{"product_id":"auto-aluminum-atmospheric-valve-air-dump-valve-blow-off-valve-for-ford-focus-mk2-st-225-mk3-st-250","title":"Performance Aluminum Blow Off Valve For Ford Focus ST Mk2 Mk3","description":"\u003cdiv\u003e\n\u003cp\u003eThis billet aluminium blow off valve replaces the factory diaphragm unit on the Ford Focus ST Mk2 and Mk3 to deliver faster turbo recovery, consistent boost retention, and a distinct exhaust flare on throttle lift. The reinforced piston mechanism eliminates the premature wear common with OEM rubber seals, providing a longer lifespan under increased manifold pressure. When paired with supporting intake or ECU modifications, the valve’s serviceable internals allow you to swap preload springs to match your desired activation threshold, keeping boost spikes predictable and drivability smooth across low RPM cruising and aggressive wide-open throttle runs.\u003c\/p\u003e \u003ch3\u003ePerformance Benefits \u0026amp; Setup Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the included fast road tuning springs to set an earlier opening point that matches mild to moderate boost stages.\u003c\/li\u003e\n\u003cli\u003eWipe the flange mating surface clean and inspect the rubber seat before bolting the valve to prevent unmeasured air leaks that trigger fault codes.\u003c\/li\u003e\n\u003cli\u003eRun a post-installation dyno or log file to confirm fuel trims stabilize once the system adapts to the adjusted backpressure.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eMaterialexit:\u003c\/b\u003e Machined billet aluminium construction with corrosion-resistant finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e Piston-style atmospheric dump valve, direct OE replacement fitment\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCompatibility:\u003c\/b\u003e Ford Focus ST Mk2 (225 hp), Ford Focus ST Mk3 (250 hp)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMaintenance:\u003c\/b\u003e Fully serviceable internal components for routine cleaning or spring swaps\u003c\/li\u003e\n\u003c\/ul\u003e \u003cstrong\u003ePackage includes:\u003c\/strong\u003e 1 × aluminium blow off valve, 2 × fast road tuning springs, 1 × replacement O-ring seal\u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eInstallation Notice:\u003c\/strong\u003e Professional fitting is strongly recommended. This product is supplied without assembly manuals, and improper torque or cross-threading can compromise the vacuum seal. Always verify pipe alignment, double-check hose clamps, and conduct a leak test before normal operation.\u003cbr\u003e\n\u003cbr\u003e\nAll electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.\u003cbr\u003e\n\u003cbr\u003e\nTrusted automotive upgrades since 2002 at intercyprus.com — engineered to perform when you need it most.\u003c\/div\u003e","brand":"InterCyprus Trading Ltd","offers":[{"title":"Default Title","offer_id":55021366477142,"sku":"1005012874319266-Default Title","price":35.48,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0530\/0604\/1274\/files\/Sd825a5b45dc0487992fe8dd9c1389fa86.webp?v=1786994056","url":"https:\/\/www.intercyprus.com\/products\/auto-aluminum-atmospheric-valve-air-dump-valve-blow-off-valve-for-ford-focus-mk2-st-225-mk3-st-250","provider":"InterCyprus Trading Ltd","version":"1.0","type":"link"}