Upgrade your Turbosmart Kompact BOV with this high-quality replacement spring, designed specifically for the Kompact Plumb Back, Dual Port, and Supersonic blow off valves. This spring suits applications with vacuum levels from -13 InHg (high vacuum) to -3 InHg (low vacuum). Manufactured from durable materials to ensure consistent performance and reliability under demanding conditions. Ideal for enthusiasts seeking precise boost control and optimal blow off valve operation. Ensure your BOV operates at peak efficiency by selecting the correct spring for your setup.