- Material: CNC-machined, anodized aluminum
- Design: Triple Fin
- Color: silver
- Included: O-ring, hardware, 2.5” adapter flange
- Marked dimensions: 30 mm, 55 mm, 36 mm, 45 mm
- Installation: modification required
Selection & installation tips
- Connection method: confirm whether your build needs a flanged or weld-on solution and match it to the adapter flange.
- Dimension check: measure pipe diameter, available height, and nearby clearances, then compare against the marked dimensions.
- Mounting clearance: check for interference with clamps, brackets, pipes, and surrounding components once positioned.
- Sealing: inspect the O-ring seating surface and assemble on clean, undamaged mating faces.
- Control line: route and seal the vacuum/control connection to avoid leaks.
Before installation, verify the connection style, packaging space, and your charge-pipe dimensions, then compare them with the specifications and the included parts.
